1 Entries are sorted chronologically from oldest to youngest within each release,
2 releases are sorted from youngest to oldest.
7 - replaygain data export
8 - Alias PIX image encoder and decoder
9 - BRender PIX image decoder
10 - Amazing Studio PAF playback support
15 - support ID3v2 tags in ASF files
16 - reference-counting for AVFrame and AVPacket data
17 - avconv now fails when input options are used for output file
19 - avconv options -filter_script and -filter_complex_script, which allow a
20 filtergraph description to be read from a file
21 - uniform options syntax across all filters
24 - asetpts filter (same as setpts, but for audio)
25 - trim and atrim filters
26 - avconv -t and -ss (output-only) options are now sample-accurate when
28 - Matroska muxer can now put the index at the beginning of the file.
29 - avconv -deinterlace option removed, the yadif filter should be used instead
30 - Apple Intermediate Codec decoder
31 - Escape 130 video decoder
32 - support for slice multithreading in libavfilter
33 - VC-1 interlaced B-frame support
34 - support for WavPack muxing (raw and in Matroska)
36 - WavPack encoding through libwavpack
37 - Added the -n parameter to avconv
39 - when transcoding with avconv (i.e. not streamcopying), -ss is now accurate
40 even when used as an input option. Previous behavior can be restored with
41 the -noaccurate_seek option.
42 - avconv -t option can now be used for inputs, to limit the duration of
43 data read from an input file
44 - Voxware MetaSound decoder
46 - Error Resilient AAC syntax (ER AAC LC) decoding
47 - Low Delay AAC (ER AAC LD) decoding
48 - mux chapters in ASF files
49 - Opus in Ogg demuxing
50 - Enhanced Low Delay AAC (ER AAC ELD) decoding (no LD SBR support)
52 - HNM version 4 demuxer and video decoder
54 - raw HEVC, HEVC in MOV/MP4, HEVC in Matroska, HEVC in MPEG-TS demuxing
55 - remove avplay -vismv option, which has not worked for a long time
57 - setsar/setdar filters now support variables in ratio expressions
58 - dar variable in the scale filter now returns the actual DAR (i.e. a * sar)
60 - support for decoding through VDPAU in avconv (the -hwaccel option)
61 - remove mp3_header_(de)compress bitstream filters
62 - stereoscopic 3d metadata handling
63 - png standalone parser
64 - WebP encoding via libwebp
67 - Mirillis FIC video decoder
69 - compand audio filter
73 - av_basename and av_dirname
74 - adobe and limelight publisher authentication in RTMP
75 - VDPAU hardware acceleration through normal hwaccel
80 - ashowinfo audio filter
81 - 24-bit FLAC encoding
83 - deprecated the avconv -vol option. the volume filter is to be used instead.
84 - multi-channel ALAC encoding up to 7.1
85 - TAK demuxer, parser, and decoder
86 - adaptive frame-level multithreading for H.264
90 - metadata (INFO tag) support in WAV muxer
91 - support for building DLLs using MSVC
92 - remove avserver daemon mode
93 - support building on the Plan 9 operating system
94 - ffv1: support version 1.3
99 - XWD encoder and decoder
100 - Support for fragmentation in the mov/mp4 muxer
101 - ISMV (Smooth Streaming) muxer
102 - CDXL demuxer and decoder
103 - Apple ProRes encoder
104 - Sun Rasterfile Encoder
106 - ID3v2 attached pictures reading and writing
107 - WMA Lossless decoder
109 - RealAudio Lossless decoder
111 - drop support for avconv without libavfilter
112 - add libavresample audio conversion library
113 - audio filters support in libavfilter and avconv
117 - avprobe output is now standard INI or JSON. The old format can still
118 be used with -of old.
119 - Indeo Audio decoder
120 - channelsplit audio filter
121 - RTMPT protocol support
122 - iLBC encoding/decoding via libilbc
123 - Microsoft Screen 1 decoder
125 - audio channel mapping filter
126 - Microsoft ATC Screen decoder
128 - TechSmith Screen Codec 2 decoder
129 - AAC encoding via libfdk-aac
130 - Microsoft Expression Encoder Screen decoder
131 - RTMPS protocol support
132 - RTMPTS protocol support
133 - JPEG 2000 encoding support through OpenJPEG
134 - G.723.1 demuxer and decoder
135 - RTMPE protocol support
136 - RTMPTE protocol support
137 - Canopus Lossless Codec decoder
138 - avconv -shortest option is now per-output file,
139 -pass and -passlogfile are now per-output stream
141 - Microsoft Screen 2 decoder
142 - RTP depacketization of JPEG
143 - Smooth Streaming live segmenter muxer
144 - RTP packetization of JPEG
145 - Opus decoder and encoder using libopus
146 - remove -same_quant, it hasn't worked for years
147 - support for building with MSVC
158 - Automatic thread count based on detection number of (available) CPU cores
159 - Deprecate libpostproc. If desired, the switch --enable-postproc will
160 enable it but it may be removed in a later Libav release.
