+=== release 1.17.1 ===
+
+2020-06-19 19:24:14 +0100 Tim-Philipp Müller <tim@centricular.com>
+
+ * ChangeLog:
+ * NEWS:
+ * RELEASE:
+ * gst-libav.doap:
+ * meson.build:
+ Release 1.17.1
+
+2020-06-09 15:33:51 -0400 Thibault Saunier <tsaunier@igalia.com>
+
+ * docs/gst_plugins_cache.json:
+ docs: Update plugins cache
+
+2020-06-08 09:44:43 -0400 Thibault Saunier <tsaunier@igalia.com>
+
+ * docs/gst_plugins_cache.json:
+ docs: Update plugins cache
+
+2020-06-06 00:43:02 +0200 Mathieu Duponchelle <mathieu@centricular.com>
+
+ * ext/libav/gstavcfg.c:
+ * ext/libav/gstavdeinterlace.c:
+ * ext/libav/gstavviddec.c:
+ * ext/libav/gstavvidenc.c:
+ plugins: uddate gst_type_mark_as_plugin_api() calls
+
+2020-06-03 18:35:32 -0400 Thibault Saunier <tsaunier@igalia.com>
+
+ * docs/meson.build:
+ doc: Require hotdoc >= 0.11.0
+
+2020-05-27 16:02:45 +0300 Sebastian Dröge <sebastian@centricular.com>
+
+ * docs/gst_plugins_cache.json:
+ docs: Update gst_plugins_cache.json
+
+2020-05-31 10:02:12 +0300 Sebastian Dröge <sebastian@centricular.com>
+
+ * ext/libav/gstavcfg.c:
+ * ext/libav/gstavdeinterlace.c:
+ * ext/libav/gstavviddec.c:
+ * ext/libav/gstavvidenc.c:
+ plugins: Use gst_type_mark_as_plugin_api() for all non-element plugin types
+
+2020-05-31 09:59:29 +0300 Sebastian Dröge <sebastian@centricular.com>
+
+ * ext/libav/gstavaudenc.c:
+ * ext/libav/gstavcodecmap.c:
+ * ext/libav/gstavcodecmap.h:
+ avcodecmap: Remove unused GstFFMpegCompliance type
+
+2020-05-27 16:30:41 +0200 Mathieu Duponchelle <mathieu@centricular.com>
+
+ * ext/libav/gstavdemux.c:
+ avdemux: update the context we use to determine stream's caps
+ The discovered frame rate is only available on the AVStream
+ itself. Updating the temporary context framerate before
+ building caps from it seems like a pretty non-intrusive approach.
+ Fixes #75
+ Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-libav/-/merge_requests/74>
+
+2020-05-27 16:29:27 +0200 Mathieu Duponchelle <mathieu@centricular.com>
+
+ * ext/libav/gstavcodecmap.c:
+ avcodecmap: use framerate instead of time_base when decoding
+ Documentation for AVCodecContext::time_base:
+ > decoding: the use of this field for decoding is deprecated.
+ > Use framerate instead.
+ Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-libav/-/merge_requests/74>
+
+2020-05-09 15:20:00 +0200 Matej Knopp <matej.knopp@gmail.com>
+
+ * ext/libav/gstavaudenc.h:
+ * ext/libav/gstavcodecmap.h:
+ * ext/libav/gstavviddec.h:
+ gstlibav: minor fixes for header files
+ Move G_BEGIN_DECLS below includes and add missing include
+ Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-libav/-/merge_requests/71>
+
+2020-05-08 19:16:41 +0200 Matej Knopp <matej.knopp@gmail.com>
+
+ * ext/libav/gstavviddec.c:
+ gstavviddec: only set range when actually reported by avcodec
+ otherwise we get incomplete colorimetry that video-info complains about
+ Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-libav/-/merge_requests/70>
+
+2020-04-30 18:12:19 +0530 Nirbheek Chauhan <nirbheek@centricular.com>
+
+ * README:
+ * README.md:
+ README: Convert to markdown, clarify licensing
+ Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-libav/-/merge_requests/68>
+
+2020-04-30 17:13:00 +0530 Nirbheek Chauhan <nirbheek@centricular.com>
+
+ * COPYING:
+ * COPYING.LIB:
+ All code in this repository is now LGPL-2.1+
+ Starting with 1.17, we will not ship a copy of FFmpeg in our release
+ tarballs, and all the remaining code is LGPL2.
+ Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-libav/-/merge_requests/68>
+
+2020-04-15 15:00:02 +0800 Haihao Xiang <haihao.xiang@intel.com>
+
+ * ext/libav/gstavmux.c:
+ avmux: avoid to use unintialized variable
+ Without this fix, running the command below will get an error randomly.
+ Example:
+ gst-launch-1.0 videotestsrc ! vp9enc ! avmux_ivf ! fakesink
+ ERROR: pipeline doesn't want to preroll.
+ 0:00:02.388528491 30148 0x5601b424a370 ERROR libav :0::
+ Tag [1]V[0][0] incompatible with output codec id '167' (VP90)
+
+2020-03-11 18:26:39 +0900 Seungha Yang <seungha@centricular.com>
+
+ * ext/libav/gstavviddec.c:
+ avviddec: Update for video-hdr struct change
+ See the change of -base https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/merge_requests/594
+
+2020-01-27 14:21:48 -0800 Julien Isorce <jisorce@oblong.com>
+
+ * ext/libav/gstavvidenc.c:
+ avvidenc: handle GST_VIDEO_MULTIVIEW_MODE_MONO
+ Otherwise videotestsrc ! avenc_libx265 ! fakesink
+ outputs `Unsupported multiview mode - no mapping in libav`
+
+2020-01-24 16:14:28 +0200 Sebastian Dröge <sebastian@centricular.com>
+
+ * ext/libav/gstavcodecmap.c:
+ avcodecmap: Add some more comments about the assumptions in the ffmpeg code about H264/H265/AAC
+
+2020-01-24 13:04:46 +0200 Sebastian Dröge <sebastian@centricular.com>
+
+ * ext/libav/gstavcodecmap.c:
+ avdemux: Only set stream-format for H264/H265/AAC when we have a context
+ Otherwise we don't know yet whether we'll have extradata/codec_data, so
+ can't decide on the stream-format yet.
+
+2020-01-15 14:36:19 +0800 Haihao Xiang <haihao.xiang@intel.com>
+
+ * ext/libav/gstavcodecmap.c:
+ avivf_mux: support VP9 and AV1
+ Besides vp8, ff_ivf_muxer supports VP9 and AV1
+
+2020-01-23 10:03:40 +0200 Sebastian Dröge <sebastian@centricular.com>
+
+ * ext/libav/gstavcodecmap.c:
+ avcodecmap: Set AAC/H264/H265 stream-format for demuxer/encoder situations if no codec_data is provided
+ This fixes output of the above formats from demuxers.
+
+2020-01-23 09:45:59 +0200 Sebastian Dröge <sebastian@centricular.com>
+
+ * ext/libav/gstavdemux.c:
+ avdemux: Pass the URI from the URI query to avformat_open_input()
+ Some demuxers make use of it in various ways, for example the HLS
+ demuxer.
+
+2019-12-19 17:58:56 +0100 Alicia Boya García <ntrrgc@gmail.com>
+
+ * ext/libav/gstavviddec.c:
+ gstavviddec: Limit default number of decoder threads
+ When the `max-threads` property is not specified, GStreamer defaults to
+ the amount of CPU threads in the system.
+ The number of threads used in avdec has a direct impact on the latency
+ of the decoder, which is of as many frames as threads. Therefore, big
+ numbers of threads can make latency levels that can be problematic in
+ some applications.
+ For this reason, ffmpeg emits a warning when more than 16 threads are
+ requested.
+ This patch limits the default number of threads to 16. This affects only
+ computers with more than 16 CPU threads when using avviddec without
+ setting `max-threads`.
+
+2019-12-02 19:06:04 +0000 Tim-Philipp Müller <tim@centricular.com>
+
+ * pkgconfig/gstreamer-plugins-libav-uninstalled.pc.in:
+ pkgconfig: remove unused file
+ Was never hooked up to meson build it seems, and only ever used
+ by the uninstalled autotools dev env to locate gst-libav plugins
+ for use in unit tests in other modules.
+
+2019-11-29 09:25:24 +0100 Edward Hervey <edward@centricular.com>
+
+ * ext/libav/gstavvidenc.c:
+ avvidenc: Fix error propagation
+ Instead of returning the default return value (GST_FLOW_OK), actually
+ return an error one (res vs ret).
+
+2019-11-04 15:39:59 +0100 Kevin JOLY <kevin.joly@heig-vd.ch>
+
+ * ext/libav/gstavdemux.c:
+ avdemux: Fix segmentation fault if long_name is NULL
+ Some plugins (like libcdio) registers empty long_name field. Calling strncmp on this field leads to a segmentation fault.
+ Signed-off-by: Kevin Joly <joly.kevin25@gmail.com>
+
+2019-10-29 11:43:05 +0900 Seungha Yang <seungha.yang@navercorp.com>
+
+ * ext/libav/gstavviddec.c:
+ avviddec: Fix huge leak caused by circular reference
+ AVBufferRef -> GstFFMpegVideoDecVideoFrame -> GstVideoCodecFrame -> AVBufferRef
+ Instead of holding additional ref there, set read-only which would not be
+ reused by ff_reget_buffer()
+ Fixes: https://gitlab.freedesktop.org/gstreamer/gst-libav/issues/63
+
+2019-10-25 01:09:08 +0900 Seungha Yang <seungha.yang@navercorp.com>
+
+ * ext/libav/gstavviddec.c:
+ * ext/libav/gstavvidenc.c:
+ avvideenc,avvidedec: Filtering hardware en/decoder by flag
+ ... instead of filtering them by hardcoded string compare.
+
+2019-10-24 00:25:28 +0900 Seungha Yang <seungha.yang@navercorp.com>
+
+ * ext/libav/gstavviddec.c:
+ avviddec: Enforce allocate new AVFrame per input frame
+ ... if ffmpeg would reuse the allocated AVBuffer. Reused AVFrame by
+ the ffmpeg seems to break our decoding flow since the reused AVFrame
+ holds the initial opaque data (GstVideoCodecFrame in this case), so
+ we couldn't trace the our in/out frames.
+ To enforce get_buffer() call per output frame, hold another reference
+ to the AVBuffer in order to mark the AVBuffer as not writable.
+ Fixes: https://gitlab.freedesktop.org/gstreamer/gst-libav/issues/62
+
+2019-10-13 14:33:27 +0100 Tim-Philipp Müller <tim@centricular.com>
+
+ * .gitignore:
+ * .gitmodules:
+ * HACKING:
+ * Makefile.am:
+ * README:
+ * TODO:
+ * autogen.sh:
+ * common:
+ * configure.ac:
+ * docs/.gitignore:
+ * ext/Makefile.am:
+ * ext/libav/Makefile.am:
+ * gst-libs/Makefile.am:
+ * gst-libs/ext/Makefile.am:
+ * gst-libs/ext/gas-preprocessor:
+ * gst-libs/ext/libav:
+ * m4/as-slurp-ffmpeg.m4:
+ * pkgconfig/.gitignore:
+ * pkgconfig/Makefile.am:
+ * tests/Makefile.am:
+ * tests/check/.gitignore:
+ * tests/check/Makefile.am:
+ * tests/check/generic/.gitignore:
+ * tests/files/Makefile.am:
+ Remove autotools build system
+
+2019-09-24 23:51:33 +0900 Seungha Yang <seungha.yang@navercorp.com>
+
+ * ext/libav/gstavcodecmap.c:
+ * ext/libav/gstavviddec.c:
+ avviddec,avcodemap: Use new helper function for map color space information
+ ... between GStreamer and FFmpeg. Note that FFmpeg follows ISO/IEC 23001-8
+ defined color{matrix,transfer,primaries} values.
+
+2019-09-11 15:59:42 +0000 Marc Leeman <marc.leeman@gmail.com>
+
+ * docs/meson.build:
+ docs: do not require gst-plugins-doc-cache-generator
+ Do not require the cache generator. This is in line with the other
+ gstreamer modules
+
+2019-08-13 22:03:31 +0200 Mathieu Duponchelle <mathieu@centricular.com>
+
+ * ext/libav/gstavvidenc.c:
+ avvidenc: timestamp output buffers
+ Same approach as x264enc, with the one hour offset
+
+2019-08-01 16:27:35 -0400 Doug Nazar <nazard@nazar.ca>
+
+ * ext/libav/gstavauddec.c:
+ avauddec: Don't warn if drain is successful
+
+2019-07-18 00:20:16 +0200 Mathieu Duponchelle <mathieu@centricular.com>
+
+ * ext/libav/gstavviddec.c:
+ avviddec: improve latency calculation
+ When thread_type is set to FF_THREAD_FRAME, per the documentation
+ a latency of one frame per thread is introduced:
+ <https://ffmpeg.org/ffmpeg-codecs.html>, search for thread_type.
