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
16 - support ID3v2 tags in ASF files
17 - reference-counting for AVFrame and AVPacket data
18 - avconv now fails when input options are used for output file
20 - avconv options -filter_script and -filter_complex_script, which allow a
21 filtergraph description to be read from a file
22 - uniform options syntax across all filters
25 - asetpts filter (same as setpts, but for audio)
26 - trim and atrim filters
27 - avconv -t and -ss (output-only) options are now sample-accurate when
29 - Matroska muxer can now put the index at the beginning of the file.
30 - avconv -deinterlace option removed, the yadif filter should be used instead
31 - Apple Intermediate Codec decoder
32 - Escape 130 video decoder
33 - support for slice multithreading in libavfilter
34 - VC-1 interlaced B-frame support
35 - support for WavPack muxing (raw and in Matroska)
37 - WavPack encoding through libwavpack
38 - Added the -n parameter to avconv
40 - when transcoding with avconv (i.e. not streamcopying), -ss is now accurate
41 even when used as an input option. Previous behavior can be restored with
42 the -noaccurate_seek option.
43 - avconv -t option can now be used for inputs, to limit the duration of
44 data read from an input file
45 - Voxware MetaSound decoder
47 - Error Resilient AAC syntax (ER AAC LC) decoding
48 - Low Delay AAC (ER AAC LD) decoding
49 - mux chapters in ASF files
50 - Opus in Ogg demuxing
51 - Enhanced Low Delay AAC (ER AAC ELD) decoding (no LD SBR support)
53 - HNM version 4 demuxer and video decoder
55 - raw HEVC, HEVC in MOV/MP4, HEVC in Matroska, HEVC in MPEG-TS demuxing
56 - remove avplay -vismv option, which has not worked for a long time
58 - setsar/setdar filters now support variables in ratio expressions
59 - dar variable in the scale filter now returns the actual DAR (i.e. a * sar)
61 - support for decoding through VDPAU in avconv (the -hwaccel option)
62 - remove mp3_header_(de)compress bitstream filters
63 - stereoscopic 3d metadata handling
64 - png standalone parser
65 - WebP encoding via libwebp
68 - Mirillis FIC video decoder
70 - compand audio filter
74 - av_basename and av_dirname
75 - adobe and limelight publisher authentication in RTMP
76 - VDPAU hardware acceleration through normal hwaccel
81 - ashowinfo audio filter
82 - 24-bit FLAC encoding
84 - deprecated the avconv -vol option. the volume filter is to be used instead.
85 - multi-channel ALAC encoding up to 7.1
86 - TAK demuxer, parser, and decoder
87 - adaptive frame-level multithreading for H.264
91 - metadata (INFO tag) support in WAV muxer
92 - support for building DLLs using MSVC
93 - remove avserver daemon mode
94 - support building on the Plan 9 operating system
95 - ffv1: support version 1.3
100 - XWD encoder and decoder
101 - Support for fragmentation in the mov/mp4 muxer
102 - ISMV (Smooth Streaming) muxer
103 - CDXL demuxer and decoder
104 - Apple ProRes encoder
105 - Sun Rasterfile Encoder
107 - ID3v2 attached pictures reading and writing
108 - WMA Lossless decoder
110 - RealAudio Lossless decoder
112 - drop support for avconv without libavfilter
113 - add libavresample audio conversion library
114 - audio filters support in libavfilter and avconv
118 - avprobe output is now standard INI or JSON. The old format can still
119 be used with -of old.
120 - Indeo Audio decoder
121 - channelsplit audio filter
122 - RTMPT protocol support
123 - iLBC encoding/decoding via libilbc
124 - Microsoft Screen 1 decoder
126 - audio channel mapping filter
127 - Microsoft ATC Screen decoder
129 - TechSmith Screen Codec 2 decoder
130 - AAC encoding via libfdk-aac
131 - Microsoft Expression Encoder Screen decoder
132 - RTMPS protocol support
133 - RTMPTS protocol support
134 - JPEG 2000 encoding support through OpenJPEG
135 - G.723.1 demuxer and decoder
136 - RTMPE protocol support
137 - RTMPTE protocol support
138 - Canopus Lossless Codec decoder
139 - avconv -shortest option is now per-output file,
140 -pass and -passlogfile are now per-output stream
142 - Microsoft Screen 2 decoder
143 - RTP depacketization of JPEG
144 - Smooth Streaming live segmenter muxer
145 - RTP packetization of JPEG
146 - Opus decoder and encoder using libopus
147 - remove -same_quant, it hasn't worked for years
148 - support for building with MSVC
159 - Automatic thread count based on detection number of (available) CPU cores
160 - Deprecate libpostproc. If desired, the switch --enable-postproc will
161 enable it but it may be removed in a later Libav release.