161 - rv34: frame-level multi-threading
162 - optimized iMDCT transform on x86 using SSE for for mpegaudiodec
168 - Flash Screen Video 2 decoder
169 - ffplay/ffprobe/ffserver renamed to avplay/avprobe/avserver
170 - ffmpeg deprecated, added avconv, which is almost the same for now, except
171 for a few incompatible changes in the options, which will hopefully make them
172 easier to use. The changes are:
173 * The options placement is now strictly enforced! While in theory the
174 options for ffmpeg should be given in [input options] -i INPUT [output
175 options] OUTPUT order, in practice it was possible to give output options
176 before the -i and it mostly worked. Except when it didn't - the behavior was
177 a bit inconsistent. In avconv, it is not possible to mix input and output
178 options. All non-global options are reset after an input or output filename.
179 * All per-file options are now truly per-file - they apply only to the next
180 input or output file and specifying different values for different files
181 will now work properly (notably -ss and -t options).
182 * All per-stream options are now truly per-stream - it is possible to
183 specify which stream(s) should a given option apply to. See the Stream
184 specifiers section in the avconv manual for details.
185 * In ffmpeg some options (like -newvideo/-newaudio/...) are irregular in the
186 sense that they're specified after the output filename instead of before,
187 like all other options. In avconv this irregularity is removed, all options
188 apply to the next input or output file.
189 * -newvideo/-newaudio/-newsubtitle options were removed. Not only were they
190 irregular and highly confusing, they were also redundant. In avconv the -map
191 option will create new streams in the output file and map input streams to
192 them. E.g. avconv -i INPUT -map 0 OUTPUT will create an output stream for
193 each stream in the first input file.
194 * The -map option now has slightly different and more powerful syntax:
195 + Colons (':') are used to separate file index/stream type/stream index
196 instead of dots. Comma (',') is used to separate the sync stream instead
197 of colon.. This is done for consistency with other options.
198 + It's possible to specify stream type. E.g. -map 0:a:2 creates an
199 output stream from the third input audio stream.
200 + Omitting the stream index now maps all the streams of the given type,
201 not just the first. E.g. -map 0:s creates output streams for all the
202 subtitle streams in the first input file.
203 + Since -map can now match multiple streams, negative mappings were
204 introduced. Negative mappings disable some streams from an already
205 defined map. E.g. '-map 0 -map -0:a:1' means 'create output streams for
206 all the stream in the first input file, except for the second audio
208 * There is a new option -c (or -codec) for choosing the decoder/encoder to
209 use, which allows to precisely specify target stream(s) consistently with
210 other options. E.g. -c:v lib264 sets the codec for all video streams, -c:a:0
211 libvorbis sets the codec for the first audio stream and -c copy copies all
212 the streams without reencoding. Old -vcodec/-acodec/-scodec options are now
214 * It is now possible to precisely specify which stream should an AVOption
215 apply to. E.g. -b:v:0 2M sets the bitrate for the first video stream, while
216 -b:a 128k sets the bitrate for all audio streams. Note that the old -ab 128k
217 syntax is deprecated and will stop working soon.
218 * -map_chapters now takes only an input file index and applies to the next
219 output file. This is consistent with how all the other options work.
220 * -map_metadata now takes only an input metadata specifier and applies to
221 the next output file. Output metadata specifier is now part of the option
222 name, similarly to the AVOptions/map/codec feature above.
223 * -metadata can now be used to set metadata on streams and chapters, e.g.
224 -metadata:s:1 language=eng sets the language of the first stream to 'eng'.
225 This made -vlang/-alang/-slang options redundant, so they were removed.
226 * -qscale option now uses stream specifiers and applies to all streams, not
227 just video. I.e. plain -qscale number would now apply to all streams. To get
228 the old behavior, use -qscale:v. Also there is now a shortcut -q for -qscale
229 and -aq is now an alias for -q:a.
230 * -vbsf/-absf/-sbsf options were removed and replaced by a -bsf option which
231 uses stream specifiers. Use -bsf:v/a/s instead of the old options.
232 * -itsscale option now uses stream specifiers, so its argument is only the
234 * -intra option was removed, use -g 0 for the same effect.