+ Additionally, we need in that case to calculate the automatic
+ number of threads ourselves, so as to accurately calculate the
+ latency.
+
+2018-10-06 18:51:58 +0900 Seungha Yang <seungha.yang@navercorp.com>
+
+ * ext/libav/gstavviddec.c:
+ * ext/libav/gstavviddec.h:
+ avviddec: Add thread-type property
+ The thread-type property allows specifying preferred
+ multithreading methods by user. Note that FF_THREAD_FRAME
+ may introduce additional latency especially on non-filesrc usecase,
+ since it introduces a decoding delay of (number of threads) frames.
+ https://bugzilla.gnome.org/show_bug.cgi?id=797254
+
+2019-07-15 10:42:42 +0300 Sebastian Dröge <sebastian@centricular.com>
+
+ * ext/libav/gstavvidenc.c:
+ avvidenc: Close reference context before freeing it
+ Otherwise we'll leak some memory.
+ See https://gitlab.freedesktop.org/gstreamer/gst-libav/merge_requests/32
+
+2019-07-12 14:41:18 +0200 Knut Andre Tidemann <knutandre.tidemann@zenitel.com>
+
+ * ext/libav/gstavaudenc.c:
+ avaudenc: fix memory leak of refcontext after finalize.
+
+2019-06-19 15:44:49 +0300 Sebastian Dröge <sebastian@centricular.com>
+
+ * ext/libav/gstavvidenc.c:
+ avvidenc: Also set the repeat_pict flag correctly and take the TFF flag from caps if available
+
+2019-06-19 15:43:42 +0300 Sebastian Dröge <sebastian@centricular.com>
+
+ * ext/libav/gstavvidenc.c:
+ avvidenc: Correctly signal interlaced input to ffmpeg when the input caps are interlaced
+ Regression from 1e4529ced2dadbfed4ac10d639a45dbcb0660129
+
+2019-06-02 21:45:19 +0200 Niels De Graef <niels.degraef@barco.com>
+
+ * configure.ac:
+ meson: Bump minimal GLib version to 2.44
+ This means we can use some newer features and get rid of some
+ boilerplate code using the G_DECLARE_* macros.
+ As discussed on IRC, 2.44 is old enough by now to start depending on it.
+
+2019-05-29 11:49:38 +0530 Guillaume Desmottes <guillaume.desmottes@collabora.com>
+
+ * ext/libav/gstavviddec.c:
+ avviddec: remove cdgraphics element
+ It was never usable as we don't have a parser and we now have 'cdgdec'
+ in gst-plugins-rs.
+
+2019-05-25 13:36:40 +0200 Tim-Philipp Müller <tim@centricular.com>
+
+ * configure.ac:
+ configure: pass -Wno-attributes to fix build against broken ffmpeg headers
+ libavutil/mem.h:342:1: error: ‘alloc_size’ attribute ignored on a function returning ‘int’
+ av_alloc_size(2, 3) int av_reallocp_array(void *ptr, size_t nmemb, size_t size);
+ ^~~~~~~~~~~~~
+ Hopefully fixes build on jenkins.
+
+2019-05-24 20:35:41 +0900 Seungha Yang <seungha.yang@navercorp.com>
+
+ * ext/libav/gstavcodecmap.c:
+ * ext/libav/gstavviddec.c:
+ avcodecmap,avviddec: Map bt2020-10, PQ and HLG transfer functions
+ Map more transfer functions between Gstreamer and ffmpeg
+
+2019-05-24 11:47:58 +0200 Arun Raghavan <arun@arunraghavan.net>
+
+ * docs/gst_plugins_cache.json:
+ * ext/libav/gstavcodecmap.c:
+ codecmap: Add caps for aptX and aptX-HD
+
+2019-05-16 09:20:56 -0400 Thibault Saunier <tsaunier@igalia.com>
+
+ * docs/gst_plugins_cache.json:
+ * docs/meson.build:
+ docs: Stop building the doc cache by default
+ Fixes https://gitlab.freedesktop.org/gstreamer/gst-docs/issues/36
+
+2019-05-13 22:58:09 -0400 Thibault Saunier <tsaunier@igalia.com>
+
+ * docs/gst_plugins_cache.json:
+ docs: Update plugins documentation cache
+
+2018-10-22 11:41:07 +0200 Thibault Saunier <tsaunier@igalia.com>
+
+ * Makefile.am:
+ * configure.ac:
+ * docs/Makefile.am:
+ * docs/gst_plugins_cache.json:
+ * docs/index.md:
+ * docs/meson.build:
+ * docs/plugins/.gitignore:
+ * docs/plugins/Makefile.am:
+ * docs/plugins/gst-libav-plugins-docs.sgml:
+ * docs/plugins/gst-libav-plugins.args:
+ * docs/plugins/gst-libav-plugins.hierarchy:
+ * docs/plugins/gst-libav-plugins.interfaces:
+ * docs/plugins/gst-libav-plugins.prerequisites:
+ * docs/plugins/gst-libav-plugins.signals:
+ * docs/plugins/gst-libav-plugins.types:
+ * docs/plugins/inspect/plugin-libav.xml:
+ * docs/plugins/scanobj-build.stamp:
+ * docs/sitemap.txt:
+ * docs/version.entities.in:
+ * ext/libav/meson.build:
+ * meson.build:
+ * meson_options.txt:
+ docs: Port to hotdoc
+
+2019-05-05 09:38:01 +0200 Christoph Reiter <reiter.christoph@gmail.com>
+
+ * configure.ac:
+ autotools: add bcrypt to win32 libs
+ The included libav requires it now. Otherwise the builds fails with:
+ CCLD libgstlibav.la
+ build-i686-w64-mingw32/gst-libs/ext/.libs/libavutil.a(random_seed.o): In function `av_get_random_seed':
+ gst-libav-1.16.0/gst-libs/ext/libav/libavutil/random_seed.c:126: undefined reference to `BCryptOpenAlgorithmProvider@16'
+ gst-libav-1.16.0/gst-libs/ext/libav/libavutil/random_seed.c:129: undefined reference to `BCryptGenRandom@16'
+ gst-libav-1.16.0/gst-libs/ext/libav/libavutil/random_seed.c:130: undefined reference to `BCryptCloseAlgorithmProvider@8'
+ collect2.exe: error: ld returned 1 exit status
+
+2019-02-18 20:53:58 +0900 Seungha Yang <seungha.yang@navercorp.com>
+
+ * ext/libav/gstavviddec.c:
+ avviddec: Extract HDR information if any
+ Convert mastering display information (a.k.a HDR static metadata) and
+ content light level information provided by FFMPEG to Gstreamer.
+
+2019-04-29 11:52:31 +0900 Yeongjin Jeong <yeongjin.jeong@navercorp.com>
+
+ * ext/libav/gstav.c:
+ gstav: Use libavcodec util function for version check
+ The version of libavutil is printed in the log instead of libavcodec
+ because avutil_version() returns LIBAVUTIL_VERSION_INT. This can be confusing,
+ so we should be replace it with avcodec_version().
+
+2019-04-29 15:22:52 +0900 Yeongjin Jeong <yeongjin.jeong@navercorp.com>
+
+ * ext/libav/gstavauddec.c:
+ avauddec: Ensure drain even if codec has not delay capabilities
+ There are decoders that need to be drained if they work on multi-threads,
+ even if AV_CODEC_CAP_DELAY is not set.
+
+2019-04-29 15:02:06 +0900 Yeongjin Jeong <yeongjin.jeong@navercorp.com>
+
+ * ext/libav/gstavviddec.c:
+ avviddec: Ensure drain even if codec has not delay capabilities
+ There are decoders that need to be drained if they work on multi-threads,
+ even if AV_CODEC_CAP_DELAY is not set.
+
+2019-04-19 10:38:06 +0100 Tim-Philipp Müller <tim@centricular.com>
+
+ * RELEASE:
+ * configure.ac:
+ * docs/plugins/inspect/plugin-libav.xml:
+ * meson.build:
+ Back to development
+
=== release 1.16.0 ===
2019-04-19 00:33:22 +0100 Tim-Philipp Müller <tim@centricular.com>
Original commit message from CVS:
ChangeLog surgery: UTF8-ize latest entry
-2007-11-08 14:44:36 +0000 Ole Andr
é Vadla Ravnås <ole.andre.ravnas@tandberg.com>
+2007-11-08 14:44:36 +0000 Ole Andr
� Vadla Ravn�s <ole.andre.ravnas@tandberg.com>
ext/ffmpeg/:
Original commit message from CVS:
- Patch by: Ole Andr
é Vadla Ravnås <ole dot andre dot ravnas at tandberg dot com>
+ Patch by: Ole Andr
� Vadla Ravn�s <ole dot andre dot ravnas at tandberg dot com>
* ext/ffmpeg/gstffmpegcodecmap.c: (gst_ffmpeg_caps_with_codecid):
* ext/ffmpeg/gstffmpegmux.c: (gst_ffmpegmux_init):
-GSTREAMER 1.16 RELEASE NOTES
+GSTREAMER 1.18 RELEASE NOTES
-GStreamer 1.16.0 was originally released on 19 April 2019.
+THESE RELEASE NOTES ARE A PLACEHOLDER, PLEASE BEAR WITH US WHILE WE
+FINISH WRITING UP THE REAL THING.
-See https://gstreamer.freedesktop.org/releases/1.16/ for the latest
+GStreamer 1.18.0 has not yet been released. It is scheduled for release
+in summer 2020 now.
+
+1.17.x is the unstable development series that is currently being
+developed in the git master branch and which will eventually result in
+1.18, and 1.17.1 is the current development release in that series.
+
+The schedule for the 1.18 development cycle is yet to be confirmed, but
+it is expected that feature freeze will be in June/July 2020, followed
+by several 1.17 pre-releases and then a new 1.18 stable release in
+July/August 2020.
+
+1.18 will be backwards-compatible to the stable 1.16, 1.14, 1.12, 1.10,
+1.8, 1.6, 1.4, 1.2 and 1.0 release series.
+
+See https://gstreamer.freedesktop.org/releases/1.18/ for the latest
version of this document.
-_Last updated: Friday 19 April 2019, 00:00 UTC (log)_
+_Last updated: Thursday 18 June 2020, 16:00 UTC (log)_
Introduction
Highlights
-- GStreamer WebRTC stack gained support for data channels for
- peer-to-peer communication based on SCTP, BUNDLE support, as well as
- support for multiple TURN servers.
-
-- AV1 video codec support for Matroska and QuickTime/MP4 containers
- and more configuration options and supported input formats for the
- AOMedia AV1 encoder
-
-- Support for Closed Captions and other Ancillary Data in video
-
-- Support for planar (non-interleaved) raw audio
-
-- GstVideoAggregator, compositor and OpenGL mixer elements are now in
- -base
-
-- New alternate fields interlace mode where each buffer carries a
- single field
-
-- WebM and Matroska ContentEncryption support in the Matroska demuxer
-
-- new WebKit WPE-based web browser source element
-
-- Video4Linux: HEVC encoding and decoding, JPEG encoding, and improved
- dmabuf import/export
-
-- Hardware-accelerated Nvidia video decoder gained support for VP8/VP9
- decoding, whilst the encoder gained support for H.265/HEVC encoding.
-
-- Many improvements to the Intel Media SDK based hardware-accelerated
- video decoder and encoder plugin (msdk): dmabuf import/export for
- zero-copy integration with other components; VP9 decoding; 10-bit
- HEVC encoding; video post-processing (vpp) support including
- deinterlacing; and the video decoder now handles dynamic resolution
- changes.
-
-- The ASS/SSA subtitle overlay renderer can now handle multiple
- subtitles that overlap in time and will show them on screen
- simultaneously
-
-- The Meson build is now feature-complete (*) and it is now the
- recommended build system on all platforms. The Autotools build is
- scheduled to be removed in the next cycle.
-
-- The GStreamer Rust bindings and Rust plugins module are now
- officially part of upstream GStreamer.
-
-- The GStreamer Editing Services gained a gesdemux element that allows
- directly playing back serialized edit list with playbin or
- (uri)decodebin
-
-- Many performance improvements
+- FIXME
Major new features and changes
Noteworthy new API
-- GstAggregator has a new "min-upstream-latency" property that forces
- a minimum aggregate latency for the input branches of an aggregator.