162 - rv34: frame-level multi-threading
163 - optimized iMDCT transform on x86 using SSE for for mpegaudiodec
169 - Flash Screen Video 2 decoder
170 - ffplay/ffprobe/ffserver renamed to avplay/avprobe/avserver
171 - ffmpeg deprecated, added avconv, which is almost the same for now, except
172 for a few incompatible changes in the options, which will hopefully make them
173 easier to use. The changes are:
174 * The options placement is now strictly enforced! While in theory the
175 options for ffmpeg should be given in [input options] -i INPUT [output
176 options] OUTPUT order, in practice it was possible to give output options
177 before the -i and it mostly worked. Except when it didn't - the behavior was
178 a bit inconsistent. In avconv, it is not possible to mix input and output
179 options. All non-global options are reset after an input or output filename.
180 * All per-file options are now truly per-file - they apply only to the next
181 input or output file and specifying different values for different files
182 will now work properly (notably -ss and -t options).
183 * All per-stream options are now truly per-stream - it is possible to
184 specify which stream(s) should a given option apply to. See the Stream
185 specifiers section in the avconv manual for details.
186 * In ffmpeg some options (like -newvideo/-newaudio/...) are irregular in the
187 sense that they're specified after the output filename instead of before,
188 like all other options. In avconv this irregularity is removed, all options
189 apply to the next input or output file.
190 * -newvideo/-newaudio/-newsubtitle options were removed. Not only were they
191 irregular and highly confusing, they were also redundant. In avconv the -map
192 option will create new streams in the output file and map input streams to
193 them. E.g. avconv -i INPUT -map 0 OUTPUT will create an output stream for
194 each stream in the first input file.
195 * The -map option now has slightly different and more powerful syntax:
196 + Colons (':') are used to separate file index/stream type/stream index
197 instead of dots. Comma (',') is used to separate the sync stream instead
198 of colon.. This is done for consistency with other options.
199 + It's possible to specify stream type. E.g. -map 0:a:2 creates an
200 output stream from the third input audio stream.
201 + Omitting the stream index now maps all the streams of the given type,
202 not just the first. E.g. -map 0:s creates output streams for all the
203 subtitle streams in the first input file.
204 + Since -map can now match multiple streams, negative mappings were
205 introduced. Negative mappings disable some streams from an already
206 defined map. E.g. '-map 0 -map -0:a:1' means 'create output streams for
207 all the stream in the first input file, except for the second audio
209 * There is a new option -c (or -codec) for choosing the decoder/encoder to
210 use, which allows to precisely specify target stream(s) consistently with
211 other options. E.g. -c:v lib264 sets the codec for all video streams, -c:a:0
212 libvorbis sets the codec for the first audio stream and -c copy copies all
213 the streams without reencoding. Old -vcodec/-acodec/-scodec options are now
215 * It is now possible to precisely specify which stream should an AVOption
216 apply to. E.g. -b:v:0 2M sets the bitrate for the first video stream, while
217 -b:a 128k sets the bitrate for all audio streams. Note that the old -ab 128k
218 syntax is deprecated and will stop working soon.
219 * -map_chapters now takes only an input file index and applies to the next
220 output file. This is consistent with how all the other options work.
221 * -map_metadata now takes only an input metadata specifier and applies to
222 the next output file. Output metadata specifier is now part of the option
223 name, similarly to the AVOptions/map/codec feature above.
224 * -metadata can now be used to set metadata on streams and chapters, e.g.
225 -metadata:s:1 language=eng sets the language of the first stream to 'eng'.
226 This made -vlang/-alang/-slang options redundant, so they were removed.
227 * -qscale option now uses stream specifiers and applies to all streams, not
228 just video. I.e. plain -qscale number would now apply to all streams. To get
229 the old behavior, use -qscale:v. Also there is now a shortcut -q for -qscale
230 and -aq is now an alias for -q:a.
231 * -vbsf/-absf/-sbsf options were removed and replaced by a -bsf option which
232 uses stream specifiers. Use -bsf:v/a/s instead of the old options.
233 * -itsscale option now uses stream specifiers, so its argument is only the
235 * -intra option was removed, use -g 0 for the same effect.
236 * -psnr option was removed, use -flags +psnr for the same effect.
237 * -vf option is now an alias to the new -filter option, which uses stream specifiers.
238 * -vframes/-aframes/-dframes options are now aliases to the new -frames option.
