1 Entries are sorted chronologically from oldest to youngest within each release,
2 releases are sorted from youngest to oldest.
5 - aliases and defaults for Ogg subtypes (opus, spx)
6 - HEVC/H.265 RTP payload format (draft v6) packetizer and depacketizer
7 - avplay now exits by default at the end of playback
8 - XCB-based screen-grabber
9 - creating DASH compatible fragmented MP4, MPEG-DASH segmenting muxer
10 - H.261 RTP payload format (RFC 4587) depacketizer and experimental packetizer
13 - OpenH264 encoder wrapper
14 - Support DNx100 (960x720@8)
15 - DXVA2-accelerated HEVC decoding
16 - AAC ELD 480 decoding
17 - Intel QSV-accelerated H.264 decoding
18 - DSS SP decoder and DSS demuxer
19 - RTP depacketizer for AC3 payload format (RFC 4184)
20 - RTP depacketizer for loss tolerant payload format for MP3 audio (RFC 5219)
21 - RTP depacketizer for DV (RFC 6469)
23 - RTP depacketization of T.140 text (RFC 4103)
24 - VP9 RTP payload format (draft 0) experimental depacketizer
26 - DTS lossless extension (XLL) decoding (not lossless, disabled by default)
27 - Intel QSV-accelerated H.264 encoding
28 - MMAL-accelerated H.264 decoding
29 - DTS decoding through libdcadec
34 - shuffleplanes filter
35 - replaygain data export
36 - Alias PIX image encoder and decoder
37 - BRender PIX image decoder
38 - Amazing Studio PAF playback support
40 - BMP standalone parser
41 - OpenEXR image decoder
42 - support encoding and decoding 4-channel SGI images
43 - support decoding 16-bit RLE SGI images
45 - LucasArts SMUSH SANM video decoder
46 - LucasArts SMUSH VIMA audio decoder (ADPCM)
47 - LucasArts SMUSH demuxer
48 - MP2 encoding via TwoLAME
50 - Silicon Graphics RLE 8-bit video decoder
51 - Silicon Graphics Motion Video Compressor 1 & 2 decoder
52 - Silicon Graphics Movie demuxer
53 - On2 AVC (Audio for Video) decoder
54 - support for decoding through DXVA2 in avconv
55 - libbs2b-based stereo-to-binaural audio filter
57 - display matrix export and rotation API
58 - drop avserver, it was unmaintained for years and largely broken
60 - request Icecast metadata by default
61 - support for using metadata in stream specifiers in avtools
67 - support ID3v2 tags in ASF files
68 - reference-counting for AVFrame and AVPacket data
69 - avconv now fails when input options are used for output file
71 - avconv options -filter_script and -filter_complex_script, which allow a
72 filtergraph description to be read from a file
73 - uniform options syntax across all filters
76 - asetpts filter (same as setpts, but for audio)
77 - trim and atrim filters
78 - avconv -t and -ss (output-only) options are now sample-accurate when
80 - Matroska muxer can now put the index at the beginning of the file.
81 - avconv -deinterlace option removed, the yadif filter should be used instead
82 - Apple Intermediate Codec decoder
83 - Escape 130 video decoder
84 - support for slice multithreading in libavfilter
85 - VC-1 interlaced B-frame support
86 - support for WavPack muxing (raw and in Matroska)
88 - WavPack encoding through libwavpack
89 - Added the -n parameter to avconv
91 - when transcoding with avconv (i.e. not streamcopying), -ss is now accurate
92 even when used as an input option. Previous behavior can be restored with
93 the -noaccurate_seek option.
94 - avconv -t option can now be used for inputs, to limit the duration of
95 data read from an input file
96 - Voxware MetaSound decoder
98 - Error Resilient AAC syntax (ER AAC LC) decoding
99 - Low Delay AAC (ER AAC LD) decoding
100 - mux chapters in ASF files
101 - Opus in Ogg demuxing
102 - Enhanced Low Delay AAC (ER AAC ELD) decoding (no LD SBR support)
104 - HNM version 4 demuxer and video decoder
106 - raw HEVC, HEVC in MOV/MP4, HEVC in Matroska, HEVC in MPEG-TS demuxing
107 - remove avplay -vismv option, which has not worked for a long time
109 - setsar/setdar filters now support variables in ratio expressions
110 - dar variable in the scale filter now returns the actual DAR (i.e. a * sar)
112 - support for decoding through VDPAU in avconv (the -hwaccel option)
113 - remove mp3_header_(de)compress bitstream filters
114 - stereoscopic 3d metadata handling
115 - png standalone parser
116 - WebP encoding via libwebp
119 - Mirillis FIC video decoder
121 - compand audio filter
125 - av_basename and av_dirname
126 - adobe and limelight publisher authentication in RTMP
127 - VDPAU hardware acceleration through normal hwaccel
132 - ashowinfo audio filter
133 - 24-bit FLAC encoding
134 - audio volume filter
135 - deprecated the avconv -vol option. the volume filter is to be used instead.