- This is useful for dynamic pipelines where branches with a higher
- latency might be added later after the pipeline is already up and
- running and where a change in the latency would be disruptive. This
- only applies to the case where at least one of the input branches is
- live though, it won’t force the aggregator into live mode in the
- absence of any live inputs.
-
-- GstBaseSink gained a "processing-deadline" property and
- setter/getter API to configure a processing deadline for live
- pipelines. The processing deadline is the acceptable amount of time
- to process the media in a live pipeline before it reaches the sink.
- This is on top of the systemic latency that is normally reported by
- the latency query. This defaults to 20ms and should make pipelines
- such as v4l2src ! xvimagesink not claim that all frames are late in
- the QoS events. Ideally, this should replace the "max-lateness"
- property for most applications.
-
-- RTCP Extended Reports (XR) parsing according to RFC 3611:
- Loss/Duplicate RLE, Packet Receipt Times, Receiver Reference Time,
- Delay since the last Receiver (DLRR), Statistics Summary, and VoIP
- Metrics reports. This only provides the ability to parse such
- packets, generation of XR packets is not supported yet and XR
- packets are not automatically parsed by rtpbin / rtpsession but must
- be actively handled by the application.
-
-- a new mode for interlaced video was added where each buffer carries
- a single field of interlaced video, with buffer flags indicating
- whether the field is the top field or bottom field. Top and bottom
- fields are expected to alternate in this mode. Caps for this
- interlace mode must also carry a format:Interlaced caps feature to
- ensure backwards compatibility.
-
-- The video library has gained support for three new raw pixel
- formats:
-
- - Y410: packed 4:4:4 YUV, 10 bits per channel
- - Y210: packed 4:2:2 YUV, 10 bits per channel
- - NV12_10LE40: fully-packed 10-bit variant of NV12_10LE32,
- i.e. without the padding bits
-
-- GstRTPSourceMeta is a new meta that can be used to transport
- information about the origin of depayloaded or decoded RTP buffers,
- e.g. when mixing audio from multiple sources into a single stream. A
- new "source-info" property on the RTP depayloader base class
- determines whether depayloaders should put this meta on outgoing
- buffers. Similarly, the same property on RTP payloaders determines
- whether they should use the information from this meta to construct
- the CSRCs list on outgoing RTP buffers.
-
-- gst_sdp_message_from_text() is a convenience constructor to parse
- SDPs from a string which is particularly useful for language
- bindings.
-
-Support for Planar (Non-Interleaved) Raw Audio
-
-Raw audio samples are usually passed around in interleaved form in
-GStreamer, which means that if there are multiple audio channels the
-samples for each channel are interleaved in memory, e.g.
-|LEFT|RIGHT|LEFT|RIGHT|LEFT|RIGHT| for stereo audio. A non-interleaved
-or planar arrangement in memory would look like
-|LEFT|LEFT|LEFT|RIGHT|RIGHT|RIGHT| instead, possibly with
-|LEFT|LEFT|LEFT| and |RIGHT|RIGHT|RIGHT| residing in separate memory
-chunks or separated by some padding.
-
-GStreamer has always had signalling for non-interleaved audio since
-version 1.0, but it was never actually properly implemented in any
-elements. audioconvert would advertise support for it, but wasn’t
-actually able to handle it correctly.
-
-With this release we now have full support for non-interleaved audio as
-well, which means more efficient integration with external APIs that
-handle audio this way, but also more efficient processing of certain
-operations like interleaving multiple 1-channel streams into a
-multi-channel stream which can be done without memory copies now.
-
-New API to support this has been added to the GStreamer Audio support
-library: There is now a new GstAudioMeta which describes how data is
-laid out inside the buffer, and buffers with non-interleaved audio must
-always carry this meta. To access the non-interleaved audio samples you
-must map such buffers with gst_audio_buffer_map() which works much like
-gst_buffer_map() or gst_video_frame_map() in that it will populate a
-little GstAudioBuffer helper structure passed to it with the number of
-samples, the number of planes and pointers to the start of each plane in
-memory. This function can also be used to map interleaved audio buffers
-in which case there will be only one plane of interleaved samples.
-
-Of course support for this has also been implemented in the various
-audio helper and conversion APIs, base classes, and in elements such as
-audioconvert, audioresample, audiotestsrc, audiorate.
-
-Support for Closed Captions and Other Ancillary Data in Video
-
-The video support library has gained support for detecting and
-extracting Ancillary Data from videos as per the SMPTE S291M
-specification, including:
-
-- a VBI (Vertical Blanking Interval) parser that can detect and
- extract Ancillary Data from Vertical Blanking Interval lines of
- component signals. This is currently supported for videos in v210
- and UYVY format.
-
-- a new GstMeta for closed captions: GstVideoCaptionMeta. This
- supports the two types of closed captions, CEA-608 and CEA-708,
- along with the four different ways they can be transported (other
- systems are a superset of those).
-
-- a VBI (Vertical Blanking Interval) encoder for writing ancillary
- data to the Vertical Blanking Interval lines of component signals.
-
-The new closedcaption plugin in gst-plugins-bad then makes use of all
-this new infrastructure and provides the following elements:
-
-- cccombiner: a closed caption combiner that takes a closed captions
- stream and another stream and adds the closed captions as
- GstVideoCaptionMeta to the buffers of the other stream.
-
-- ccextractor: a closed caption extractor which will take
- GstVideoCaptionMeta from input buffers and output them as a separate
- closed captions stream.
-
-- ccconverter: a closed caption converter that can convert between
- different formats
-
-- line21encoder, line21decoder: inject/extract line21 closed captions
- to/from SD video streams
-
-- cc708overlay: decodes CEA 608/708 captions and overlays them on
- video
-
-Additionally, the following elements have also gained Closed Caption
-support:
-
-- qtdemux and qtmux support CEA 608/708 Closed Caption tracks
-
-- mpegvideoparse, h264parse extracts Closed Captions from MPEG-2/H.264
- video streams
-
-- avviddec, avvidenc, x264enc got support for extracting/injecting
- Closed Captions
-
-- decklinkvideosink can output closed captions and decklinkvideosrc
- can extract closed captions
-
-- playbin and playbin3 learned how to autoplug CEA 608/708 CC overlay
- elements
-
-- the externally maintained ajavideosrc element for AJA capture cards
- has support for extracting closed captions
-
-The rsclosedcaption plugin in the Rust plugins collection includes a
-MacCaption (MCC) file parser and encoder.
+- FIXME
New Elements
-- overlaycomposition: New element that allows applications to draw
- GstVideoOverlayCompositions on a stream. The element will emit the
- "draw" signal for each video buffer, and the application then
- generates an overlay for that frame (or not). This is much more
- performant than e.g. cairooverlay for many use cases, e.g. because
- pixel format conversions can be avoided or the blitting of the
- overlay can be delegated to downstream elements (such as
- gloverlaycompositor). It’s particularly useful for cases where only
- a small section of the video frame should be drawn on.
-
-- gloverlaycompositor: New OpenGL-based compositor element that
- flattens any overlays from GstVideoOverlayCompositionMetas into the
- video stream. This element is also always part of glimagesink.
-
-- glalpha: New element that adds an alpha channel to a video stream.
- The values of the alpha channel can either be set to a constant or
- can be dynamically calculated via chroma keying. It is similar to
- the existing alpha element but based on OpenGL. Calculations are
- done in floating point so results may not be identical to the output
- of the existing alpha element.
-
-- rtpfunnel funnels together RTP streams into a single session. Use
- cases include multiplexing and bundle. webrtcbin uses it to
- implement BUNDLE support.
-
-- testsrcbin is a source element that provides an audio and/or video
- stream and also announces them using the recently-introduced
- GstStream API. This is useful for testing elements such as playbin3
- or uridecodebin3 etc.
-
-- New closed caption elements: cccombiner, ccextractor, ccconverter,
- line21encoder, line21decoder and cc708overlay (see above)
-
-- wpesrc: new source element acting as a Web Browser based on WebKit
- WPE
-
-- Two new OpenCV-based elements: cameracalibrate and cameraundistort
- that can communicate to figure out distortion correction parameters
- for a camera and correct for the distortion.
-
-- New sctp plugin based on usrsctp with sctpenc and sctpdec elements.
- These elements are used inside webrtcbin for implementing data
- channels.
+- FIXME
New element features and additions
-- playbin3, playbin and playsink have gained a new "text-offset"
- property to adjust the positioning of the selected subtitle stream
- vis-a-vis the audio and video streams. This uses subtitleoverlay’s
- new "subtitle-ts-offset" property. GstPlayer has gained matching API
- for this, namely gst_player_get_text_video_offset().
-
-- playbin3 buffering improvements: in network playback scenarios there
- may be multiple inputs to decodebin3, and buffering will be done
- before decodebin3 using queue2 or downloadbuffer elements inside
- urisourcebin. Since this is before any parsers or demuxers there may
- not be any bitrate information available for the various streams, so
- it was difficult to configure the buffering there smartly within
- global constraints. This was improved now: The queue2 elements
- inside urisourcebin will now use the new bitrate query to figure out
- a bitrate estimate for the stream if no bitrate was provided by
- upstream, and urisourcebin will use the bitrates of the individual
- queues to distribute the globally-set "buffer-size" budget in bytes
- to the various queues. urisourcebin also gained "low-watermark" and
- "high-watermark" properties which will be proxied to the internal
- queues, as well as a read-only "statistics" property which allows
- querying of the minimum/maximum/average byte and time levels of the
- queues inside the urisourcebin in question.
-
-- splitmuxsink has gained a couple of new features:
-
- - new "async-finalize" mode: This mode is useful for muxers or
- outputs that can take a long time to finalize a file. Instead of
- blocking the whole upstream pipeline while the muxer is doing
- its stuff, we can unlink it and spawn a new muxer + sink
- combination to continue running normally. This requires us to
- receive the muxer and sink (if needed) as factories via the new
- "muxer-factory" and "sink-factory" properties, optionally
- accompanied by their respective properties structures (set via
- the new "muxer-properties" and "sink-properties" properties).
- There are also new "muxer-added" and "sink-added" signals in
- case custom code has to be called for them to configure them.
-
- - "split-at-running-time" action signal: When called by the user,
- this action signal ends the current file (and starts a new one)
- as soon as the given running time is reached. If called multiple
- times, running times are queued up and processed in the order
- they were given.
-
- - "split-after" action signal to finish outputting the current GOP
- to the current file and then start a new file as soon as the GOP
- is finished and a new GOP is opened (unlike the existing
- "split-now" which immediately finishes the current file and
- writes the current GOP into the next newly-started file).
-
- - "reset-muxer" property: when unset, the muxer is reset using
- flush events instead of setting its state to NULL and back. This
- means the muxer can keep state across resets, e.g. mpegtsmux
- will keep the continuity counter continuous across segments as
- required by hlssink2.
-
-- qtdemux gained PIFF track encryption box support in addition to the
- already-existing PIFF sample encryption support, and also allows
- applications to select which encryption system to use via a
- "drm-preferred-decryption-system-id" context in case there are
- multiple options.
-
-- qtmux: the "start-gap-threshold" property determines now whether an
- edit list will be created to account for small gaps or offsets at
- the beginning of a stream in case the start timestamps of tracks
- don’t line up perfectly. Previously the threshold was hard-coded to
- 1% of the (video) frame duration, now it is 0 by default (so edit
- list will be created even for small differences), but fully
- configurable.
-
-- rtpjitterbuffer has improved end-of-stream handling
-
-- rtpmp4vpay will be prefered over rtpmp4gpay for MPEG-4 video in
- autoplugging scenarios now
-
-- rtspsrc now allows applications to send RTSP SET_PARAMETER and
- GET_PARAMETER requests using action signals.
-
-- rtspsrc has a small (100ms) configurable teardown delay by default
- to try and make sure an RTSP TEARDOWN request gets sent out when the
- source element shuts down. This will block the downward PAUSED to
- READY state change for a short time, but can be disabled where it’s
- a problem. Some servers only allow a limited number of concurrent
- clients, so if no proper TEARDOWN is sent new clients may have
- problems connecting to the server for a while.
-
-- souphttpsrc behaves better with low bitrate streams now. Before it
- would increase the read block size too quickly which could lead to
- it not reading any data from the socket for a very long time with
- low bitrate streams that are output live downstream. This could lead
- to servers kicking off the client.
-
-- filesink: do internal buffering to avoid performance regression with
- small writes since we bypass libc buffering by using writev()
- instead of fwrite()
-
-- identity: add "eos-after" property and fix "error-after" property
- when the element is reused
-
-- input-selector: lets context queries pass through, so that
- e.g. upstream OpenGL elements can use contexts and displays
- advertised by downstream elements
-
-- queue2: avoid ping-pong between 0% and 100% buffering messages if
- upstream is pushing buffers larger than one of its limits, plus
- performance optimisations
-
-- opusdec: new "phase-inversion" property to control phase inversion.