239 * -vtag/-atag/-stag options are now aliases to the new -tag option.
241 - Windows Media Image decoder
245 - libcdio-paranoia input device for audio CD grabbing
247 - Apple ProRes decoder
248 - CELT in Ogg demuxing
249 - VC-1 interlaced decoding
250 - lut, lutrgb, and lutyuv filters
253 - Speex encoding via libspeex
254 - 4:2:2 H.264 decoding support
255 - 4:2:2 and 4:4:4 H.264 encoding with libx264
256 - Pulseaudio input device
257 - replacement Indeo 3 decoder
258 - TLS/SSL and HTTPS protocol support
259 - AVOptions API rewritten and documented
260 - most of CODEC_FLAG2_*, some CODEC_FLAG_* and many codec-specific fields in
261 AVCodecContext deprecated. Codec private options should be used instead.
262 - Properly working defaults in libx264 wrapper, support for native presets.
263 - Encrypted OMA files support
264 - Discworld II BMV decoding support
266 - OS X Video Decoder Acceleration (VDA) support
267 - CRI ADX audio format muxer and demuxer
268 - Playstation Portable PMP format demuxer
269 - PCM format support in OMA demuxer
271 - Dxtory capture format decoder
272 - v410 QuickTime uncompressed 4:4:4 10-bit encoder and decoder
274 - Simple segmenting muxer
281 - E-AC-3 audio encoder
282 - ac3enc: add channel coupling support
283 - floating-point sample format support for (E-)AC-3, DCA, AAC, Vorbis decoders
284 - H.264/MPEG frame-level multithreading
285 - av_metadata_* functions renamed to av_dict_* and moved to libavutil
286 - 4:4:4 H.264 decoding support
287 - 10-bit H.264 optimizations for x86
288 - bump libswscale for recently reported ABI break
293 - VP8 frame-level multithreading
294 - NEON optimizations for VP8
295 - removed a lot of deprecated API cruft
296 - FFT and IMDCT optimizations for AVX (Sandy Bridge) processors
298 - SMPTE 302M AES3 audio decoder
299 - ffmpeg no longer quits after the 'q' key is pressed; use 'ctrl+c' instead
300 - 9bit and 10bit per sample support in the H.264 decoder
305 - WebM support in Matroska de/muxer
306 - low overhead Ogg muxing
308 - VP8 de/encoding via libvpx
309 - Demuxer for On2's IVF format
310 - Pictor/PC Paint decoder
312 - libfaad2 wrapper removed
313 - DTS-ES extension (XCh) decoding support
315 - RTSP tunneling over HTTP
316 - RTP depacketization of SVQ3
317 - -strict inofficial replaced by -strict unofficial
318 - ffplay -exitonkeydown and -exitonmousedown options added
319 - native GSM / GSM MS decoder
320 - RTP depacketization of QDM2
321 - ANSI/ASCII art playback system
322 - Lego Mindstorms RSO de/muxer
323 - SubRip subtitle file muxer and demuxer
324 - Chinese AVS encoding via libxavs
325 - ffprobe -show_packets option added
326 - RTP packetization of Theora and Vorbis
327 - RTP depacketization of MP4A-LATM
328 - RTP packetization and depacketization of VP8
330 - Apple HTTP Live Streaming demuxer
333 - G.722 ADPCM audio encoder/decoder
336 - frei0r wrapper filter
337 - change crop filter syntax to width:height:x:y
338 - make the crop filter accept parametric expressions
339 - make ffprobe accept AVFormatContext options
342 - Demuxer for Leitch/Harris' VR native stream format (LXF)
343 - RTP depacketization of the X-QT QuickTime format
344 - SAP (Session Announcement Protocol, RFC 2974) muxer and demuxer
346 - ffmpeg -crop* options removed
347 - transpose filter added
348 - ffmpeg -force_key_frames option added
349 - demuxer for receiving raw rtp:// URLs without an SDP description
350 - single stream LATM/LOAS decoder
351 - setpts filter added
352 - Win64 support for optimized x86 assembly functions
353 - MJPEG/AVI1 to JPEG/JFIF bitstream filter
354 - ASS subtitle encoder and decoder
355 - IEC 61937 encapsulation for E-AC-3, TrueHD, DTS-HD (for HDMI passthrough)
356 - overlay filter added
357 - rename aspect filter to setdar, and pixelaspect to setsar
359 - Mobotix .mxg demuxer
360 - frei0r source added
361 - hqdn3d filter added
362 - RTP depacketization of QCELP
364 - gradfun filter added
366 - replace the ocv_smooth filter with a more generic ocv filter
367 - Windows Televison (WTV) demuxer
368 - FFmpeg metadata format muxer and demuxer
369 - SubRip (srt) subtitle decoder