136 - multi-channel ALAC encoding up to 7.1
137 - TAK demuxer, parser, and decoder
138 - adaptive frame-level multithreading for H.264
142 - metadata (INFO tag) support in WAV muxer
143 - support for building DLLs using MSVC
144 - remove avserver daemon mode
145 - support building on the Plan 9 operating system
146 - ffv1: support version 1.3
151 - XWD encoder and decoder
152 - Support for fragmentation in the mov/mp4 muxer
153 - ISMV (Smooth Streaming) muxer
154 - CDXL demuxer and decoder
155 - Apple ProRes encoder
156 - Sun Rasterfile Encoder
158 - ID3v2 attached pictures reading and writing
159 - WMA Lossless decoder
161 - RealAudio Lossless decoder
163 - drop support for avconv without libavfilter
164 - add libavresample audio conversion library
165 - audio filters support in libavfilter and avconv
169 - avprobe output is now standard INI or JSON. The old format can still
170 be used with -of old.
171 - Indeo Audio decoder
172 - channelsplit audio filter
173 - RTMPT protocol support
174 - iLBC encoding/decoding via libilbc
175 - Microsoft Screen 1 decoder
177 - audio channel mapping filter
178 - Microsoft ATC Screen decoder
180 - TechSmith Screen Codec 2 decoder
181 - AAC encoding via libfdk-aac
182 - Microsoft Expression Encoder Screen decoder
183 - RTMPS protocol support
184 - RTMPTS protocol support
185 - JPEG 2000 encoding support through OpenJPEG
186 - G.723.1 demuxer and decoder
187 - RTMPE protocol support
188 - RTMPTE protocol support
189 - Canopus Lossless Codec decoder
190 - avconv -shortest option is now per-output file,
191 -pass and -passlogfile are now per-output stream
193 - Microsoft Screen 2 decoder
194 - RTP depacketization of JPEG
195 - Smooth Streaming live segmenter muxer
196 - RTP packetization of JPEG
197 - Opus decoder and encoder using libopus
198 - remove -same_quant, it hasn't worked for years
199 - support for building with MSVC
210 - Automatic thread count based on detection number of (available) CPU cores
211 - Deprecate libpostproc. If desired, the switch --enable-postproc will
212 enable it but it may be removed in a later Libav release.
213 - rv34: frame-level multi-threading
214 - optimized iMDCT transform on x86 using SSE for for mpegaudiodec
220 - Flash Screen Video 2 decoder
221 - ffplay/ffprobe/ffserver renamed to avplay/avprobe/avserver
222 - ffmpeg deprecated, added avconv, which is almost the same for now, except
223 for a few incompatible changes in the options, which will hopefully make them
224 easier to use. The changes are:
225 * The options placement is now strictly enforced! While in theory the
226 options for ffmpeg should be given in [input options] -i INPUT [output
227 options] OUTPUT order, in practice it was possible to give output options
228 before the -i and it mostly worked. Except when it didn't - the behavior was
229 a bit inconsistent. In avconv, it is not possible to mix input and output
230 options. All non-global options are reset after an input or output filename.
231 * All per-file options are now truly per-file - they apply only to the next
232 input or output file and specifying different values for different files
233 will now work properly (notably -ss and -t options).
234 * All per-stream options are now truly per-stream - it is possible to
235 specify which stream(s) should a given option apply to. See the Stream
236 specifiers section in the avconv manual for details.
237 * In ffmpeg some options (like -newvideo/-newaudio/...) are irregular in the
238 sense that they're specified after the output filename instead of before,
239 like all other options. In avconv this irregularity is removed, all options
240 apply to the next input or output file.