- When enabled, this will slightly increase stereo quality, but
- produces a stream that when downmixed to mono will suffer audio
- distortions.
-
-- The x265enc HEVC encoder also exposes a "key-int-max" property to
- configure the maximum allowed GOP size now.
-
-- decklinkvideosink has seen stability improvements for long-running
- pipelines (potential crash due to overflow of leaked clock refcount)
- and clock-slaving improvements when performing flushing seeks
- (causing stalls in the output timeline), pausing and/or buffering.
-
-- srtpdec, srtpenc: add support for MKIs which allow multiple keys to
- be used with a single SRTP stream
-
-- srtpdec, srtpenc: add support for AES-GCM and also add support for
- it in gst-rtsp-server and rtspsrc.
-
-- The srt Secure Reliable Transport plugin has integrated server and
- client elements srt{client,server}{src,sink} into one (srtsrc and
- srtsink), since SRT connection mode can be changed by uri
- parameters.
-
-- h264parse and h265parse will handle SEI recovery point messages and
- mark recovery points as keyframes as well (in addition to IDR
- frames)
-
-- webrtcbin: "add-turn-server" action signal to pass multiple ICE
- relays (TURN servers).
-
-- The removesilence element has received various new features and
- properties, such as a "threshold" property, detecting silence only
- after minimum silence time/buffers, a "silent" property to control
- bus message notifications as well as a "squash" property.
-
-- AOMedia AV1 decoder gained support for 10/12bit decoding whilst the
- AV1 encoder supports more image formats and subsamplings now and
- acquired support for rate control and profile related configuration.
-
-- The Fraunhofer fdkaac plugin can now be built against the 2.0.0
- version API and has improved multichannel support
-
-- kmssink now supports unpadded 24-bit RGB and can configure mode
- setting from video info, which enables display of multi-planar
- formats such as I420 or NV12 with modesetting. It has also gained a
- number of new properties: The "restore-crtc" property does what it
- says on the tin and is enabled by default. "plane-properties" and
- "connector-properties" can be used to pass custom properties to the
- DRM.
-
-- waylandsink has a "fullscreen" property now and supports the
- XDG-Shell protocol.
-
-- decklinkvideosink, decklinkvideosrc support selecting between
- half/full duplex
-
-- The vulkan plugin gained support for macOS and iOS via MoltenVK in
- addition to the existing support for X11 and Wayland
-
-- imagefreeze has a new num-buffers property to limit the number of
- buffers that are produced and to send an EOS event afterwards
-
-- webrtcbin has a new, introspectable get-transceiver signal in
- addition to the old get-transceivers signal that couldn’t be used
- from bindings
-
-- Support for per-element latency information was added to the latency
- tracer
+- FIXME
Plugin and library moves
-- The stereo element was moved from -bad into the existing audiofx
- plugin in -good. If you get duplicate type registration warnings
- when upgrading, check that you don’t have a stale stereoplugin lying
- about somewhere.
-
-GstVideoAggregator, compositor, and OpenGL mixer elements moved from -bad to -base
-
-GstVideoAggregator is a new base class for raw video mixers and muxers
-and is based on GstAggregator. It provides defined-latency mixing of raw
-video inputs and ensures that the pipeline won’t stall even if one of
-the input streams stops producing data.
-
-As part of the move to stabilise the API there were some last-minute API
-changes and clean-ups, but those should mostly affect internal elements.
-Most notably, the "ignore-eos" pad property was renamed to
-"repeat-after-eos" and the conversion code was moved to a
-GstVideoAggregatorConvertPad subclass to avoid code duplication, make
-things less awkward for subclasses like the OpenGL-based video mixer,
-and make the API more consistent with the audio aggregator API.
-
-It is used by the compositor element, which is a replacement for
-‘videomixer’ which did not handle live inputs very well. compositor
-should behave much better in that respect and generally behave as one
-would expected in most scenarios.
-
-The compositor element has gained support for per-pad blending mode
-operators (SOURCE, OVER, ADD) which determines what operator to use for
-blending this pad over the previous ones. This can be used to implement
-crossfading and the available operators can be extended in the future as
-needed.
-
-A number of OpenGL-based video mixer elements (glvideomixer, glmixerbin,
-glvideomixerelement, glstereomix, glmosaic) which are built on top of
-GstVideoAggregator have also been moved from -bad to -base now. These
-elements have been merged into the existing OpenGL plugin, so if you get
-duplicate type registration warnings when upgrading, check that you
-don’t have a stale openglmixers plugin lying about somewhere.
+- FIXME
Plugin removals
The following plugins have been removed from gst-plugins-bad:
-- The experimental daala plugin has been removed, since it’s not so
- useful now that all effort is focused on AV1 instead, and it had to
- be enabled explicitly with --enable-experimental anyway.
-
-- The spc plugin has been removed. It has been replaced by the gme
- plugin.
-
-- The acmmp3dec and acmenc plugins for Windows have been removed. ACM
- is an ancient legacy API and there was no point in keeping the
- plugins around for a licensed MP3 decoder now that the MP3 patents
- have expired and we have a decoder in -good. We also didn’t ship
- these in our cerbero-built Windows packages, so it’s unlikely that
- they’ll be missed.
+- FIXME
Miscellaneous API additions
-- GstBitwriter: new generic bit writer API to complement the existing
- bit reader
-
-- gst_buffer_new_wrapped_bytes() creates a wrap buffer from a GBytes
-
-- gst_caps_set_features_simple() sets a caps feature on all the
- structures of a GstCaps
-
-- New GST_QUERY_BITRATE query: This allows determining from downstream
- what the expected bitrate of a stream may be which is useful in
- queue2 for setting time based limits when upstream does not provide
- timing information. tsdemux, qtdemux and matroskademux have basic
- support for this query on their sink pads.
-
-- elements: there is a new “Hardware” class specifier. Elements
- interacting with hardware devices should specify this classifier in
- their element factory class metadata. This is useful to advertise as
- one might need to put such elements into READY state to test if the
- hardware is present in the system for example.
-
-- protection: Add a new definition for unspecified system protection,
- GST_PROTECTION_UNSPECIFIED_SYSTEM_ID
-
-- take functions for various mini objects that didn’t have them yet:
- gst_query_take(), gst_message_take(), gst_tag_list_take(),
- gst_buffer_list_take(). Unlike the various _replace() functions
- _take() does not increase the reference count but takes ownership of
- the mini object passed.
-
-- clear functions for various mini object types and GstObject which
- unrefs the object or mini object (if non-NULL) and sets the variable
- pointed to to NULL: gst_clear_structure(), gst_clear_tag_list(),
- gst_clear_query(), gst_clear_message(), gst_clear_event(),
- gst_clear_caps(), gst_clear_buffer_list(), gst_clear_buffer(),
- gst_clear_mini_object(), gst_clear_object()
-
-- miniobject: new API gst_mini_object_add_parent() and
- gst_mini_object_remove_parent() to set parent pointers on mini
- objects to ensure correct writability: Every container of
- miniobjects now needs to store itself as parent in the child object,
- and remove itself again later. A mini object is then only writable
- if there is at most one parent, that parent is writable itself, and
- the reference count of the mini object is 1. GstBuffer (for
- memories), GstBufferList (for buffers), GstSample (for caps, buffer,
- bufferlist), and GstVideoOverlayComposition were updated
- accordingly. Without this it was possible to have e.g. a buffer list
- with a refcount of 2 used in two places at once that both modify the
- same buffer with refcount 1 at the same time wrongly thinking it is
- writable even though it’s really not.
-
-- poll: add API to watch for POLLPRI and stop treating POLLPRI as a
- read. This is useful to wait for video4linux events which are
- signalled via POLLPRI.
-
-- sample: new API to update the contents of a GstSample and make it
- writable: gst_sample_set_buffer(), gst_sample_set_caps(),
- gst_sample_set_segment(), gst_sample_set_info(), plus
- gst_sample_is_writable() and gst_sample_make_writable(). This makes
- it possible to reuse a sample object and avoid unnecessary memory
- allocations, for example in appsink.
-
-- ClockIDs now keep a weak reference to underlying clock to avoid
- crashes in basesink in corner cases where a clock goes away while
- the ClockID is still in use, plus some new API
- (gst_clock_id_get_clock(), gst_clock_id_uses_clock()) to check the
- clock a ClockID is linked to.
-
-- The GstCheck unit test library gained a
- fail_unless_equals_clocktime() convenience macro as well as some new
- GstHarness API for for proposing meta APIs from the allocation
- query: gst_harness_add_propose_allocation_meta(). ASSERT_CRITICAL()
- checks in unit tests are now skipped if GStreamer was compiled with
- GST_DISABLE_GLIB_CHECKS.
-
-- gst_audio_buffer_truncate() convenience function to truncate a raw
- audio buffer
-
-- GstDiscoverer has support for caching the results of discovery in
- the default cache directory. This can be enabled with the use-cache
- property and is disabled by default.
-
-- GstMeta that are attached to GstBuffers are now always stored in the
- order in which they were added.
-
-- Additional support for signalling ONVIF specific features were
- added: the SEEK event can store a trickmode-interval now and support
- for the Rate-Control and Frames RTSP headers was added to the RTSP
- library.
+- FIXME
Miscellaneous performance and memory optimisations
As always there have been many performance and memory usage improvements
-across all components and modules. Some of them (such as dmabuf
-import/export) have already been mentioned elsewhere so won’t be
-repeated here.
+across all components and modules. Some of them have already been
+mentioned elsewhere so won’t be repeated here.
The following list is only a small snapshot of some of the more
interesting optimisations that haven’t been mentioned in other contexts
yet:
-- The GstVideoEncoder and GstVideoDecoder base classes now release the
- STREAM_LOCK when pushing out buffers, which means (multi-threaded)
- encoders and decoders can now receive and continue to process input
- buffers whilst waiting for downstream elements in the pipeline to
- process the buffer that was pushed out. This increases throughput
- and reduces processing latency, also and especially for
- hardware-accelerated encoder/decoder elements.
-
-- GstQueueArray has seen a few API additions
- (gst_queue_array_peek_nth(), gst_queue_array_set_clear_func(),
- gst_queue_array_clear()) so that it can be used in other places like
- GstAdapter instead of a GList, which reduces allocations and
- improves performance.
-
-- appsink now reuses the sample object in pull_sample() if possible
-
-- rtpsession only starts the RTCP thread when it’s actually needed now
-
-- udpsrc uses a buffer pool now and the GstUdpSrc object structure was
- optimised for better cache performance
+- FIXME
GstPlayer
-- API was added to fine-tune the synchronisation offset between
- subtitles and video
+- FIXME
Miscellaneous changes
-- As a result of moving to newer FFmpeg APIs, encoder and decoder
- elements exposed by the GStreamer FFmpeg wrapper plugin (gst-libav)
- may have seen possibly incompatible changes to property names and/or
- types, and not all properties exposed might be functional. We are
- still reviewing the new properties and aim to minimise breaking
- changes at least for the most commonly-used properties, so please
- report any issues you run into!
+- FIXME
OpenGL integration
-- The OpenGL mixer elements have been moved from -bad to
- gst-plugins-base (see above)
-
-- The Mesa GBM backend now supports headless mode
-
-- gloverlaycompositor: New OpenGL-based compositor element that
- flattens any overlays from GstVideoOverlayCompositionMetas into the
- video stream.
-
-- glalpha: New element that adds an alpha channel to a video stream.
- The values of the alpha channel can either be set to a constant or
- can be dynamically calculated via chroma keying. It is similar to
- the existing alpha element but based on OpenGL. Calculations are
- done in floating point so results may not be identical to the output
- of the existing alpha element.
-
-- glupload: Implement direct dmabuf uploader, the idea being that some
- GPUs (like the Vivante series) can actually perform the YUV->RGB
- conversion internally, so no custom conversion shaders are needed.
- To make use of this feature, we need an additional uploader that can
- import DMABUF FDs and also directly pass the pixel format, relying
- on the GPU to do the conversion.
-
-- The OpenGL library no longer restores the OpenGL viewport. This is a
- performance optimization to not require performing multiple
- expensive glGet*() function calls per frame. This affects any
- application or plugin use of the following functions and objects:
- - glcolorconvert library object (not the element)
- - glviewconvert library object (not the element)
- - gst_gl_framebuffer_draw_to_texture()
- - custom GstGLWindow implementations
+- FIXME
Tracing framework and debugging improvements
-- There is now a GDB PRETTY PRINTER FOR VARIOUS GSTREAMER TYPES: For
- GstObject pointers the type and name is added, e.g.
