1 This is GStreamer Base Plugins 1.2.0
6 • GstContext negotiation / sharing / announcing for sharing a
7 generic context between elements, e.g. a display handle
8 • GL texture upload conversion meta for allowing different
9 buffer types to be converted to an OpenGL texture
10 • GstCapsFeatures as extension to GstCaps for allowing the
11 negotiation of specific memory or meta requirements between
13 • GstMemory flags for contiguous and non-mappable memory
14 • The stream-start event has optional flags now, e.g. for signalling
16 • The stream-start even has an optional group-id field now to signal
17 all streams that should be played together
18 • Allocators library in gst-plugins-base, currently only with generic
20 • insertbin library for easier handling of dynamically linked
21 pipelines (in -bad for now)
22 • EGL helper library (in -bad for now)
23 • MPEG-TS data structure library (in -bad for now)
24 • New GstVideoRegionOfInterestMeta to describe a region of interest on
26 • GstVideoDecoder/Encoder has new ::flush() vfunc to replace the
27 ill-defined ::reset() vfunc.
28 • The URI query allows to query the redirected URI now.
31 • New tool: gst-play-1.0 in gst-plugins-base for basic playback
32 testing on the command line.
34 ∘ mssdemux for Microsoft Smooth Streaming
35 ∘ dashdemux for DASH adaptive streaming protocol
36 ∘ bluez for interaction with Bluetooth devices
37 ∘ openjpeg for JPEG2000 decoding and encoding
38 ∘ daala for experimental Daala decoding and encoding
39 ∘ vpx plugin has experimental VP9 decoding and encoding support
40 ∘ webp plugin for WebP decoding (encoding to be added later)
41 ∘ Various others: yadif, srtp, sbc, fluidsynth, midiparse,
42 mfc, ivtv, accuraterip and audiofxbad
45 ∘ dtmf, vp8rtp, scaletempo and rtpmux plugins are in
49 ∘ Fix handling of interlaced video in converters such as videoscale
50 and videoconvert (e.g. scale both fields independently)
51 ∘ videoconvert will try harder to minimise quality losses when
52 conversion is necessary
53 ∘ The experimental GstSurfaceConverter, GstSurfaceMeta and
54 GstVideoContext APIs from the (confusingly-named)
55 libgstbasevideo-1.0 library in gst-plugins-bad have now been
56 removed and been replaced by new APIs in GStreamer Core and
57 gst-plugins-base (see above). Since that was all that was left in
58 this library, the entire experimental libgstbasevideo-1.0 library
59 has been removed from gst-plugins-bad
60 ∘ Chroma subsampling and chroma siting conversion is better handled
61 in videoconvert and the support for interlaced video was improved.
62 ∘ New pinwheel and spoke patterns in videotestsrc
63 ∘ videomixer can now accept different video formats on its sinkpads
64 and converts to a common format during mixing
67 ∘ audioconvert will try harder to minimise quality losses when
68 conversion is necessary
69 ∘ adder now allows muting/unmuting of its input streams, and also
70 per-input stream volume
71 ∘ pulseaudio elements can switch between devices during playback now
72 ∘ aacparse can convert between ADTS←→RAW
74 • Platform specific changes:
75 ∘ Caps, events, etc. are now printed in the GStreamer debug logs
76 with their content instead of just the pointer address even on
77 non-glibc platforms (e.g. Windows, OSX, Android).
78 ∘ Network elements (UDP/TCP) now work better with platforms,
79 where IPv6 sockets can't handle IPv4 (e.g. Windows)
80 ∘ Linux/BSD: v4l2 had many improvements and cleanups
83 ∘ gst-libav now uses libav 9
84 ∘ Static linking of plugins is supported now (also in 1.0.7)
85 ∘ rtspsrc: add support for NetClientClock: when the server suggests a
86 GstNetTimeProvider in the SDP, set up a GstNetClientClock that
87 slaves to the remote clock and suggest this clock in provide_clock.
88 Simplifies synchronized playback of a resource from an RTSP server.
89 gst-rtsp-server now supports adding this to the SDP and can provide
91 ∘ RTP retransmission / NACK support and big RTP jitterbuffer improvements
92 ∘ SRTP and DTLS support
93 ∘ Changes to many elements and core to use the correct sticky event
94 order and also not lose any important sticky events during flushing
95 ∘ >1000 fixed bug reports, and many other bug fixes and other
96 improvements everywhere that had no bug report
98 Things to look out for:
99 • Single header includes for all libraries, e.g. #include
100 <gst/video/video.h> - this was needed for some bindings.
101 • Stricter (correct) caps subset checking in some cases where this was
102 not correct before. Caps will now always fail to be a compatible
103 subset of another set of caps if the subset caps are missing some
104 fields that the superset caps have. This might lead to not-negotiated
105 errors if caps are incomplete now. However, it also prevents possible
106 data corruption caused by piping data formatted in an
107 incompatible/unexpected way into some elements. Check your h264 caps
108 for stream-format and alignment fields and AAC caps for the
109 stream-format field. This change will also be included in the next
110 stable 1.0.8 release.
111 • Stricter checking for missing events and correct sticky event order
112 (stream-start, caps, segment) in some places; this is not enabled in
113 stable releases by default, but you may get warnings when using git
114 builds, development releases or when compiling with
115 -UG_DISABLE_ASSERT in CFLAGS
116 • x264enc now outputs data in byte-stream by default if downstream has
117 ANY caps (e.g. appsink without caps set, filesink, udpsink,
119 • The MPEG TS demuxer posts messages contain the PMT, PAT, etc. in a
120 different format now. This new format uses the data structures from
121 the new MPEGTS library
122 • The GstContext API has changed between 1.1.4 and 1.1.90