241 * -newvideo/-newaudio/-newsubtitle options were removed. Not only were they
242 irregular and highly confusing, they were also redundant. In avconv the -map
243 option will create new streams in the output file and map input streams to
244 them. E.g. avconv -i INPUT -map 0 OUTPUT will create an output stream for
245 each stream in the first input file.
246 * The -map option now has slightly different and more powerful syntax:
247 + Colons (':') are used to separate file index/stream type/stream index
248 instead of dots. Comma (',') is used to separate the sync stream instead
249 of colon.. This is done for consistency with other options.
250 + It's possible to specify stream type. E.g. -map 0:a:2 creates an
251 output stream from the third input audio stream.
252 + Omitting the stream index now maps all the streams of the given type,
253 not just the first. E.g. -map 0:s creates output streams for all the
254 subtitle streams in the first input file.
255 + Since -map can now match multiple streams, negative mappings were
256 introduced. Negative mappings disable some streams from an already
257 defined map. E.g. '-map 0 -map -0:a:1' means 'create output streams for
258 all the stream in the first input file, except for the second audio
260 * There is a new option -c (or -codec) for choosing the decoder/encoder to
261 use, which allows to precisely specify target stream(s) consistently with
262 other options. E.g. -c:v lib264 sets the codec for all video streams, -c:a:0
263 libvorbis sets the codec for the first audio stream and -c copy copies all
264 the streams without reencoding. Old -vcodec/-acodec/-scodec options are now
266 * It is now possible to precisely specify which stream should an AVOption
267 apply to. E.g. -b:v:0 2M sets the bitrate for the first video stream, while
268 -b:a 128k sets the bitrate for all audio streams. Note that the old -ab 128k
269 syntax is deprecated and will stop working soon.
270 * -map_chapters now takes only an input file index and applies to the next
271 output file. This is consistent with how all the other options work.
272 * -map_metadata now takes only an input metadata specifier and applies to
273 the next output file. Output metadata specifier is now part of the option
274 name, similarly to the AVOptions/map/codec feature above.
275 * -metadata can now be used to set metadata on streams and chapters, e.g.
276 -metadata:s:1 language=eng sets the language of the first stream to 'eng'.
277 This made -vlang/-alang/-slang options redundant, so they were removed.
278 * -qscale option now uses stream specifiers and applies to all streams, not
279 just video. I.e. plain -qscale number would now apply to all streams. To get
280 the old behavior, use -qscale:v. Also there is now a shortcut -q for -qscale
281 and -aq is now an alias for -q:a.
282 * -vbsf/-absf/-sbsf options were removed and replaced by a -bsf option which
283 uses stream specifiers. Use -bsf:v/a/s instead of the old options.
284 * -itsscale option now uses stream specifiers, so its argument is only the
286 * -intra option was removed, use -g 0 for the same effect.
287 * -psnr option was removed, use -flags +psnr for the same effect.
288 * -vf option is now an alias to the new -filter option, which uses stream specifiers.
289 * -vframes/-aframes/-dframes options are now aliases to the new -frames option.
290 * -vtag/-atag/-stag options are now aliases to the new -tag option.
292 - Windows Media Image decoder
296 - libcdio-paranoia input device for audio CD grabbing
298 - Apple ProRes decoder
299 - CELT in Ogg demuxing
300 - VC-1 interlaced decoding
301 - lut, lutrgb, and lutyuv filters
304 - Speex encoding via libspeex
305 - 4:2:2 H.264 decoding support
306 - 4:2:2 and 4:4:4 H.264 encoding with libx264
307 - Pulseaudio input device
308 - replacement Indeo 3 decoder
309 - TLS/SSL and HTTPS protocol support
310 - AVOptions API rewritten and documented
311 - most of CODEC_FLAG2_*, some CODEC_FLAG_* and many codec-specific fields in
312 AVCodecContext deprecated. Codec private options should be used instead.
313 - Properly working defaults in libx264 wrapper, support for native presets.