- 0x5555557e4110 [GstDecodeBin|decodebin0]. For GstMiniObject pointers
- the object type is added, e.g. 0x7fffe001fc50 [GstBuffer]. For
- GstClockTime and GstClockTimeDiff the time is also printed in human
- readable form, e.g. 150116219955 [+0:02:30.116219955].
-
-- GDB EXTENSION WITH TWO CUSTOM GDB COMMANDS gst-dot AND gst-print:
-
- - gst-dot creates dot files that a very close to what
- GST_DEBUG_BIN_TO_DOT_FILE() produces, but object properties and
- buffer contents such as codec-data in caps are not available.
-
- - gst-print produces high-level information about a GStreamer
- object. This is currently limited to pads for GstElements and
- events for the pads. The output may look like this:
-
-- gst_structure_to_string() now serialises the actual value of
- pointers when serialising GstStructures instead of claiming they’re
- NULL. This makes debug logging in various places less confusing,
- because it’s clear now that structure fields actually hold valid
- objects. Such object pointer values will never be deserialised
- however.
+- FIXME
Tools
-- gst-inspect-1.0 has coloured output now and will automatically use a
- pager if the output does not fit on a page. This only works in a
- UNIX environment and if the output is not piped, and on Windows 10
- build 16257 or newer. If you don’t like the colours you can disable
- them by setting the GST_INSPECT_NO_COLORS=1 environment variable or
- passing the --no-color command line option.
+- FIXME
GStreamer RTSP server
-- Improved backlog handling when using TCP interleaved for data
- transport. Before there was a fixed maximum size for backlog
- messages, which was prone to deadlocks and made it difficult to
- control memory usage with the watch backlog. The RTSP server now
- limits queued TCP data messages to one per stream, moving queuing of
- the data into the pipeline and leaving the RTSP connection
- responsive to RTSP messages in both directions, preventing all those
- problems.
-
-- Initial ULP Forward Error Correction support in rtspclientsink and
- for RECORD mode in the server.
-
-- API to explicitly enable retransmission requests (RTX)
-
-- Lots of multicast-related fixes
-
-- rtsp-auth: Add support for parsing .htdigest files
+- FIXME
GStreamer VAAPI
-- Support Wayland’s display for context sharing, so the application
- can pass its own wl_display in order to be used for the VAAPI
- display creation.
-
-- A lot of work to support new Intel hardware using media-driver as VA
- backend.
-
-- For non-x86 devices, VAAPI display can instantiate, through DRM,
- with no PCI bus. This enables the usage of libva-v4l2-request
- driver.
-
-- Added support for XDG-shell protocol as wl_shell replacement which
- is currently deprecated. This change add as dependency
- wayland-protocol.
-
-- GstVaapiFilter, GstVaapiWindow, and GstVaapiDecoder classes now
- inherit from GstObject, gaining all the GStreamer’s instrumentation
- support.
-
-- The metadata now specifies the plugin as Hardware class.
-
-- H264 decoder is more stable with problematic streams.
-
-- In H265 decoder added support for profiles main-422-10 (P010_10LE),
- main-444 (AYUV) and main-444-10 (Y410)
-
-- JPEG decoder handles dynamic resolution changes.
-
-- More specification adherence in H264 and H265 encoders.
+- FIXME
GStreamer OMX
-- Add support of NV16 format to video encoders input.
-
-- Video decoders now handle the ALLOCATION query to tell upstream
- about the number of buffers they require. Video encoders will also
- use this query to adjust their number of allocated buffers
- preventing starvation when using dynamic buffer mode.
-
-- The OMX_PERFORMANCE debug category has been renamed to OMX_API_TRACE
- and can now be used to track a widder variety of interactions
- between OMX and GStreamer.
-
-- Video encoders will now detect frame rate only changes and will
- inform OMX about it rather than doing a full format reset.
-
-- Various Zynq UltraScale+ specific improvements:
- - Video encoders are now able to import dmabuf from upstream.
- - Support for HEVC range extension profiles and more AVC profiles.
- - We can now request video encoders to generate an IDR using the
- force key unit event.
+- FIXME
GStreamer Editing Services and NLE
-- Added a gesdemux element, it is an auto pluggable element that
- allows decoding edit list like files supported by GES
-
-- Added gessrc which wraps a GESTimeline as a standard source element
- (implementing the ges protocol handler)
-
-- Added basic support for videorate::rate property potentially
- allowing changing playback speed
-
-- Layer priority is now fully automatic and they should be moved with
- the new ges_timeline_move_layer method, ges_layer_set_priority is
- now deprecated.
-
-- Added a ges_timeline_element_get_layer_priority so we can simply get
- all information about GESTimelineElement position in the timeline
-
-- GESVideoSource now auto orientates the images if it is defined in a
- meta (overridable).
-
-- Added some PyGObject overrides to make the API more pythonic
-
-- The threading model has been made more explicit with safe guard to
- make sure not thread safe APIs are not used from the wrong threads.
- It is also now possible to properly handle in what thread the API
- should be used.
-
-- Optimized GESClip and GESTrackElement creation
-
-- Added a way to compile out the old, unused and deprecated
- GESPitiviFormatter
-
-- Re implemented the timeline editing API making it faster and making
- the code much more maintainable
-
-- Simplified usage of nlecomposition outside GES by removing quirks in
- it API usage and removing the need to treat it specially from an
- application perspective.
-
-- ges-launch-1.0:
-
- - Added support to add titles to the timeline
- - Enhance the help auto generating it from the code
-
-- Deprecate ges_timeline_load_from_uri as loading the timeline should
- be done through a project now
-
-- MANY leaks have been plugged and the unit testsuite is now “leak
- free”
+- FIXME
GStreamer validate
-- Added an action type to verify the checksum of the sink last-sample
-
-- Added an include keyword to validate scenarios
-
-- Added the notion of variable in scenarios, with the set-vars keyword
-
-- Started adding support for “performance” like tests by allowing to
- define the number of dropped buffers or the minimum buffer frequency
- on a specific pad
-
-- Added a validateflow plugin which allows defining the data flow to
- be seen on a particular pad and verifying that following runs match
- the expectations
-
-- Added support for appsrc based test definition so we can instrument
- the data pushed into the pipeline from scenarios
-
-- Added a mockdecryptor allowing adding tests with on encrypted files,
- the element will potentially be instrumented with a validate
- scenario
-
-- gst-validate-launcher:
-
- - Cleaned up output
-
- - Changed the default for “muting” tests as user doesn’t expect
- hundreds of windows to show up when running the testsuite
-
- - Fixed the outputted xunit files to be compatible with GitLab
-
- - Added support to run tests on media files in push mode (using
- pushfile://)
-
- - Added support for running inside gst-build
-
- - Added support for running ssim tests on rendered files
-
- - Added a way to simply define tests on pipelines through a simple
- .json file
-
- - Added a python app to easily run python testsuite reusing all
- the launcher features
-
- - Added flatpak knowledge so we can print backtrace even when
- running from within flatpak
-
- - Added a way to automatically generated “known issues”
- suppressions lines
-
- - Added a way to rerun tests to check if they are flaky and added
- a way to tolerate tests known to be flaky
-
- - Add a way to output html log files
+- FIXME
GStreamer Python Bindings
-- add binding for gst_pad_set_caps()
-
-- pygobject dependency requirement was bumped to >= 3.8
-
-- new audiotestsrc, audioplot, and mixer plugin examples, and a
- dynamic pipeline example
+- FIXME
GStreamer C# Bindings
-- bindings for the GstWebRTC library
+- FIXME
GStreamer Rust Bindings
-The GStreamer Rust bindings are now officially part of the GStreamer
-project and are also maintained in the GStreamer GitLab.
-
-The releases will generally not be synchronized with the releases of
-other GStreamer parts due to dependencies on other projects.
-
-Also unlike the other GStreamer libraries, the bindings will not commit
-to full API stability but instead will follow the approach that is
-generally taken by Rust projects, e.g.:
-
-1) 0.12.X will be completely API compatible with all other 0.12.Y
- versions.
-2) 0.12.X+1 will contain bugfixes and compatible new feature additions.
-3) 0.13.0 will _not_ be backwards compatible with 0.12.X but projects
- will be able to stay at 0.12.X without any problems as long as they
- don’t need newer features.
-
-The current stable release is 0.12.2 and the next release series will be
-0.13, probably around March 2019.
-
-At this point the bindings cover most of GStreamer core (except for most
-notably GstAllocator and GstMemory), and most parts of the app, audio,
-base, check, editing-services, gl, net. pbutils, player, rtsp,
-rtsp-server, sdp, video and webrtc libraries.
-
-Also included is support for creating subclasses of the following types
-and writing GStreamer plugins:
-
-- gst::Element
-- gst::Bin and gst::Pipeline
-- gst::URIHandler and gst::ChildProxy
-- gst::Pad, gst::GhostPad
-- gst_base::Aggregator and gst_base::AggregatorPad
-- gst_base::BaseSrc and gst_base::BaseSink
-- gst_base::BaseTransform
-
-Changes to 0.12.X since 0.12.0
-
-Fixed
-
-- PTP clock constructor actually creates a PTP instead of NTP clock
-
-Added
-
-- Bindings for GStreamer Editing Services
-- Bindings for GStreamer Check testing library
-- Bindings for the encoding profile API (encodebin)
-
-- VideoFrame, VideoInfo, AudioInfo, StructureRef implements Send and
- Sync now
-- VideoFrame has a function to get the raw FFI pointer
-- From impls from the Error/Success enums to the combined enums like
- FlowReturn
-- Bin-to-dot file functions were added to the Bin trait
-- gst_base::Adapter implements SendUnique now
-- More complete bindings for the gst_video::VideoOverlay interface,
- especially
- gst_video::is_video_overlay_prepare_window_handle_message()
-
-Changed
-
-- All references were updated from GitHub to freedesktop.org GitLab
-- Fix various links in the README.md
-- Link to the correct location for the documentation
-- Remove GitLab badge as that only works with gitlab.com currently
-
-Changes in git master for 0.13
-
-Fixed
-
-- gst::tag::Album is the album tag now instead of artist sortname
-
-Added
-
-- Subclassing infrastructure was moved directly into the bindings,
- making the gst-plugin crate deprecated. This involves many API
- changes but generally cleans up code and makes it more flexible.
- Take a look at the gst-plugins-rs crate for various examples.
-
-- Bindings for CapsFeatures and Meta
-- Bindings for
- ParentBufferMeta,VideoMetaandVideoOverlayCompositionMeta`
-- Bindings for VideoOverlayComposition and VideoOverlayRectangle
-- Bindings for VideoTimeCode
-
-- UniqueFlowCombiner and UniqueAdapter wrappers that make use of the
- Rust compile-time mutability checks and expose more API in a safe
- way, and as a side-effect implement Sync and Send now
-
-- More complete bindings for Allocation Query
-- pbutils functions for codec descriptions
-- TagList::iter() for iterating over all tags while getting a single
- value per tag. The old ::iter_tag_list() function was renamed to
- ::iter_generic() and still provides access to each value for a tag
-- Bus::iter() and Bus::iter_timed() iterators around the corresponding
- ::pop\*() functions
-
-- serde serialization of Value can also handle Buffer now
-
-- Extensive comments to all examples with explanations
-- Transmuxing example showing how to use typefind, multiqueue and
- dynamic pads
-- basic-tutorial-12 was ported and added
-
-Changed
-
-- Rust 1.31 is the minimum supported Rust version now
-- Update to latest gir code generator and glib bindings
-
-- Functions returning e.g. gst::FlowReturn or other “combined” enums
- were changed to return split enums like
- Result<gst::FlowSuccess, gst::FlowError> to allow usage of the
- standard Rust error handling.
-
-- MiniObject subclasses are now newtype wrappers around the underlying
- GstRc<FooRef> wrapper. This does not change the API in any breaking
- way for the current usages, but allows MiniObjects to also be
- implemented in other crates and makes sure rustdoc places the
- documentation in the right places.
-
-- BinExt extension trait was renamed to GstBinExt to prevent conflicts
- with gtk::Bin if both are imported
-
-- Buffer::from_slice() can’t possible return None
-
-- Various clippy warnings
+- FIXME
GStreamer Rust Plugins
-Like the GStreamer Rust bindings, the Rust plugins are now officially
-part of the GStreamer project and are also maintained in the GStreamer
-GitLab.
-
-In the 0.3.x versions this contained infrastructure for writing
-GStreamer plugins in Rust, and a set of plugins.
-
-In git master that infrastructure was moved to the GLib and GStreamer
-bindings directly, together with many other improvements that were made
-possible by this, so the gst-plugins-rs repository only contains
-GStreamer elements now.