235 * -psnr option was removed, use -flags +psnr for the same effect.
236 * -vf option is now an alias to the new -filter option, which uses stream specifiers.
237 * -vframes/-aframes/-dframes options are now aliases to the new -frames option.
238 * -vtag/-atag/-stag options are now aliases to the new -tag option.
240 - Windows Media Image decoder
244 - libcdio-paranoia input device for audio CD grabbing
246 - Apple ProRes decoder
247 - CELT in Ogg demuxing
248 - VC-1 interlaced decoding
249 - lut, lutrgb, and lutyuv filters
252 - Speex encoding via libspeex
253 - 4:2:2 H.264 decoding support
254 - 4:2:2 and 4:4:4 H.264 encoding with libx264
255 - Pulseaudio input device
256 - replacement Indeo 3 decoder
257 - TLS/SSL and HTTPS protocol support
258 - AVOptions API rewritten and documented
259 - most of CODEC_FLAG2_*, some CODEC_FLAG_* and many codec-specific fields in
260 AVCodecContext deprecated. Codec private options should be used instead.
261 - Properly working defaults in libx264 wrapper, support for native presets.
262 - Encrypted OMA files support
263 - Discworld II BMV decoding support
265 - OS X Video Decoder Acceleration (VDA) support
266 - CRI ADX audio format muxer and demuxer
267 - Playstation Portable PMP format demuxer
268 - PCM format support in OMA demuxer
270 - Dxtory capture format decoder
271 - v410 QuickTime uncompressed 4:4:4 10-bit encoder and decoder
273 - Simple segmenting muxer
280 - E-AC-3 audio encoder
281 - ac3enc: add channel coupling support
282 - floating-point sample format support for (E-)AC-3, DCA, AAC, Vorbis decoders
283 - H.264/MPEG frame-level multithreading
284 - av_metadata_* functions renamed to av_dict_* and moved to libavutil
285 - 4:4:4 H.264 decoding support
286 - 10-bit H.264 optimizations for x86
287 - bump libswscale for recently reported ABI break
292 - VP8 frame-level multithreading
293 - NEON optimizations for VP8
294 - removed a lot of deprecated API cruft
295 - FFT and IMDCT optimizations for AVX (Sandy Bridge) processors
297 - SMPTE 302M AES3 audio decoder
298 - ffmpeg no longer quits after the 'q' key is pressed; use 'ctrl+c' instead
299 - 9bit and 10bit per sample support in the H.264 decoder
304 - WebM support in Matroska de/muxer
305 - low overhead Ogg muxing
307 - VP8 de/encoding via libvpx
308 - Demuxer for On2's IVF format
309 - Pictor/PC Paint decoder
311 - libfaad2 wrapper removed
312 - DTS-ES extension (XCh) decoding support
314 - RTSP tunneling over HTTP
315 - RTP depacketization of SVQ3
316 - -strict inofficial replaced by -strict unofficial
317 - ffplay -exitonkeydown and -exitonmousedown options added
318 - native GSM / GSM MS decoder
319 - RTP depacketization of QDM2
320 - ANSI/ASCII art playback system
321 - Lego Mindstorms RSO de/muxer
322 - SubRip subtitle file muxer and demuxer
323 - Chinese AVS encoding via libxavs
324 - ffprobe -show_packets option added
325 - RTP packetization of Theora and Vorbis
326 - RTP depacketization of MP4A-LATM
327 - RTP packetization and depacketization of VP8
329 - Apple HTTP Live Streaming demuxer
332 - G.722 ADPCM audio encoder/decoder
335 - frei0r wrapper filter
336 - change crop filter syntax to width:height:x:y
337 - make the crop filter accept parametric expressions
338 - make ffprobe accept AVFormatContext options
341 - Demuxer for Leitch/Harris' VR native stream format (LXF)
342 - RTP depacketization of the X-QT QuickTime format
343 - SAP (Session Announcement Protocol, RFC 2974) muxer and demuxer
345 - ffmpeg -crop* options removed
346 - transpose filter added
347 - ffmpeg -force_key_frames option added
348 - demuxer for receiving raw rtp:// URLs without an SDP description
349 - single stream LATM/LOAS decoder
350 - setpts filter added
351 - Win64 support for optimized x86 assembly functions
352 - MJPEG/AVI1 to JPEG/JFIF bitstream filter
353 - ASS subtitle encoder and decoder
354 - IEC 61937 encapsulation for E-AC-3, TrueHD, DTS-HD (for HDMI passthrough)
355 - overlay filter added
356 - rename aspect filter to setdar, and pixelaspect to setsar
358 - Mobotix .mxg demuxer
359 - frei0r source added
360 - hqdn3d filter added
361 - RTP depacketization of QCELP
363 - gradfun filter added