370 - floating-point AC-3 encoder added
372 - ffmpeg -copytb option added
374 - Wing Commander IV movies decoder added
376 - Bink version 'b' audio and video decoder
377 - Bitmap Brothers JV playback system
378 - Apple HTTP Live Streaming protocol handler
379 - sndio support for playback and record
380 - Linux framebuffer input device added
381 - Chronomaster DFA decoder
382 - Mobotix MxPEG decoder
383 - AAC encoding via libvo-aacenc
384 - AMR-WB encoding via libvo-amrwbenc
386 - fieldorder video filter added
391 - PB-frame decoding for H.263
392 - deprecated vhook subsystem removed
393 - deprecated old scaler removed
395 - Alpha channel scaler
397 - RTP packetization of H.263
398 - RTP packetization of AMR
399 - RTP depacketization of Vorbis
400 - CorePNG decoding support
401 - Cook multichannel decoding support
402 - introduced avlanguage helpers in libavformat
403 - 8088flex TMV demuxer and decoder
404 - per-stream language-tags extraction in asfdec
405 - V210 decoder and encoder
406 - remaining GPL parts in AC-3 decoder converted to LGPL
408 - SoX native format muxer and demuxer
409 - AMR-NB decoding/encoding, AMR-WB decoding via OpenCORE libraries
411 - Electronic Arts Madcow decoder
412 - DivX (XSUB) subtitle encoder
413 - nonfree libamr support for AMR-NB/WB decoding/encoding removed
414 - experimental AAC encoder
415 - RTP depacketization of ASF and RTSP from WMS servers
416 - RTMP support in libavformat
417 - noX handling for OPT_BOOL X options
419 - IEC-61937 compatible Muxer
421 - Bluray (PGS) subtitle decoder
422 - LPCM support in MPEG-TS (HDMV RID as found on Blu-ray disks)
424 - Core Audio Format demuxer
426 - MD STUDIO audio demuxer
427 - RF64 support in WAV demuxer
428 - MPEG-4 Audio Lossless Coding (ALS) decoder
429 - -formats option split into -formats, -codecs, -bsfs, and -protocols
431 - CDG demuxer and decoder
433 - Auravision Aura 1 and 2 decoders
434 - Deluxe Paint Animation playback system
436 - Adobe Filmstrip muxer and demuxer
437 - RTP depacketization of H.263
438 - Bink demuxer and audio/video decoders
439 - enable symbol versioning by default for linkers that support it
440 - IFF PBM/ILBM bitmap decoder
443 - RTP depacketization of AMR
449 - Kega Game Video (KGV1) decoder
450 - VorbisComment writing for FLAC, Ogg FLAC and Ogg Speex files
451 - RTP depacketization of Theora
452 - HTTP Digest authentication
453 - RTMP/RTMPT/RTMPS/RTMPE/RTMPTE protocol support via librtmp
454 - Psygnosis YOP demuxer and video decoder
455 - spectral extension support in the E-AC-3 decoder
456 - unsharp video filter
457 - RTP hinting in the mov/3gp/mp4 muxer
458 - Dirac in Ogg demuxing
459 - seek to keyframes in Ogg
460 - 4:2:2 and 4:4:4 Theora decoding
461 - 35% faster VP3/Theora decoding
462 - faster AAC decoding
463 - faster H.264 decoding
464 - RealAudio 1.0 (14.4K) encoder
469 - DV50 AKA DVCPRO50 encoder, decoder, muxer and demuxer
470 - TechSmith Camtasia (TSCC) video decoder
471 - IBM Ultimotion (ULTI) video decoder
472 - Sierra Online audio file demuxer and decoder
473 - Apple QuickDraw (qdrw) video decoder
474 - Creative ADPCM audio decoder (16 bits as well as 8 bits schemes)
475 - Electronic Arts Multimedia (WVE/UV2/etc.) file demuxer
476 - Miro VideoXL (VIXL) video decoder
477 - H.261 video encoder
479 - Nullsoft Video (NSV) file demuxer
480 - Shorten audio decoder
482 - Apple Lossless Audio Codec (ALAC) decoder
483 - Winnov WNV1 video decoder
484 - Autodesk Animator Studio Codec (AASC) decoder
485 - Indeo 2 video decoder
486 - Fraps FPS1 video decoder
487 - Snow video encoder/decoder
488 - Sonic audio encoder/decoder
489 - Vorbis audio decoder
490 - Macromedia ADPCM decoder
491 - Duck TrueMotion 2 video decoder
492 - support for decoding FLX and DTA extensions in FLIC files
493 - H.264 custom quantization matrices support
494 - ffserver fixed, it should now be usable again
496 - Real Cooker audio decoder
497 - TrueSpeech audio decoder
498 - WMA2 audio decoder fixed, now all files should play correctly
499 - RealAudio 14.4 and 28.8 decoders fixed
501 - build system improvements