-
-Elements included are:
-
-- Tutorials plugin: identity, rgb2gray and sinesrc with extensive
- comments
-
-- rsaudioecho, a port of the audiofx element
-
-- rsfilesrc, rsfilesink
-
-- rsflvdemux, a FLV demuxer. Not feature-equivalent with flvdemux yet
-
-- threadshare plugin: ts-appsrc, ts-proxysrc/sink, ts-queue, ts-udpsrc
- and ts-tcpclientsrc elements that use a fixed number of threads and
- share them between instances. For more background about these
- elements see Sebastian’s talk “When adding more threads adds more
- problems - Thread-sharing between elements in GStreamer” at the
- GStreamer Conference 2017.
+- FIXME
-- rshttpsrc, a HTTP source around the hyper/reqwest Rust libraries.
- Not feature-equivalent with souphttpsrc yet.
-- togglerecord, an element that allows to start/stop recording at any
- time and keeps all audio/video streams in sync.
-
-- mccparse and mccenc, parsers and encoders for the MCC closed caption
- file format.
-
-Changes to 0.3.X since 0.3.0
-
-- All references were updated from GitHub to freedesktop.org GitLab
-- Fix various links in the README.md
-- Link to the correct location for the documentation
-
-Changes in git master for 0.4
-
-- togglerecord: Switch to parking_lot crate for mutexes/condition
- variables for lower overhead
-- Merge threadshare plugin here
-- New closedcaption plugin with mccparse and mccenc elements
-- New identity element for the tutorials plugin
-
-- Register plugins statically in tests instead of relying on the
- plugin loader to find the shared library in a specific place
-
-- Update to the latest API changes in the GLib and GStreamer bindings
-- Update to the latest versions of all crates
+Build and Dependencies
+- The Autotools build system has finally been removed in favour of the
+ Meson build system. Developers who currently use gst-uninstalled
+ should move to gst-build.
-Build and Dependencies
+- API and plugin documentation are no longer built with gtk_doc. The
+ gtk_doc documentation has been removed in favour of a new unified
+ documentation module built with hotdoc. The intention is to
+ distribute the generated documentation in form of tarballs alongside
+ releases.
-- The MESON BUILD SYSTEM BUILD IS NOW FEATURE-COMPLETE (*) and it is
- now the recommended build system on all platforms and also used by
- Cerbero to build GStreamer on all platforms. The Autotools build is
- scheduled to be removed in the next cycle. Developers who currently
- use gst-uninstalled should move to gst-build. The build option
- naming has been cleaned up and made consistent and there are now
- feature options to enable/disable plugins and various other features
- on a case-by-case basis. (*) with the exception of plugin docs which
- will be handled differently in future
-
-- Symbol export in libraries is now controlled via explicit exports
- using symbol visibility or export defines where supported, to ensure
- consistency across all platforms. This also allows libraries to have
- exports that vary based on detected platform features and configure
- options as is the case with the GStreamer OpenGL integration library
- for example. A few symbols that had been exported by accident in
- earlier versions may no longer be exported. These symbols will not
- have had declarations in any public header files then though and
- would not have been usable.
-
-- The GStreamer FFmpeg wrapper plugin (gst-libav) now depends on
- FFmpeg 4.x and uses the new FFmpeg 4.x API and stopped relying on
- ancient API that was removed with the FFmpeg 4.x release. This means
- that it is no longer possible to build this module against an older
- system-provided FFmpeg 3.x version. Use the internal FFmpeg 4.x copy
- instead if you build using autotools, or use gst-libav 1.14.x
- instead which targets the FFmpeg 3.x API and _should_ work fine in
- combination with a newer GStreamer. It’s difficult for us to support
- both old and new FFmpeg APIs at the same time, apologies for any
- inconvenience caused.
-
-- Hardware-accelerated Nvidia video encoder/decoder plugins nvdec and
- nvenc can be built against CUDA Toolkit versions 9 and 10.0 now. The
- dynlink interface has been dropped since it’s deprecated in 10.0.
-
-- The (optional) OpenCV requirement has been bumped to >= 3.0.0 and
- the plugin can also be built against OpenCV 4.x now.
-
-- New sctp plugin based on usrsctp (for WebRTC data channels)
+- FIXME
Cerbero
Cerbero has seen a number of improvements:
-- Cerbero has been ported to Python 3 and requires Python 3.5 or newer
- now
-
-- Source tarballs are now protected by checksums in the recipes to
- guard against download errors and malicious takeover of projects or
- websites. In addition, downloads are only allowed via secure
- transports now and plain HTTP, FTP and git:// transports are not
- allowed anymore.
-
-- There is now a new fetch-bootstrap command which downloads sources
- required for bootstrapping, with an optional --build-tools-only
- argument to match the bootstrap --build-tools-only command.
-
-- The bootstrap, build, package and bundle-source commands gained a
- new --offline switch that ensures that only sources from the cache
- are used and never downloaded via the network. This is useful in
- combination with the fetch and fetch-bootstrap commands that acquire
- sources ahead of time before any build steps are executed. This
- allows more control over the sources used and when sources are
- updated, and is particularly useful for build environments that
- don’t have network access.
-
-- bootstrap --assume-yes will automatically say ‘yes’ to any
- interactive prompts during the bootstrap stage, such as those from
- apt-get or yum.
-
-- bootstrap --system-only will only bootstrap the system without build
- tools.
-
-- Manifest support: The build manifest can be used in continuous
- integration (CI) systems to fixate the Git revision of certain
- projects so that all builds of a pipeline are on the same reference.
- This is used in GStreamer’s gitlab CI for example. It can also be
- used in order to re-produce a specific build. To set a manifest, you
- can set manifest = 'my_manifest.xml' in your configuration file, or
- use the --manifest command line option. The command line option will
- take precendence over anything specific in the configuration file.
-
-- The new build-deps command can be used to build only the
- dependencies of a recipe, without the recipe itself.
-
-- new --list-variants command to list available variants
-
-- variants can now be set on the command line via the -v option as a
- comma-separated list. This overrides any variants set in any
- configuration files.
-
-- new qt5, intelmsdk and nvidia variants for enabling Qt5 and hardware
- codec support. See the Enabling Optional Features with Variants
- section in the Cerbero documentation for more details how to enable
- and use these variants.
-
-- A new -t / --timestamp command line switch makes commands print
- timestamps
+- FIXME
Platform-specific changes and improvements
Android
-- toolchain: update compiler to clang and NDKr18. NDK r18 removed the
- armv5 target and only has Android platforms that target at least
- armv7 so the armv5 target is not useful anymore.
-
-- The way that GIO modules are named has changed due to upstream GLib
- natively adding support for loading static GIO modules. This means
- that any GStreamer application using gnutls for SSL/TLS on the
- Android or iOS platforms (or any other setup using static libraries)
- will fail to link looking for the g_io_module_gnutls_load_static()
- function. The new function name is now
- g_io_gnutls_load(gpointer data). data can be NULL for a static
- library. Look at this commit for the necessary change in the
- examples.
-
-- various build issues on Android have been fixed.
+- FIXME
macOS and iOS
-- various build issues on iOS have been fixed.
-
-- the minimum required iOS version is now 9.0. The difference in
- adoption between 8.0 and 9.0 is 0.1% and the bump to 9.0 fixes some
- build issues.
-
-- The way that GIO modules are named has changed due to upstream GLib
- natively adding support for loading static GIO modules. This means
- that any GStreamer application using gnutls for SSL/TLS on the
- Android or iOS platforms (or any other setup using static libraries)
- will fail to link looking for the g_io_module_gnutls_load_static()
- function. The new function name is now
- g_io_gnutls_load(gpointer data). data can be NULL for a static
- library. Look at this commit for the necessary change in the
- examples.
+- FIXME
Windows
-- The webrtcdsp element is shipped again as part of the Windows binary
- packages, the build system issue has been resolved.
-
-- ‘Inconsistent DLL linkage’ warnings when building with MSVC have
- been fixed
-
-- Hardware-accelerated Nvidia video encoder/decoder plugins nvdec and
- nvenc build on Windows now, also with MSVC and using Meson.
-
-- The ksvideosrc camera capture plugin supports 16-bit grayscale video
- now
+- toolchain upgrade
-- The wasapisrc audio capture element implements loopback recording
- from another output device or sink
-
-- wasapisink recover from low buffer levels in shared mode and some
- exclusive mode fixes
-
-- dshowsrc now implements the GstDeviceMonitor interface
+- FIXME
Contributors
-Aaron Boxer, Aleix Conchillo Flaqué, Alessandro Decina, Alexandru Băluț,
-Alex Ashley, Alexey Chernov, Alicia Boya García, Amit Pandya, Andoni
-Morales Alastruey, Andreas Frisch, Andre McCurdy, Andy Green, Anthony
-Violo, Antoine Jacoutot, Antonio Ospite, Arun Raghavan, Aurelien Jarno,
-Aurélien Zanelli, ayaka, Bananahemic, Bastian Köcher, Branko Subasic,
-Brendan Shanks, Carlos Rafael Giani, Charlie Turner, Christoph Reiter,
-Corentin Noël, Daeseok Youn, Damian Vicino, Dan Kegel, Daniel Drake,
-Daniel Klamt, Danilo Spinella, Dardo D Kleiner, David Ing, David
-Svensson Fors, Devarsh Thakkar, Dimitrios Katsaros, Edward Hervey,
-Emilio Pozuelo Monfort, Enrique Ocaña González, Erlend Eriksen, Ezequiel
-Garcia, Fabien Dessenne, Fabrizio Gennari, Florent Thiéry, Francisco
-Velazquez, Freyr666, Garima Gaur, Gary Bisson, George Kiagiadakis, Georg
-Lippitsch, Georg Ottinger, Geunsik Lim, Göran Jönsson, Guillaume
-Desmottes, H1Gdev, Haihao Xiang, Haihua Hu, Harshad Khedkar, Havard
-Graff, He Junyan, Hoonhee Lee, Hosang Lee, Hyunjun Ko, Ilya Smelykh,
-Ingo Randolf, Iñigo Huguet, Jakub Adam, James Stevenson, Jan Alexander
-Steffens, Jan Schmidt, Jerome Laheurte, Jimmy Ohn, Joakim Johansson,
-Jochen Henneberg, Johan Bjäreholt, John-Mark Bell, John Bassett, John
-Nikolaides, Jonathan Karlsson, Jonny Lamb, Jordan Petridis, Josep Torra,
-Joshua M. Doe, Jos van Egmond, Juan Navarro, Julian Bouzas, Jun Xie,
-Junyan He, Justin Kim, Kai Kang, Kim Tae Soo, Kirill Marinushkin, Kyrylo
-Polezhaiev, Lars Petter Endresen, Linus Svensson, Louis-Francis
-Ratté-Boulianne, Lucas Stach, Luis de Bethencourt, Luz Paz, Lyon Wang,
-Maciej Wolny, Marc-André Lureau, Marc Leeman, Marco Trevisan (Treviño),
-Marcos Kintschner, Marian Mihailescu, Marinus Schraal, Mark Nauwelaerts,
-Marouen Ghodhbane, Martin Kelly, Matej Knopp, Mathieu Duponchelle,
-Matteo Valdina, Matthew Waters, Matthias Fend, memeka, Michael Drake,
-Michael Gruner, Michael Olbrich, Michael Tretter, Miguel Paris, Mike
-Wey, Mikhail Fludkov, Naveen Cherukuri, Nicola Murino, Nicolas Dufresne,
-Niels De Graef, Nirbheek Chauhan, Norbert Wesp, Ognyan Tonchev, Olivier
-Crête, Omar Akkila, Pat DeSantis, Patricia Muscalu, Patrick Radizi,
-Patrik Nilsson, Paul Kocialkowski, Per Forlin, Peter Körner, Peter
-Seiderer, Petr Kulhavy, Philippe Normand, Philippe Renon, Philipp Zabel,
-Pierre Labastie, Piotr Drąg, Roland Jon, Roman Sivriver, Roman Shpuntov,
-Rosen Penev, Russel Winder, Sam Gigliotti, Santiago Carot-Nemesio,
-Sean-Der, Sebastian Dröge, Seungha Yang, Shi Yan, Sjoerd Simons, Snir
-Sheriber, Song Bing, Soon, Thean Siew, Sreerenj Balachandran, Stefan
-Ringel, Stephane Cerveau, Stian Selnes, Suhas Nayak, Takeshi Sato,
-Thiago Santos, Thibault Saunier, Thomas Bluemel, Tianhao Liu,
-Tim-Philipp Müller, Tobias Ronge, Tomasz Andrzejak, Tomislav Tustonić,
-U. Artie Eoff, Ulf Olsson, Varunkumar Allagadapa, Víctor Guzmán, Víctor
-Manuel Jáquez Leal, Vincenzo Bono, Vineeth T M, Vivia Nikolaidou, Wang
-Fei, wangzq, Whoopie, Wim Taymans, Wind Yuan, Wonchul Lee, Xabier
-Rodriguez Calvar, Xavier Claessens, Haihao Xiang, Yacine Bandou,
-Yeongjin Jeong, Yuji Kuwabara, Zeeshan Ali,
+- FIXME
… and many others who have contributed bug reports, translations, sent
suggestions or helped testing.