314 - Encrypted OMA files support
315 - Discworld II BMV decoding support
317 - OS X Video Decoder Acceleration (VDA) support
318 - CRI ADX audio format muxer and demuxer
319 - Playstation Portable PMP format demuxer
320 - PCM format support in OMA demuxer
322 - Dxtory capture format decoder
323 - v410 QuickTime uncompressed 4:4:4 10-bit encoder and decoder
325 - Simple segmenting muxer
332 - E-AC-3 audio encoder
333 - ac3enc: add channel coupling support
334 - floating-point sample format support for (E-)AC-3, DCA, AAC, Vorbis decoders
335 - H.264/MPEG frame-level multithreading
336 - av_metadata_* functions renamed to av_dict_* and moved to libavutil
337 - 4:4:4 H.264 decoding support
338 - 10-bit H.264 optimizations for x86
339 - bump libswscale for recently reported ABI break
344 - VP8 frame-level multithreading
345 - NEON optimizations for VP8
346 - removed a lot of deprecated API cruft
347 - FFT and IMDCT optimizations for AVX (Sandy Bridge) processors
349 - SMPTE 302M AES3 audio decoder
350 - ffmpeg no longer quits after the 'q' key is pressed; use 'ctrl+c' instead
351 - 9bit and 10bit per sample support in the H.264 decoder
356 - WebM support in Matroska de/muxer
357 - low overhead Ogg muxing
359 - VP8 de/encoding via libvpx
360 - Demuxer for On2's IVF format
361 - Pictor/PC Paint decoder
363 - libfaad2 wrapper removed
364 - DTS-ES extension (XCh) decoding support
366 - RTSP tunneling over HTTP
367 - RTP depacketization of SVQ3
368 - -strict inofficial replaced by -strict unofficial
369 - ffplay -exitonkeydown and -exitonmousedown options added
370 - native GSM / GSM MS decoder
371 - RTP depacketization of QDM2
372 - ANSI/ASCII art playback system
373 - Lego Mindstorms RSO de/muxer
374 - SubRip subtitle file muxer and demuxer
375 - Chinese AVS encoding via libxavs
376 - ffprobe -show_packets option added
377 - RTP packetization of Theora and Vorbis
378 - RTP depacketization of MP4A-LATM
379 - RTP packetization and depacketization of VP8
381 - Apple HTTP Live Streaming demuxer
384 - G.722 ADPCM audio encoder/decoder
387 - frei0r wrapper filter
388 - change crop filter syntax to width:height:x:y
389 - make the crop filter accept parametric expressions
390 - make ffprobe accept AVFormatContext options
393 - Demuxer for Leitch/Harris' VR native stream format (LXF)
394 - RTP depacketization of the X-QT QuickTime format
395 - SAP (Session Announcement Protocol, RFC 2974) muxer and demuxer
397 - ffmpeg -crop* options removed
398 - transpose filter added
399 - ffmpeg -force_key_frames option added
400 - demuxer for receiving raw rtp:// URLs without an SDP description
401 - single stream LATM/LOAS decoder
402 - setpts filter added
403 - Win64 support for optimized x86 assembly functions
404 - MJPEG/AVI1 to JPEG/JFIF bitstream filter
405 - ASS subtitle encoder and decoder
406 - IEC 61937 encapsulation for E-AC-3, TrueHD, DTS-HD (for HDMI passthrough)
407 - overlay filter added
408 - rename aspect filter to setdar, and pixelaspect to setsar
410 - Mobotix .mxg demuxer
411 - frei0r source added
412 - hqdn3d filter added
413 - RTP depacketization of QCELP
415 - gradfun filter added
417 - replace the ocv_smooth filter with a more generic ocv filter
418 - Windows Televison (WTV) demuxer
419 - FFmpeg metadata format muxer and demuxer
420 - SubRip (srt) subtitle decoder
421 - floating-point AC-3 encoder added
423 - ffmpeg -copytb option added
425 - Wing Commander IV movies decoder added
427 - Bink version 'b' audio and video decoder
428 - Bitmap Brothers JV playback system
429 - Apple HTTP Live Streaming protocol handler
430 - sndio support for playback and record
431 - Linux framebuffer input device added
432 - Chronomaster DFA decoder
433 - Mobotix MxPEG decoder
434 - AAC encoding via libvo-aacenc
435 - AMR-WB encoding via libvo-amrwbenc
437 - fieldorder video filter added