365 - replace the ocv_smooth filter with a more generic ocv filter
366 - Windows Televison (WTV) demuxer
367 - FFmpeg metadata format muxer and demuxer
368 - SubRip (srt) subtitle decoder
369 - floating-point AC-3 encoder added
371 - ffmpeg -copytb option added
373 - Wing Commander IV movies decoder added
375 - Bink version 'b' audio and video decoder
376 - Bitmap Brothers JV playback system
377 - Apple HTTP Live Streaming protocol handler
378 - sndio support for playback and record
379 - Linux framebuffer input device added
380 - Chronomaster DFA decoder
381 - Mobotix MxPEG decoder
382 - AAC encoding via libvo-aacenc
383 - AMR-WB encoding via libvo-amrwbenc
385 - fieldorder video filter added
390 - PB-frame decoding for H.263
391 - deprecated vhook subsystem removed
392 - deprecated old scaler removed
394 - Alpha channel scaler
396 - RTP packetization of H.263
397 - RTP packetization of AMR
398 - RTP depacketization of Vorbis
399 - CorePNG decoding support
400 - Cook multichannel decoding support
401 - introduced avlanguage helpers in libavformat
402 - 8088flex TMV demuxer and decoder
403 - per-stream language-tags extraction in asfdec
404 - V210 decoder and encoder
405 - remaining GPL parts in AC-3 decoder converted to LGPL
407 - SoX native format muxer and demuxer
408 - AMR-NB decoding/encoding, AMR-WB decoding via OpenCORE libraries
410 - Electronic Arts Madcow decoder
411 - DivX (XSUB) subtitle encoder
412 - nonfree libamr support for AMR-NB/WB decoding/encoding removed
413 - experimental AAC encoder
414 - RTP depacketization of ASF and RTSP from WMS servers
415 - RTMP support in libavformat
416 - noX handling for OPT_BOOL X options
418 - IEC-61937 compatible Muxer
420 - Bluray (PGS) subtitle decoder
421 - LPCM support in MPEG-TS (HDMV RID as found on Blu-ray disks)
423 - Core Audio Format demuxer
425 - MD STUDIO audio demuxer
426 - RF64 support in WAV demuxer
427 - MPEG-4 Audio Lossless Coding (ALS) decoder
428 - -formats option split into -formats, -codecs, -bsfs, and -protocols
430 - CDG demuxer and decoder
432 - Auravision Aura 1 and 2 decoders
433 - Deluxe Paint Animation playback system
435 - Adobe Filmstrip muxer and demuxer
436 - RTP depacketization of H.263
437 - Bink demuxer and audio/video decoders
438 - enable symbol versioning by default for linkers that support it
439 - IFF PBM/ILBM bitmap decoder
442 - RTP depacketization of AMR
448 - Kega Game Video (KGV1) decoder
449 - VorbisComment writing for FLAC, Ogg FLAC and Ogg Speex files
450 - RTP depacketization of Theora
451 - HTTP Digest authentication
452 - RTMP/RTMPT/RTMPS/RTMPE/RTMPTE protocol support via librtmp
453 - Psygnosis YOP demuxer and video decoder
454 - spectral extension support in the E-AC-3 decoder
455 - unsharp video filter
456 - RTP hinting in the mov/3gp/mp4 muxer
457 - Dirac in Ogg demuxing
458 - seek to keyframes in Ogg
459 - 4:2:2 and 4:4:4 Theora decoding
460 - 35% faster VP3/Theora decoding
461 - faster AAC decoding
462 - faster H.264 decoding
463 - RealAudio 1.0 (14.4K) encoder
468 - DV50 AKA DVCPRO50 encoder, decoder, muxer and demuxer
469 - TechSmith Camtasia (TSCC) video decoder
470 - IBM Ultimotion (ULTI) video decoder
471 - Sierra Online audio file demuxer and decoder
472 - Apple QuickDraw (qdrw) video decoder
473 - Creative ADPCM audio decoder (16 bits as well as 8 bits schemes)
474 - Electronic Arts Multimedia (WVE/UV2/etc.) file demuxer
475 - Miro VideoXL (VIXL) video decoder
476 - H.261 video encoder
478 - Nullsoft Video (NSV) file demuxer
479 - Shorten audio decoder
481 - Apple Lossless Audio Codec (ALAC) decoder
482 - Winnov WNV1 video decoder
483 - Autodesk Animator Studio Codec (AASC) decoder
484 - Indeo 2 video decoder
485 - Fraps FPS1 video decoder
486 - Snow video encoder/decoder
487 - Sonic audio encoder/decoder
488 - Vorbis audio decoder
489 - Macromedia ADPCM decoder
490 - Duck TrueMotion 2 video decoder
491 - support for decoding FLX and DTA extensions in FLIC files
492 - H.264 custom quantization matrices support
493 - ffserver fixed, it should now be usable again
495 - Real Cooker audio decoder
496 - TrueSpeech audio decoder
497 - WMA2 audio decoder fixed, now all files should play correctly