-Stable 1.16 branch
+Stable 1.18 branch
-After the 1.16.0 release there will be several 1.16.x bug-fix releases
+After the 1.18.0 release there will be several 1.18.x bug-fix releases
which will contain bug fixes which have been deemed suitable for a
stable branch, but no new features or intrusive changes will be added to
-a bug-fix release usually. The 1.16.x bug-fix releases will be made from
-the git 1.16 branch, which is a stable branch.
+a bug-fix release usually. The 1.18.x bug-fix releases will be made from
+the git 1.18 branch, which will be a stable branch.
-1.16.0
+1.18.0
-1.16.0 was released on 19 April 2019.
+1.18.0 has not been released yet.
Known Issues
-- possibly breaking/incompatible changes to properties of wrapped
- FFmpeg decoders and encoders (see above).
-
-- The way that GIO modules are named has changed due to upstream GLib
- natively adding support for loading static GIO modules. This means
- that any GStreamer application using gnutls for SSL/TLS on the
- Android or iOS platforms (or any other setup using static libraries)
- will fail to link looking for the g_io_module_gnutls_load_static()
- function. The new function name is now
- g_io_gnutls_load(gpointer data). See Android/iOS sections above for
- further details.
+- FIXME
-Schedule for 1.18
+Schedule for 1.20
-Our next major feature release will be 1.18, and 1.17 will be the
-unstable development version leading up to the stable 1.18 release. The
-development of 1.17/1.18 will happen in the git master branch.
+Our next major feature release will be 1.20, and 1.19 will be the
+unstable development version leading up to the stable 1.20 release. The
+development of 1.19/1.20 will happen in the git master branch.
-The plan for the 1.18 development cycle is yet to be confirmed, but it
-is possible that the next cycle will be a short one in which case
-feature freeze would be perhaps around August 2019 with a new 1.18
-stable release in September.
+The plan for the 1.20 development cycle is yet to be confirmed.
-1.18 will be backwards-compatible to the stable 1.16, 1.14, 1.12, 1.10,
-1.8, 1.6, 1.4, 1.2 and 1.0 release series.
+1.20 will be backwards-compatible to the stable 1.18, 1.16, 1.14, 1.12,
+1.10, 1.8, 1.6, 1.4, 1.2 and 1.0 release series.
------------------------------------------------------------------------
_These release notes have been prepared by Tim-Philipp Müller with_
-_contributions from Sebastian Dröge, Guillaume Desmottes, Matthew
-Waters, _ _Thibault Saunier, and Víctor Manuel Jáquez Leal._
+_contributions from … (FIXME)_
_License: CC BY-SA 4.0_
"properties": {
"b-qfactor": {
"blurb": "QP factor between P- and B-frames (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "1.25",
"max": "3.40282e+38",
"min": "-3.40282e+38",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"b-qoffset": {
"blurb": "QP offset between P- and B-frames (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "1.25",
"max": "3.40282e+38",
"min": "-3.40282e+38",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"b-sensitivity": {
"blurb": "adjust sensitivity of b_frame_strategy 1 (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "40",
"max": "2147483647",
"min": "1",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"b-strategy": {
"blurb": "strategy to choose between I/P/B-frames (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"bidir-refine": {
"blurb": "refine the two motion vectors used in bidirectional macroblocks (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "1",
"max": "4",
"min": "0",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"bitrate": {
"blurb": "set bitrate (in bits/s) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "200000",
"max": "2147483647",
"min": "0",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"bitrate-tolerance": {
"blurb": "Set video bitrate tolerance (in bits/s). In 1-pass mode, bitrate tolerance specifies how far ratecontrol is willing to deviate from the target average bitrate value. This is not related to minimum/maximum bitrate. Lowering tolerance too much has an adverse effect on quality. (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "4000000",
"max": "2147483647",
"min": "1",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"brd-scale": {
"blurb": "downscale frames for dynamic B-frame decision (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "10",
"min": "0",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"bufsize": {
"blurb": "set ratecontrol buffer size (in bits) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"chroma-sample-location": {
"blurb": "chroma sample location (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "unknown (0)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-chroma-sample-location-type",
"writable": true
},
"chromaoffset": {
"blurb": "chroma QP offset from luma (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"cmp": {
"blurb": "full-pel ME compare function (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "sad (0)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-cmp-func",
"writable": true
},
"coder": {
"blurb": "(null) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "vlc (0)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-coder",
"writable": true
},
"compression-level": {
"blurb": "(null) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "-1",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"context": {
"blurb": "context model (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"dark-mask": {
"blurb": "compresses dark areas stronger than medium ones (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "3.40282e+38",
"min": "-3.40282e+38",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"dc": {
"blurb": "intra_dc_precision (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "16",
"min": "-8",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"dct": {
"blurb": "DCT algorithm (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "auto (0)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-dct",
"writable": true
},
"debug": {
"blurb": "print specific debug info (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "(none)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-debug",
"writable": true
},
"dia-size": {
"blurb": "diamond type & size for motion estimation (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"dump-separator": {
"blurb": "set information dump field separator (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "NULL",
+ "mutable": "null",
"readable": true,
"type": "gchararray",
"writable": true
},
"field-order": {
"blurb": "Field order (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "unknown (0)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-field-order",
"writable": true
},
"flags": {
"blurb": "(null) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "(none)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-flags",
"writable": true
},
"flags2": {
"blurb": "(null) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "(none)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-flags2",
"writable": true
},
"global-quality": {
"blurb": "(null) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"gop-size": {
"blurb": "set the group of picture (GOP) size (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "12",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"i-qfactor": {
"blurb": "QP factor between P- and I-frames (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "-0.8",
"max": "3.40282e+38",
"min": "-3.40282e+38",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"i-qoffset": {
"blurb": "QP offset between P- and I-frames (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "3.40282e+38",
"min": "-3.40282e+38",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"idct": {
"blurb": "select IDCT implementation (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "auto (0)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-idct",
"writable": true
},
"ildctcmp": {
"blurb": "interlaced DCT compare function (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "vsad (8)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-cmp-func",
"writable": true
},
"keyint-min": {
"blurb": "minimum interval between IDR-frames (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "25",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"last-pred": {
"blurb": "amount of motion predictors from the previous frame (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"lumi-mask": {
"blurb": "compresses bright areas stronger than medium ones (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "3.40282e+38",
"min": "-3.40282e+38",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"max-bframes": {
"blurb": "set maximum number of B-frames between non-B-frames (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-1",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"max-pixels": {
"blurb": "Maximum number of pixels (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "2147483647",
"max": "2147483647",
"min": "0",
+ "mutable": "null",
"readable": true,
"type": "gint64",
"writable": true
},
"maxrate": {
"blurb": "maximum bitrate (in bits/s). Used for VBV together with bufsize. (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "0",
+ "mutable": "null",
"readable": true,
"type": "gint64",
"writable": true
},
"mbcmp": {
"blurb": "macroblock compare function (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "sad (0)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-cmp-func",
"writable": true
},
"mbd": {
"blurb": "macroblock decision algorithm (high quality mode) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "simple (0)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-mbd",
"writable": true
},
"mblmax": {
"blurb": "maximum macroblock Lagrange factor (VBR) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "3658",
"max": "32767",
"min": "1",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"mblmin": {
"blurb": "minimum macroblock Lagrange factor (VBR) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "236",
"max": "32767",
"min": "1",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"me-range": {
"blurb": "limit motion vectors range (1023 for DivX player) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"mepc": {
"blurb": "motion estimation bitrate penalty compensation (1.0 = 256) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "256",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
+ "min-force-key-unit-interval": {
+ "blurb": "Minimum interval between force-keyunit requests in nanoseconds",
+ "conditionally-available": false,
+ "construct": false,
+ "construct-only": false,
+ "controllable": false,
+ "default": "0",
+ "max": "18446744073709551615",
+ "min": "0",
+ "mutable": "null",
+ "readable": true,
+ "type": "guint64",
+ "writable": true
+ },
"minrate": {
"blurb": "minimum bitrate (in bits/s). Most useful in setting up a CBR encode. It is of little use otherwise. (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint64",
"writable": true
},
"mpeg-quant": {
"blurb": "use MPEG quantizers instead of H.263 (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"multipass-cache-file": {
"blurb": "Filename for multipass cache file",
+ "conditionally-available": false,
"construct": true,
"construct-only": false,
+ "controllable": false,
"default": "stats.log",
+ "mutable": "null",
"readable": true,
"type": "gchararray",
"writable": true
},
"mv0-threshold": {
"blurb": "(null) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "256",
"max": "2147483647",
"min": "0",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"nr": {
"blurb": "noise reduction (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"nssew": {
"blurb": "nsse weight (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "8",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"omx-libname": {
"blurb": "OpenMAX library name (Private codec option)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "NULL",
+ "mutable": "null",
"readable": true,
"type": "gchararray",
"writable": true
},
"omx-libprefix": {
"blurb": "OpenMAX library prefix (Private codec option)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "NULL",
+ "mutable": "null",
"readable": true,
"type": "gchararray",
"writable": true
},
"p-mask": {
"blurb": "inter masking (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "3.40282e+38",
"min": "-3.40282e+38",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"pass": {
"blurb": "Encoding pass/type",
+ "conditionally-available": false,
"construct": true,
"construct-only": false,
+ "controllable": false,
"default": "cbr (0)",
+ "mutable": "null",
"readable": true,
"type": "GstLibAVEncPass",
"writable": true
},
"pre-dia-size": {
"blurb": "diamond type & size for motion estimation pre-pass (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"precmp": {
"blurb": "pre motion estimation compare function (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "sad (0)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-cmp-func",
"writable": true
},
"pred": {
"blurb": "prediction method (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "left (0)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-pred",
"writable": true
},
"preme": {
"blurb": "pre motion estimation (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"profile": {
"blurb": "Set the encoding profile (Private codec option)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "unknown (-99)",
+ "mutable": "null",
"readable": true,
"type": "h264-omx-profile",
"writable": true
},
"ps": {
"blurb": "RTP payload size in bytes (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"qblur": {
"blurb": "video quantizer scale blur (VBR) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0.5",
"max": "3.40282e+38",
"min": "-1",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"qcomp": {
"blurb": "video quantizer scale compression (VBR). Constant of ratecontrol equation. Recommended range for default rc_eq: 0.0-1.0 (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0.5",
"max": "3.40282e+38",
"min": "-3.40282e+38",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"qdiff": {
"blurb": "maximum difference between the quantizer scales (VBR) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "3",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"qmax": {
"blurb": "maximum video quantizer scale (VBR) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "31",
"max": "1024",
"min": "-1",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"qmin": {
"blurb": "minimum video quantizer scale (VBR) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "2",
"max": "69",
"min": "-1",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"qos": {
"blurb": "Handle Quality-of-Service events from downstream",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "false",
+ "mutable": "null",
"readable": true,
"type": "gboolean",
"writable": true
},
"quantizer": {
"blurb": "Constant Quantizer",
+ "conditionally-available": false,
"construct": true,
"construct-only": false,
+ "controllable": false,
"default": "0.01",
"max": "30",
"min": "0",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"rc-init-occupancy": {
"blurb": "number of bits which should be loaded into the rc buffer before decoding starts (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"rc-max-vbv-use": {
"blurb": "(null) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "3.40282e+38",
"min": "0",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"rc-min-vbv-use": {
"blurb": "(null) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "3",
"max": "3.40282e+38",
"min": "0",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"refs": {
"blurb": "reference frames to consider for motion compensation (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "1",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"sc-threshold": {
"blurb": "scene change threshold (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"scplx-mask": {
"blurb": "spatial complexity masking (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "3.40282e+38",
"min": "-3.40282e+38",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"side-data-only-packets": {
"blurb": "(null) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "true",
+ "mutable": "null",
"readable": true,
"type": "gboolean",
"writable": true
},
"skip-exp": {
"blurb": "frame skip exponent (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"skip-factor": {
"blurb": "frame skip factor (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"skip-threshold": {
"blurb": "frame skip threshold (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"skipcmp": {
"blurb": "frame skip compare function (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "dctmax (13)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-cmp-func",
"writable": true
},
"slices": {
"blurb": "set the number of slices, used in parallelized encoding (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "0",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"strict": {
"blurb": "how strictly to follow the standards (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "normal (0)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-strict",
"writable": true
},
"subcmp": {
"blurb": "sub-pel ME compare function (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "sad (0)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-cmp-func",
"writable": true
},
"subq": {
"blurb": "sub-pel motion estimation quality (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "8",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"tcplx-mask": {
"blurb": "temporal complexity masking (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "3.40282e+38",
"min": "-3.40282e+38",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"thread-type": {
"blurb": "select multithreading type (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "slice+frame",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-thread-type",
"writable": true
},
"threads": {