502 - tabs and trailing whitespace removed from the codebase
503 - CamStudio video decoder
504 - AIFF/AIFF-C audio format, encoding and decoding
505 - ADTS AAC file reading and writing
506 - Creative VOC file reading and writing
507 - American Laser Games multimedia (*.mm) playback system
508 - Zip Motion Blocks Video decoder
509 - improved Theora/VP3 decoder
510 - True Audio (TTA) decoder
511 - AVS demuxer and video decoder
513 - Smacker demuxer and decoder
514 - NuppelVideo/MythTV demuxer and RTjpeg decoder
516 - MPEG-2 intra VLC support
517 - MPEG-2 4:2:2 encoder
518 - Flash Screen Video decoder
520 - Chinese AVS decoder
523 - VC-1/WMV3/WMV9 video decoder
526 - VMware video decoder
529 - WavPack lossless audio decoder
530 - Targa (.TGA) picture decoder
531 - Vorbis audio encoder
532 - Delphine Software .cin demuxer/audio and video decoder
533 - Tiertex .seq demuxer/video decoder
535 - TIFF picture encoder and decoder
536 - GIF picture decoder
537 - Intel Music Coder decoder
538 - Zip Motion Blocks Video encoder
540 - Flash Screen Video encoder
541 - Theora encoding via libtheora
544 - GSM-MS encoder and decoder
546 - DXA demuxer and decoder
548 - Gamecube movie (.THP) playback system
549 - Blackfin optimizations
550 - Interplay C93 demuxer and video decoder
551 - Bethsoft VID demuxer and video decoder
554 - V.Flash PTX decoder
555 - RoQ muxer, RoQ audio encoder
556 - Renderware TXD demuxer and decoder
557 - extern C declarations for C++ removed from headers
558 - sws_flags command line option
562 - OS/2 support removed and restored again
565 - additional SPARC (VIS) optimizations
567 - slice-based parallel H.264 decoding
568 - Monkey's Audio demuxer and decoder
569 - AMV audio and video decoder
571 - H.264 PAFF decoding
572 - Nellymoser ASAO decoder
573 - Beam Software SIFF demuxer and decoder
574 - libvorbis Vorbis decoding removed in favor of native decoder
575 - IntraX8 (J-Frame) subdecoder for WMV2 and VC-1
576 - Ogg (Theora, Vorbis and FLAC) muxer
577 - The "device" muxers and demuxers are now in a new libavdevice library
578 - PC Paintbrush PCX decoder
579 - Sun Rasterfile decoder
580 - TechnoTrend PVA demuxer
581 - Linux Media Labs MPEG-4 (LMLM4) demuxer
582 - AVM2 (Flash 9) SWF muxer
583 - QT variant of IMA ADPCM encoder
585 - iPod/iPhone compatible mp4 muxer
587 - MSN TCP Webcam stream demuxer
588 - RL2 demuxer / decoder
591 - non-recursive Makefiles
593 - MAXIS EA XA (.xa) demuxer / decoder
597 - Electronic Arts CMV decoder
598 - Motion Pixels Video decoder
599 - Motion Pixels MVI demuxer
600 - removed animated GIF decoder/demuxer
601 - D-Cinema audio muxer
602 - Electronic Arts TGV decoder
603 - Apple Lossless Audio Codec (ALAC) encoder
605 - floating point PCM encoder/decoder
607 - DV100 AKA DVCPRO HD decoder and demuxer
608 - E-AC-3 support added to AC-3 decoder
609 - Nellymoser ASAO encoder
610 - ASS and SSA demuxer and muxer
611 - liba52 wrapper removed
612 - SVQ3 watermark decoding support
613 - Speex decoding via libspeex
614 - Electronic Arts TGQ decoder
616 - QCELP / PureVoice decoder
618 - hybrid WavPack support
619 - R3D REDCODE demuxer
620 - ALSA support for playback and record
621 - Electronic Arts TQI decoder
622 - OpenJPEG based JPEG 2000 decoder
623 - NC (NC4600) camera file demuxer
624 - Gopher client support
626 - generic metadata API
631 - DV encoder, DV muxer
632 - Microsoft RLE video decoder
633 - Microsoft Video-1 decoder
634 - Apple Animation (RLE) decoder
635 - Apple Graphics (SMC) decoder
636 - Apple Video (RPZA) decoder
638 - Sega FILM (CPK) file demuxer
639 - Westwood multimedia support (VQA & AUD files)
640 - Id Quake II CIN playback support
642 - FLIC playback support
643 - RealVideo 2.0 (RV20) decoder
644 - Duck TrueMotion v1 (DUCK) video decoder
645 - Sierra VMD demuxer and video decoder
646 - MSZH and ZLIB decoder support
650 - rate distortion optimal cbp support
651 - rate distorted optimal ac prediction for MPEG-4
652 - rate distorted optimal lambda->qp support
653 - AAC encoding with libfaac
654 - Sunplus JPEG codec (SP5X) support
655 - use Lagrange multipler instead of QP for ratecontrol
656 - Theora/VP3 decoding support