498 - RealAudio 14.4 and 28.8 decoders fixed
500 - build system improvements
501 - tabs and trailing whitespace removed from the codebase
502 - CamStudio video decoder
503 - AIFF/AIFF-C audio format, encoding and decoding
504 - ADTS AAC file reading and writing
505 - Creative VOC file reading and writing
506 - American Laser Games multimedia (*.mm) playback system
507 - Zip Motion Blocks Video decoder
508 - improved Theora/VP3 decoder
509 - True Audio (TTA) decoder
510 - AVS demuxer and video decoder
512 - Smacker demuxer and decoder
513 - NuppelVideo/MythTV demuxer and RTjpeg decoder
515 - MPEG-2 intra VLC support
516 - MPEG-2 4:2:2 encoder
517 - Flash Screen Video decoder
519 - Chinese AVS decoder
522 - VC-1/WMV3/WMV9 video decoder
525 - VMware video decoder
528 - WavPack lossless audio decoder
529 - Targa (.TGA) picture decoder
530 - Vorbis audio encoder
531 - Delphine Software .cin demuxer/audio and video decoder
532 - Tiertex .seq demuxer/video decoder
534 - TIFF picture encoder and decoder
535 - GIF picture decoder
536 - Intel Music Coder decoder
537 - Zip Motion Blocks Video encoder
539 - Flash Screen Video encoder
540 - Theora encoding via libtheora
543 - GSM-MS encoder and decoder
545 - DXA demuxer and decoder
547 - Gamecube movie (.THP) playback system
548 - Blackfin optimizations
549 - Interplay C93 demuxer and video decoder
550 - Bethsoft VID demuxer and video decoder
553 - V.Flash PTX decoder
554 - RoQ muxer, RoQ audio encoder
555 - Renderware TXD demuxer and decoder
556 - extern C declarations for C++ removed from headers
557 - sws_flags command line option
561 - OS/2 support removed and restored again
564 - additional SPARC (VIS) optimizations
566 - slice-based parallel H.264 decoding
567 - Monkey's Audio demuxer and decoder
568 - AMV audio and video decoder
570 - H.264 PAFF decoding
571 - Nellymoser ASAO decoder
572 - Beam Software SIFF demuxer and decoder
573 - libvorbis Vorbis decoding removed in favor of native decoder
574 - IntraX8 (J-Frame) subdecoder for WMV2 and VC-1
575 - Ogg (Theora, Vorbis and FLAC) muxer
576 - The "device" muxers and demuxers are now in a new libavdevice library
577 - PC Paintbrush PCX decoder
578 - Sun Rasterfile decoder
579 - TechnoTrend PVA demuxer
580 - Linux Media Labs MPEG-4 (LMLM4) demuxer
581 - AVM2 (Flash 9) SWF muxer
582 - QT variant of IMA ADPCM encoder
584 - iPod/iPhone compatible mp4 muxer
586 - MSN TCP Webcam stream demuxer
587 - RL2 demuxer / decoder
590 - non-recursive Makefiles
592 - MAXIS EA XA (.xa) demuxer / decoder
596 - Electronic Arts CMV decoder
597 - Motion Pixels Video decoder
598 - Motion Pixels MVI demuxer
599 - removed animated GIF decoder/demuxer
600 - D-Cinema audio muxer
601 - Electronic Arts TGV decoder
602 - Apple Lossless Audio Codec (ALAC) encoder
604 - floating point PCM encoder/decoder
606 - DV100 AKA DVCPRO HD decoder and demuxer
607 - E-AC-3 support added to AC-3 decoder
608 - Nellymoser ASAO encoder
609 - ASS and SSA demuxer and muxer
610 - liba52 wrapper removed
611 - SVQ3 watermark decoding support
612 - Speex decoding via libspeex
613 - Electronic Arts TGQ decoder
615 - QCELP / PureVoice decoder
617 - hybrid WavPack support
618 - R3D REDCODE demuxer
619 - ALSA support for playback and record
620 - Electronic Arts TQI decoder
621 - OpenJPEG based JPEG 2000 decoder
622 - NC (NC4600) camera file demuxer
623 - Gopher client support
625 - generic metadata API
630 - DV encoder, DV muxer
631 - Microsoft RLE video decoder
632 - Microsoft Video-1 decoder
633 - Apple Animation (RLE) decoder
634 - Apple Graphics (SMC) decoder
635 - Apple Video (RPZA) decoder
637 - Sega FILM (CPK) file demuxer
638 - Westwood multimedia support (VQA & AUD files)
639 - Id Quake II CIN playback support
641 - FLIC playback support
642 - RealVideo 2.0 (RV20) decoder
643 - Duck TrueMotion v1 (DUCK) video decoder
644 - Sierra VMD demuxer and video decoder
645 - MSZH and ZLIB decoder support
649 - rate distortion optimal cbp support
650 - rate distorted optimal ac prediction for MPEG-4
651 - rate distorted optimal lambda->qp support
652 - AAC encoding with libfaac
653 - Sunplus JPEG codec (SP5X) support