"blurb": "set the number of threads (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "unknown (1)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-threads",
"writable": true
},
"ticks-per-frame": {
"blurb": "(null) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "1",
"max": "2147483647",
"min": "1",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"timecode-frame-start": {
"blurb": "GOP timecode frame start number, in non-drop-frame format (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "18446744073709551615",
"max": "9223372036854775807",
"min": "-1",
+ "mutable": "null",
"readable": true,
"type": "gint64",
"writable": true
},
"trellis": {
"blurb": "rate-distortion optimal quantization (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"zerocopy": {
"blurb": "Try to avoid copying input frames if possible (Private codec option)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "1",
"min": "0",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
"properties": {
"b-qfactor": {
"blurb": "QP factor between P- and B-frames (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "1.25",
"max": "3.40282e+38",
"min": "-3.40282e+38",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"b-qoffset": {
"blurb": "QP offset between P- and B-frames (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "1.25",
"max": "3.40282e+38",
"min": "-3.40282e+38",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"b-sensitivity": {
"blurb": "adjust sensitivity of b_frame_strategy 1 (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "40",
"max": "2147483647",
"min": "1",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"b-strategy": {
"blurb": "strategy to choose between I/P/B-frames (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"bidir-refine": {
"blurb": "refine the two motion vectors used in bidirectional macroblocks (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "1",
"max": "4",
"min": "0",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"bitrate": {
"blurb": "set bitrate (in bits/s) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "200000",
"max": "2147483647",
"min": "0",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"bitrate-tolerance": {
"blurb": "Set video bitrate tolerance (in bits/s). In 1-pass mode, bitrate tolerance specifies how far ratecontrol is willing to deviate from the target average bitrate value. This is not related to minimum/maximum bitrate. Lowering tolerance too much has an adverse effect on quality. (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "4000000",
"max": "2147483647",
"min": "1",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"brd-scale": {
"blurb": "downscale frames for dynamic B-frame decision (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "10",
"min": "0",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"bufsize": {
"blurb": "set ratecontrol buffer size (in bits) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"chroma-sample-location": {
"blurb": "chroma sample location (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "unknown (0)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-chroma-sample-location-type",
"writable": true
},
"chromaoffset": {
"blurb": "chroma QP offset from luma (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"chunks": {
"blurb": "chunk count (Private codec option)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "1",
"max": "64",
"min": "1",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"cmp": {
"blurb": "full-pel ME compare function (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "sad (0)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-cmp-func",
"writable": true
},
"coder": {
"blurb": "(null) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "vlc (0)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-coder",
"writable": true
},
"compression-level": {
"blurb": "(null) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "-1",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"compressor": {
"blurb": "second-stage compressor (Private codec option)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "snappy (176)",
+ "mutable": "null",
"readable": true,
"type": "hap-encoder-compressor",
"writable": true
},
"context": {
"blurb": "context model (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"dark-mask": {
"blurb": "compresses dark areas stronger than medium ones (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "3.40282e+38",
"min": "-3.40282e+38",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"dc": {
"blurb": "intra_dc_precision (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "16",
"min": "-8",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"dct": {
"blurb": "DCT algorithm (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "auto (0)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-dct",
"writable": true
},
"debug": {
"blurb": "print specific debug info (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "(none)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-debug",
"writable": true
},
"dia-size": {
"blurb": "diamond type & size for motion estimation (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"dump-separator": {
"blurb": "set information dump field separator (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "NULL",
+ "mutable": "null",
"readable": true,
"type": "gchararray",
"writable": true
},
"field-order": {
"blurb": "Field order (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "unknown (0)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-field-order",
"writable": true
},
"flags": {
"blurb": "(null) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "(none)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-flags",
"writable": true
},
"flags2": {
"blurb": "(null) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "(none)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-flags2",
"writable": true
},
"format": {
"blurb": "(null) (Private codec option)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "hap (11)",
+ "mutable": "null",
"readable": true,
"type": "hap-encoder-format",
"writable": true
},
"global-quality": {
"blurb": "(null) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"gop-size": {
"blurb": "set the group of picture (GOP) size (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "12",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"i-qfactor": {
"blurb": "QP factor between P- and I-frames (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "-0.8",
"max": "3.40282e+38",
"min": "-3.40282e+38",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"i-qoffset": {
"blurb": "QP offset between P- and I-frames (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "3.40282e+38",
"min": "-3.40282e+38",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"idct": {
"blurb": "select IDCT implementation (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "auto (0)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-idct",
"writable": true
},
"ildctcmp": {
"blurb": "interlaced DCT compare function (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "vsad (8)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-cmp-func",
"writable": true
},
"keyint-min": {
"blurb": "minimum interval between IDR-frames (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "25",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"last-pred": {
"blurb": "amount of motion predictors from the previous frame (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"lumi-mask": {
"blurb": "compresses bright areas stronger than medium ones (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "3.40282e+38",
"min": "-3.40282e+38",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"max-bframes": {
"blurb": "set maximum number of B-frames between non-B-frames (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-1",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"max-pixels": {
"blurb": "Maximum number of pixels (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "2147483647",
"max": "2147483647",
"min": "0",
+ "mutable": "null",
"readable": true,
"type": "gint64",
"writable": true
},
"maxrate": {
"blurb": "maximum bitrate (in bits/s). Used for VBV together with bufsize. (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "0",
+ "mutable": "null",
"readable": true,
"type": "gint64",
"writable": true
},
"mbcmp": {
"blurb": "macroblock compare function (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "sad (0)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-cmp-func",
"writable": true
},
"mbd": {
"blurb": "macroblock decision algorithm (high quality mode) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "simple (0)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-mbd",
"writable": true
},
"mblmax": {
"blurb": "maximum macroblock Lagrange factor (VBR) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "3658",
"max": "32767",
"min": "1",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"mblmin": {
"blurb": "minimum macroblock Lagrange factor (VBR) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "236",
"max": "32767",
"min": "1",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"me-range": {
"blurb": "limit motion vectors range (1023 for DivX player) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"mepc": {
"blurb": "motion estimation bitrate penalty compensation (1.0 = 256) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "256",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
+ "min-force-key-unit-interval": {
+ "blurb": "Minimum interval between force-keyunit requests in nanoseconds",
+ "conditionally-available": false,
+ "construct": false,
+ "construct-only": false,
+ "controllable": false,
+ "default": "0",
+ "max": "18446744073709551615",
+ "min": "0",
+ "mutable": "null",
+ "readable": true,
+ "type": "guint64",
+ "writable": true
+ },
"minrate": {
"blurb": "minimum bitrate (in bits/s). Most useful in setting up a CBR encode. It is of little use otherwise. (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint64",
"writable": true
},
"mpeg-quant": {
"blurb": "use MPEG quantizers instead of H.263 (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"multipass-cache-file": {
"blurb": "Filename for multipass cache file",
+ "conditionally-available": false,
"construct": true,
"construct-only": false,
+ "controllable": false,
"default": "stats.log",
+ "mutable": "null",
"readable": true,
"type": "gchararray",
"writable": true
},
"mv0-threshold": {
"blurb": "(null) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "256",
"max": "2147483647",
"min": "0",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"nr": {
"blurb": "noise reduction (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"nssew": {
"blurb": "nsse weight (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "8",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"p-mask": {
"blurb": "inter masking (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "3.40282e+38",
"min": "-3.40282e+38",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"pass": {
"blurb": "Encoding pass/type",
+ "conditionally-available": false,
"construct": true,
"construct-only": false,
+ "controllable": false,
"default": "cbr (0)",
+ "mutable": "null",
"readable": true,
"type": "GstLibAVEncPass",
"writable": true
},
"pre-dia-size": {
"blurb": "diamond type & size for motion estimation pre-pass (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"precmp": {
"blurb": "pre motion estimation compare function (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "sad (0)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-cmp-func",
"writable": true
},
"pred": {
"blurb": "prediction method (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "left (0)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-pred",
"writable": true
},
"preme": {
"blurb": "pre motion estimation (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"ps": {
"blurb": "RTP payload size in bytes (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"qblur": {
"blurb": "video quantizer scale blur (VBR) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0.5",
"max": "3.40282e+38",
"min": "-1",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"qcomp": {
"blurb": "video quantizer scale compression (VBR). Constant of ratecontrol equation. Recommended range for default rc_eq: 0.0-1.0 (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0.5",
"max": "3.40282e+38",
"min": "-3.40282e+38",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"qdiff": {
"blurb": "maximum difference between the quantizer scales (VBR) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "3",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"qmax": {
"blurb": "maximum video quantizer scale (VBR) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "31",
"max": "1024",
"min": "-1",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"qmin": {
"blurb": "minimum video quantizer scale (VBR) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "2",
"max": "69",
"min": "-1",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"qos": {
"blurb": "Handle Quality-of-Service events from downstream",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "false",
+ "mutable": "null",
"readable": true,
"type": "gboolean",
"writable": true
},
"quantizer": {
"blurb": "Constant Quantizer",
+ "conditionally-available": false,
"construct": true,
"construct-only": false,
+ "controllable": false,
"default": "0.01",
"max": "30",
"min": "0",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"rc-init-occupancy": {
"blurb": "number of bits which should be loaded into the rc buffer before decoding starts (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"rc-max-vbv-use": {
"blurb": "(null) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "3.40282e+38",
"min": "0",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"rc-min-vbv-use": {
"blurb": "(null) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "3",
"max": "3.40282e+38",
"min": "0",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"refs": {
"blurb": "reference frames to consider for motion compensation (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "1",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"sc-threshold": {
"blurb": "scene change threshold (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"scplx-mask": {
"blurb": "spatial complexity masking (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "3.40282e+38",
"min": "-3.40282e+38",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"side-data-only-packets": {
"blurb": "(null) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "true",
+ "mutable": "null",
"readable": true,
"type": "gboolean",
"writable": true
},
"skip-exp": {
"blurb": "frame skip exponent (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"skip-factor": {
"blurb": "frame skip factor (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"skip-threshold": {
"blurb": "frame skip threshold (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"skipcmp": {
"blurb": "frame skip compare function (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "dctmax (13)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-cmp-func",
"writable": true
},
"slices": {
"blurb": "set the number of slices, used in parallelized encoding (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "0",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"strict": {
"blurb": "how strictly to follow the standards (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "normal (0)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-strict",
"writable": true
},
"subcmp": {
"blurb": "sub-pel ME compare function (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "sad (0)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-cmp-func",
"writable": true
},
"subq": {
"blurb": "sub-pel motion estimation quality (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "8",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"tcplx-mask": {
"blurb": "temporal complexity masking (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "3.40282e+38",
"min": "-3.40282e+38",
+ "mutable": "null",
"readable": true,
"type": "gfloat",
"writable": true
},
"thread-type": {
"blurb": "select multithreading type (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "slice+frame",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-thread-type",
"writable": true
},
"threads": {
"blurb": "set the number of threads (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "unknown (1)",
+ "mutable": "null",
"readable": true,
"type": "avcodeccontext-threads",
"writable": true
},
"ticks-per-frame": {
"blurb": "(null) (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "1",
"max": "2147483647",
"min": "1",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"timecode-frame-start": {
"blurb": "GOP timecode frame start number, in non-drop-frame format (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "18446744073709551615",
"max": "9223372036854775807",
"min": "-1",
+ "mutable": "null",
"readable": true,
"type": "gint64",
"writable": true
},
"trellis": {
"blurb": "rate-distortion optimal quantization (Generic codec option, might have no effect)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "-2147483648",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
"properties": {
"maxdelay": {
"blurb": "Set the maximum demux-decode delay (in microseconds)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "0",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
},
"preload": {
"blurb": "Set the initial demux-decode delay (in microseconds)",
+ "conditionally-available": false,
"construct": false,
"construct-only": false,
+ "controllable": false,
"default": "0",
"max": "2147483647",
"min": "0",
+ "mutable": "null",
"readable": true,
"type": "gint",
"writable": true
]
}
},
- "package": "GStreamer FFMPEG Plug-ins git",
+ "package": "GStreamer FFMPEG Plug-ins",
"source": "gst-libav",
"tracers": {},
"url": "Unknown package origin"
projects / platform / upstream / gstreamer.git / commitdiff