657 - XA and ADX ADPCM codecs
658 - export MPEG-2 active display area / pan scan
659 - Add support for configuring with IBM XLC
660 - floating point AAN DCT
661 - initial support for zygo video (not complete)
663 - new audio/video parser API
665 - av_read_frame() and av_seek_frame() support
666 - missing last frame fixes
667 - seek by mouse in ffplay
668 - noise reduction of DCT coefficients
669 - H.263 OBMC & 4MV support
670 - H.263 alternative inter vlc support
672 - H.263 slice structured mode
673 - interlaced DCT support for MPEG-2 encoding
674 - stuffing to stay above min_bitrate
675 - MB type & QP visualization
676 - frame stepping for ffplay
677 - interlaced motion estimation
678 - alternate scantable support
679 - SVCD scan offset support
682 - quantizer noise shaping
683 - G.726 ADPCM audio codec
685 - multithreaded/SMP motion estimation
686 - multithreaded/SMP encoding for MPEG-1/MPEG-2/MPEG-4/H.263
687 - multithreaded/SMP decoding for MPEG-2
689 - Metrowerks CodeWarrior suppport
690 - H.263+ custom pcf support
691 - nicer output for 'ffmpeg -formats'
693 - SGI image format, encoding and decoding
694 - H.264 loop filter support
695 - H.264 CABAC support
696 - nicer looking arrows for the motion vector visualization
697 - improved VCD support
698 - audio timestamp drift compensation
699 - MPEG-2 YUV 422/444 support
700 - polyphase kaiser windowed sinc and blackman nuttall windowed sinc audio resample
701 - better image scaling
703 - correctly interleave packets during encoding
704 - VIS optimized motion compensation
705 - intra_dc_precision>0 encoding support
706 - support reuse of motion vectors/MB types/field select values of the source video
707 - more accurate deblock filter
709 - many optimizations and bugfixes
710 - FunCom ISS audio file demuxer and according ADPCM decoding
715 - MPEG-2 video encoding (Michael)
716 - Id RoQ playback subsystem (Mike Melanson and Tim Ferguson)
717 - Wing Commander III Movie (.mve) file playback subsystem (Mike Melanson
719 - Xan DPCM audio decoder (Mario Brito)
720 - Interplay MVE playback subsystem (Mike Melanson)
721 - Duck DK3 and DK4 ADPCM audio decoders (Mike Melanson)
726 - RealAudio 1.0 (14_4) and 2.0 (28_8) native decoders. Author unknown, code from mplayerhq
727 (originally from public domain player for Amiga at http://www.honeypot.net/audio)
728 - current version now also compiles with older GCC (Fabrice)
729 - 4X multimedia playback system including 4xm file demuxer (Mike
730 Melanson), and 4X video and audio codecs (Michael)
731 - Creative YUV (CYUV) decoder (Mike Melanson)
732 - FFV1 codec (our very simple lossless intra only codec, compresses much better
733 than HuffYUV) (Michael)
734 - ASV1 (Asus), H.264, Intel indeo3 codecs have been added (various)
735 - tiny PNG encoder and decoder, tiny GIF decoder, PAM decoder (PPM with
736 alpha support), JPEG YUV colorspace support. (Fabrice Bellard)
737 - ffplay has been replaced with a newer version which uses SDL (optionally)
738 for multiplatform support (Fabrice)
739 - Sorenson Version 3 codec (SVQ3) support has been added (decoding only) - donated
741 - AMR format has been added (Johannes Carlsson)
742 - 3GP support has been added (Johannes Carlsson)
743 - VP3 codec has been added (Mike Melanson)
744 - more MPEG-1/2 fixes
745 - better multiplatform support, MS Visual Studio fixes (various)
746 - AltiVec optimizations (Magnus Damn and others)
747 - SH4 processor support has been added (BERO)
748 - new public interfaces (avcodec_get_pix_fmt) (Roman Shaposhnick)
749 - VOB streaming support (Brian Foley)
750 - better MP3 autodetection (Andriy Rysin)
751 - qpel encoding (Michael)
752 - 4mv+b frames encoding finally fixed (Michael)
753 - chroma ME (Michael)
754 - 5 comparison functions for ME (Michael)
755 - B-frame encoding speedup (Michael)
756 - WMV2 codec (unfinished - Michael)
757 - user specified diamond size for EPZS (Michael)
758 - Playstation STR playback subsystem, still experimental (Mike and Michael)
759 - ASV2 codec (Michael)
760 - CLJR decoder (Alex)
762 .. And lots more new enhancements and fixes.