654 - use Lagrange multipler instead of QP for ratecontrol
655 - Theora/VP3 decoding support
656 - XA and ADX ADPCM codecs
657 - export MPEG-2 active display area / pan scan
658 - Add support for configuring with IBM XLC
659 - floating point AAN DCT
660 - initial support for zygo video (not complete)
662 - new audio/video parser API
664 - av_read_frame() and av_seek_frame() support
665 - missing last frame fixes
666 - seek by mouse in ffplay
667 - noise reduction of DCT coefficients
668 - H.263 OBMC & 4MV support
669 - H.263 alternative inter vlc support
671 - H.263 slice structured mode
672 - interlaced DCT support for MPEG-2 encoding
673 - stuffing to stay above min_bitrate
674 - MB type & QP visualization
675 - frame stepping for ffplay
676 - interlaced motion estimation
677 - alternate scantable support
678 - SVCD scan offset support
681 - quantizer noise shaping
682 - G.726 ADPCM audio codec
684 - multithreaded/SMP motion estimation
685 - multithreaded/SMP encoding for MPEG-1/MPEG-2/MPEG-4/H.263
686 - multithreaded/SMP decoding for MPEG-2
688 - Metrowerks CodeWarrior suppport
689 - H.263+ custom pcf support
690 - nicer output for 'ffmpeg -formats'
692 - SGI image format, encoding and decoding
693 - H.264 loop filter support
694 - H.264 CABAC support
695 - nicer looking arrows for the motion vector visualization
696 - improved VCD support
697 - audio timestamp drift compensation
698 - MPEG-2 YUV 422/444 support
699 - polyphase kaiser windowed sinc and blackman nuttall windowed sinc audio resample
700 - better image scaling
702 - correctly interleave packets during encoding
703 - VIS optimized motion compensation
704 - intra_dc_precision>0 encoding support
705 - support reuse of motion vectors/MB types/field select values of the source video
706 - more accurate deblock filter
708 - many optimizations and bugfixes
709 - FunCom ISS audio file demuxer and according ADPCM decoding
714 - MPEG-2 video encoding (Michael)
715 - Id RoQ playback subsystem (Mike Melanson and Tim Ferguson)
716 - Wing Commander III Movie (.mve) file playback subsystem (Mike Melanson
718 - Xan DPCM audio decoder (Mario Brito)
719 - Interplay MVE playback subsystem (Mike Melanson)
720 - Duck DK3 and DK4 ADPCM audio decoders (Mike Melanson)
725 - RealAudio 1.0 (14_4) and 2.0 (28_8) native decoders. Author unknown, code from mplayerhq
726 (originally from public domain player for Amiga at http://www.honeypot.net/audio)
727 - current version now also compiles with older GCC (Fabrice)
728 - 4X multimedia playback system including 4xm file demuxer (Mike
729 Melanson), and 4X video and audio codecs (Michael)
730 - Creative YUV (CYUV) decoder (Mike Melanson)
731 - FFV1 codec (our very simple lossless intra only codec, compresses much better
732 than HuffYUV) (Michael)
733 - ASV1 (Asus), H.264, Intel indeo3 codecs have been added (various)
734 - tiny PNG encoder and decoder, tiny GIF decoder, PAM decoder (PPM with
735 alpha support), JPEG YUV colorspace support. (Fabrice Bellard)
736 - ffplay has been replaced with a newer version which uses SDL (optionally)
737 for multiplatform support (Fabrice)
738 - Sorenson Version 3 codec (SVQ3) support has been added (decoding only) - donated
740 - AMR format has been added (Johannes Carlsson)
741 - 3GP support has been added (Johannes Carlsson)
742 - VP3 codec has been added (Mike Melanson)
743 - more MPEG-1/2 fixes
744 - better multiplatform support, MS Visual Studio fixes (various)
745 - AltiVec optimizations (Magnus Damn and others)
746 - SH4 processor support has been added (BERO)
747 - new public interfaces (avcodec_get_pix_fmt) (Roman Shaposhnick)
748 - VOB streaming support (Brian Foley)
749 - better MP3 autodetection (Andriy Rysin)
750 - qpel encoding (Michael)
751 - 4mv+b frames encoding finally fixed (Michael)
752 - chroma ME (Michael)
753 - 5 comparison functions for ME (Michael)
754 - B-frame encoding speedup (Michael)
755 - WMV2 codec (unfinished - Michael)
756 - user specified diamond size for EPZS (Michael)
757 - Playstation STR playback subsystem, still experimental (Mike and Michael)
758 - ASV2 codec (Michael)
759 - CLJR decoder (Alex)
761 .. And lots more new enhancements and fixes.