767 - completely new integer only MPEG audio layer 1/2/3 decoder rewritten
769 - Recoded DCT and motion vector search with gcc (no longer depends on nasm)
770 - fix quantization bug in AC3 encoder
771 - added PCM codecs and format. Corrected WAV/AVI/ASF PCM issues
772 - added prototype ffplay program
773 - added GOB header parsing on H.263/H.263+ decoder (Juanjo)
774 - bug fix on MCBPC tables of H.263 (Juanjo)
775 - bug fix on DC coefficients of H.263 (Juanjo)
776 - added Advanced Prediction Mode on H.263/H.263+ decoder (Juanjo)
777 - now we can decode H.263 streams found in QuickTime files (Juanjo)
778 - now we can decode H.263 streams found in VIVO v1 files(Juanjo)
779 - preliminary RTP "friendly" mode for H.263/H.263+ coding. (Juanjo)
780 - added GOB header for H.263/H.263+ coding on RTP mode (Juanjo)
781 - now H.263 picture size is returned on the first decoded frame (Juanjo)
782 - added first regression tests
783 - added MPEG-2 TS demuxer
784 - new demux API for libav
785 - more accurate and faster IDCT (Michael)
786 - faster and entropy-controlled motion search (Michael)
787 - two pass video encoding (Michael)
788 - new video rate control (Michael)
789 - added MSMPEG4V1, MSMPEGV2 and WMV1 support (Michael)
790 - great performance improvement of video encoders and decoders (Michael)
791 - new and faster bit readers and vlc parsers (Michael)
792 - high quality encoding mode: tries all macroblock/VLC types (Michael)
793 - added DV video decoder
794 - preliminary RTP/RTSP support in ffserver and libavformat
795 - H.263+ AIC decoding/encoding support (Juanjo)
796 - VCD MPEG-PS mode (Juanjo)
797 - PSNR stuff (Juanjo)
798 - simple stats output (Juanjo)
799 - 16-bit and 15-bit RGB/BGR/GBR support (Bisqwit)
804 - some header fixes (Zdenek Kabelac <kabi at informatics.muni.cz>)
805 - many MMX optimizations (Nick Kurshev <nickols_k at mail.ru>)
806 - added configure system (actually a small shell script)
807 - added MPEG audio layer 1/2/3 decoding using LGPL'ed mpglib by
808 Michael Hipp (temporary solution - waiting for integer only
810 - fixed VIDIOCSYNC interrupt
811 - added Intel H.263 decoding support ('I263' AVI fourCC)
812 - added Real Video 1.0 decoding (needs further testing)
813 - simplified image formats again. Added PGM format (=grey
814 pgm). Renamed old PGM to PGMYUV.
815 - fixed msmpeg4 slice issues (tell me if you still find problems)
816 - fixed OpenDivX bugs with newer versions (added VOL header decoding)
817 - added support for MPlayer interface
818 - added macroblock skip optimization
819 - added MJPEG decoder
820 - added mmx/mmxext IDCT from libmpeg2
821 - added pgmyuvpipe, ppm, and ppm_pipe formats (original patch by Celer
822 <celer at shell.scrypt.net>)
823 - added pixel format conversion layer (e.g. for MJPEG or PPM)
824 - added deinterlacing option
826 - MPEG-4 vol header fixes (Jonathan Marsden <snmjbm at pacbell.net>)
827 - ARM optimizations (Lionel Ulmer <lionel.ulmer at free.fr>).
828 - Windows porting of file converter
829 - added MJPEG raw format (input/ouput)
830 - added JPEG image format support (input/output)
835 - fixed some std header definitions (Bjorn Lindgren
836 <bjorn.e.lindgren at telia.com>).
837 - added MPEG demuxer (MPEG-1 and 2 compatible).
839 - added prototype RM demuxer
840 - added AC3 decoding (done with libac3 by Aaron Holtzman)
841 - added decoding codec parameter guessing (.e.g. for MPEG, because the
842 header does not include them)
843 - fixed header generation in MPEG-1, AVI and ASF muxer: wmplayer can now
844 play them (only tested video)
845 - fixed H.263 white bug
846 - fixed phase rounding in img resample filter
847 - add MMX code for polyphase img resample filter
848 - added CPU autodetection
849 - added generic title/author/copyright/comment string handling (ASF and RM
851 - added SWF demux to extract MP3 track (not usable yet because no MP3
853 - added fractional frame rate support
854 - codecs are no longer searched by read_header() (should fix ffserver
860 - BGR24 patch (initial patch by Jeroen Vreeken <pe1rxq at amsat.org>)
861 - fixed raw yuv output
862 - added motion rounding support in MPEG-4
863 - fixed motion bug rounding in MSMPEG4
864 - added B-frame handling in video core
865 - added full MPEG-1 decoding support
866 - added partial (frame only) MPEG-2 support
867 - changed the FOURCC code for H.263 to "U263" to be able to see the
868 +AVI/H.263 file with the UB Video H.263+ decoder. MPlayer works with
869 this +codec ;) (JuanJo).
870 - Halfpel motion estimation after MB type selection (JuanJo)
871 - added pgm and .Y.U.V output format
872 - suppressed 'img:' protocol. Simply use: /tmp/test%d.[pgm|Y] as input or
874 - added pgmpipe I/O format (original patch from Martin Aumueller
875 <lists at reserv.at>, but changed completely since we use a format
876 instead of a protocol)
881 - added H.263/MPEG-4/MSMPEG4 decoding support. MPEG-4 decoding support
882 (for OpenDivX) is almost complete: 8x8 MVs and rounding are
883 missing. MSMPEG4 support is complete.
884 - added prototype MPEG-1 decoder. Only I- and P-frames handled yet (it
885 can decode ffmpeg MPEGs :-)).
886 - added libavcodec API documentation (see apiexample.c).
887 - fixed image polyphase bug (the bottom of some images could be
889 - added support for non clipped motion vectors (decoding only)
890 and image sizes non-multiple of 16
891 - added support for AC prediction (decoding only)
892 - added file overwrite confirmation (can be disabled with -y)
893 - added custom size picture to H.263 using H.263+ (Juanjo)
898 - added MSMPEG4 (aka DivX) compatible encoder. Changed default codec
899 of AVI and ASF to DIV3.
900 - added -me option to set motion estimation method
901 (default=log). suppressed redundant -hq option.
902 - added options -acodec and -vcodec to force a given codec (useful for
905 - improved dct_quantize speed
906 - factorized some motion estimation code
911 - removing grab code from ffserver and moved it to ffmpeg. Added
912 multistream support to ffmpeg.
913 - added timeshifting support for live feeds (option ?date=xxx in the
915 - added high quality image resize code with polyphase filter (need
916 mmx/see optimization). Enable multiple image size support in ffserver.
917 - added multi live feed support in ffserver
918 - suppressed master feature from ffserver (it should be done with an
919 external program which opens the .ffm url and writes it to another
921 - added preliminary support for video stream parsing (WAV and AVI half
922 done). Added proper support for audio/video file conversion in
924 - added preliminary support for video file sending from ffserver
925 - redesigning I/O subsystem: now using URL based input and output
927 - added WAV format support
928 - added "tty user interface" to ffmpeg to stop grabbing gracefully
929 - added MMX/SSE optimizations to SAD (Sums of Absolutes Differences)
930 (Juan J. Sierralta P. a.k.a. "Juanjo" <juanjo at atmlab.utfsm.cl>)
931 - added MMX DCT from mpeg2_movie 1.5 (Juanjo)
932 - added new motion estimation algorithms, log and phods (Juanjo)
933 - changed directories: libav for format handling, libavcodec for
939 - added stereo in MPEG audio encoder
944 - added 'high quality' mode which use motion vectors. It can be used in
945 real time at low resolution.
946 - fixed rounding problems which caused quality problems at high
947 bitrates and large GOP size
950 version 0.3.2: small fixes
956 version 0.3.1: added avi/divx support
959 - added MPEG-4 codec compatible with OpenDivX. It is based on the H.263 codec
960 - added sound for flash format (not tested)
963 version 0.3: initial public release