766 - completely new integer only MPEG audio layer 1/2/3 decoder rewritten
768 - Recoded DCT and motion vector search with gcc (no longer depends on nasm)
769 - fix quantization bug in AC3 encoder
770 - added PCM codecs and format. Corrected WAV/AVI/ASF PCM issues
771 - added prototype ffplay program
772 - added GOB header parsing on H.263/H.263+ decoder (Juanjo)
773 - bug fix on MCBPC tables of H.263 (Juanjo)
774 - bug fix on DC coefficients of H.263 (Juanjo)
775 - added Advanced Prediction Mode on H.263/H.263+ decoder (Juanjo)
776 - now we can decode H.263 streams found in QuickTime files (Juanjo)
777 - now we can decode H.263 streams found in VIVO v1 files(Juanjo)
778 - preliminary RTP "friendly" mode for H.263/H.263+ coding. (Juanjo)
779 - added GOB header for H.263/H.263+ coding on RTP mode (Juanjo)
780 - now H.263 picture size is returned on the first decoded frame (Juanjo)
781 - added first regression tests
782 - added MPEG-2 TS demuxer
783 - new demux API for libav
784 - more accurate and faster IDCT (Michael)
785 - faster and entropy-controlled motion search (Michael)
786 - two pass video encoding (Michael)
787 - new video rate control (Michael)
788 - added MSMPEG4V1, MSMPEGV2 and WMV1 support (Michael)
789 - great performance improvement of video encoders and decoders (Michael)
790 - new and faster bit readers and vlc parsers (Michael)
791 - high quality encoding mode: tries all macroblock/VLC types (Michael)
792 - added DV video decoder
793 - preliminary RTP/RTSP support in ffserver and libavformat
794 - H.263+ AIC decoding/encoding support (Juanjo)
795 - VCD MPEG-PS mode (Juanjo)
796 - PSNR stuff (Juanjo)
797 - simple stats output (Juanjo)
798 - 16-bit and 15-bit RGB/BGR/GBR support (Bisqwit)
803 - some header fixes (Zdenek Kabelac <kabi at informatics.muni.cz>)
804 - many MMX optimizations (Nick Kurshev <nickols_k at mail.ru>)
805 - added configure system (actually a small shell script)
806 - added MPEG audio layer 1/2/3 decoding using LGPL'ed mpglib by
807 Michael Hipp (temporary solution - waiting for integer only
809 - fixed VIDIOCSYNC interrupt
810 - added Intel H.263 decoding support ('I263' AVI fourCC)
811 - added Real Video 1.0 decoding (needs further testing)
812 - simplified image formats again. Added PGM format (=grey
813 pgm). Renamed old PGM to PGMYUV.
814 - fixed msmpeg4 slice issues (tell me if you still find problems)
815 - fixed OpenDivX bugs with newer versions (added VOL header decoding)
816 - added support for MPlayer interface
817 - added macroblock skip optimization
818 - added MJPEG decoder
819 - added mmx/mmxext IDCT from libmpeg2
820 - added pgmyuvpipe, ppm, and ppm_pipe formats (original patch by Celer
821 <celer at shell.scrypt.net>)
822 - added pixel format conversion layer (e.g. for MJPEG or PPM)
823 - added deinterlacing option
825 - MPEG-4 vol header fixes (Jonathan Marsden <snmjbm at pacbell.net>)
826 - ARM optimizations (Lionel Ulmer <lionel.ulmer at free.fr>).
827 - Windows porting of file converter
828 - added MJPEG raw format (input/ouput)
829 - added JPEG image format support (input/output)
834 - fixed some std header definitions (Bjorn Lindgren
835 <bjorn.e.lindgren at telia.com>).
836 - added MPEG demuxer (MPEG-1 and 2 compatible).
838 - added prototype RM demuxer
839 - added AC3 decoding (done with libac3 by Aaron Holtzman)
840 - added decoding codec parameter guessing (.e.g. for MPEG, because the
841 header does not include them)
842 - fixed header generation in MPEG-1, AVI and ASF muxer: wmplayer can now
843 play them (only tested video)
844 - fixed H.263 white bug
845 - fixed phase rounding in img resample filter
846 - add MMX code for polyphase img resample filter
847 - added CPU autodetection
848 - added generic title/author/copyright/comment string handling (ASF and RM
850 - added SWF demux to extract MP3 track (not usable yet because no MP3
852 - added fractional frame rate support
853 - codecs are no longer searched by read_header() (should fix ffserver
859 - BGR24 patch (initial patch by Jeroen Vreeken <pe1rxq at amsat.org>)
860 - fixed raw yuv output
861 - added motion rounding support in MPEG-4
862 - fixed motion bug rounding in MSMPEG4
863 - added B-frame handling in video core
864 - added full MPEG-1 decoding support
865 - added partial (frame only) MPEG-2 support
866 - changed the FOURCC code for H.263 to "U263" to be able to see the
867 +AVI/H.263 file with the UB Video H.263+ decoder. MPlayer works with
868 this +codec ;) (JuanJo).
869 - Halfpel motion estimation after MB type selection (JuanJo)
870 - added pgm and .Y.U.V output format
871 - suppressed 'img:' protocol. Simply use: /tmp/test%d.[pgm|Y] as input or
873 - added pgmpipe I/O format (original patch from Martin Aumueller
874 <lists at reserv.at>, but changed completely since we use a format
875 instead of a protocol)
880 - added H.263/MPEG-4/MSMPEG4 decoding support. MPEG-4 decoding support
881 (for OpenDivX) is almost complete: 8x8 MVs and rounding are
882 missing. MSMPEG4 support is complete.
883 - added prototype MPEG-1 decoder. Only I- and P-frames handled yet (it
884 can decode ffmpeg MPEGs :-)).
885 - added libavcodec API documentation (see apiexample.c).
886 - fixed image polyphase bug (the bottom of some images could be
888 - added support for non clipped motion vectors (decoding only)
889 and image sizes non-multiple of 16
890 - added support for AC prediction (decoding only)
891 - added file overwrite confirmation (can be disabled with -y)
892 - added custom size picture to H.263 using H.263+ (Juanjo)
897 - added MSMPEG4 (aka DivX) compatible encoder. Changed default codec
898 of AVI and ASF to DIV3.
899 - added -me option to set motion estimation method
900 (default=log). suppressed redundant -hq option.
901 - added options -acodec and -vcodec to force a given codec (useful for
904 - improved dct_quantize speed
905 - factorized some motion estimation code
910 - removing grab code from ffserver and moved it to ffmpeg. Added
911 multistream support to ffmpeg.
912 - added timeshifting support for live feeds (option ?date=xxx in the
914 - added high quality image resize code with polyphase filter (need
915 mmx/see optimization). Enable multiple image size support in ffserver.
916 - added multi live feed support in ffserver
917 - suppressed master feature from ffserver (it should be done with an
918 external program which opens the .ffm url and writes it to another
920 - added preliminary support for video stream parsing (WAV and AVI half
921 done). Added proper support for audio/video file conversion in
923 - added preliminary support for video file sending from ffserver
924 - redesigning I/O subsystem: now using URL based input and output
926 - added WAV format support
927 - added "tty user interface" to ffmpeg to stop grabbing gracefully
928 - added MMX/SSE optimizations to SAD (Sums of Absolutes Differences)
929 (Juan J. Sierralta P. a.k.a. "Juanjo" <juanjo at atmlab.utfsm.cl>)
930 - added MMX DCT from mpeg2_movie 1.5 (Juanjo)
931 - added new motion estimation algorithms, log and phods (Juanjo)
932 - changed directories: libav for format handling, libavcodec for
938 - added stereo in MPEG audio encoder
943 - added 'high quality' mode which use motion vectors. It can be used in
944 real time at low resolution.
945 - fixed rounding problems which caused quality problems at high
946 bitrates and large GOP size
949 version 0.3.2: small fixes
955 version 0.3.1: added avi/divx support
958 - added MPEG-4 codec compatible with OpenDivX. It is based on the H.263 codec
959 - added sound for flash format (not tested)
962 version 0.3: initial public release