442 - PB-frame decoding for H.263
443 - deprecated vhook subsystem removed
444 - deprecated old scaler removed
446 - Alpha channel scaler
448 - RTP packetization of H.263
449 - RTP packetization of AMR
450 - RTP depacketization of Vorbis
451 - CorePNG decoding support
452 - Cook multichannel decoding support
453 - introduced avlanguage helpers in libavformat
454 - 8088flex TMV demuxer and decoder
455 - per-stream language-tags extraction in asfdec
456 - V210 decoder and encoder
457 - remaining GPL parts in AC-3 decoder converted to LGPL
459 - SoX native format muxer and demuxer
460 - AMR-NB decoding/encoding, AMR-WB decoding via OpenCORE libraries
462 - Electronic Arts Madcow decoder
463 - DivX (XSUB) subtitle encoder
464 - nonfree libamr support for AMR-NB/WB decoding/encoding removed
465 - experimental AAC encoder
466 - RTP depacketization of ASF and RTSP from WMS servers
467 - RTMP support in libavformat
468 - noX handling for OPT_BOOL X options
470 - IEC-61937 compatible Muxer
472 - Bluray (PGS) subtitle decoder
473 - LPCM support in MPEG-TS (HDMV RID as found on Blu-ray disks)
475 - Core Audio Format demuxer
477 - MD STUDIO audio demuxer
478 - RF64 support in WAV demuxer
479 - MPEG-4 Audio Lossless Coding (ALS) decoder
480 - -formats option split into -formats, -codecs, -bsfs, and -protocols
482 - CDG demuxer and decoder
484 - Auravision Aura 1 and 2 decoders
485 - Deluxe Paint Animation playback system
487 - Adobe Filmstrip muxer and demuxer
488 - RTP depacketization of H.263
489 - Bink demuxer and audio/video decoders
490 - enable symbol versioning by default for linkers that support it
491 - IFF PBM/ILBM bitmap decoder
494 - RTP depacketization of AMR
500 - Kega Game Video (KGV1) decoder
501 - VorbisComment writing for FLAC, Ogg FLAC and Ogg Speex files
502 - RTP depacketization of Theora
503 - HTTP Digest authentication
504 - RTMP/RTMPT/RTMPS/RTMPE/RTMPTE protocol support via librtmp
505 - Psygnosis YOP demuxer and video decoder
506 - spectral extension support in the E-AC-3 decoder
507 - unsharp video filter
508 - RTP hinting in the mov/3gp/mp4 muxer
509 - Dirac in Ogg demuxing
510 - seek to keyframes in Ogg
511 - 4:2:2 and 4:4:4 Theora decoding
512 - 35% faster VP3/Theora decoding
513 - faster AAC decoding
514 - faster H.264 decoding
515 - RealAudio 1.0 (14.4K) encoder
520 - DV50 AKA DVCPRO50 encoder, decoder, muxer and demuxer
521 - TechSmith Camtasia (TSCC) video decoder
522 - IBM Ultimotion (ULTI) video decoder
523 - Sierra Online audio file demuxer and decoder
524 - Apple QuickDraw (qdrw) video decoder
525 - Creative ADPCM audio decoder (16 bits as well as 8 bits schemes)
526 - Electronic Arts Multimedia (WVE/UV2/etc.) file demuxer
527 - Miro VideoXL (VIXL) video decoder
528 - H.261 video encoder
530 - Nullsoft Video (NSV) file demuxer
531 - Shorten audio decoder
533 - Apple Lossless Audio Codec (ALAC) decoder
534 - Winnov WNV1 video decoder
535 - Autodesk Animator Studio Codec (AASC) decoder
536 - Indeo 2 video decoder
537 - Fraps FPS1 video decoder
538 - Snow video encoder/decoder
539 - Sonic audio encoder/decoder
540 - Vorbis audio decoder
541 - Macromedia ADPCM decoder
542 - Duck TrueMotion 2 video decoder
543 - support for decoding FLX and DTA extensions in FLIC files
544 - H.264 custom quantization matrices support
545 - ffserver fixed, it should now be usable again
547 - Real Cooker audio decoder
548 - TrueSpeech audio decoder
549 - WMA2 audio decoder fixed, now all files should play correctly
550 - RealAudio 14.4 and 28.8 decoders fixed
552 - build system improvements
553 - tabs and trailing whitespace removed from the codebase
554 - CamStudio video decoder
555 - AIFF/AIFF-C audio format, encoding and decoding
556 - ADTS AAC file reading and writing
557 - Creative VOC file reading and writing
558 - American Laser Games multimedia (*.mm) playback system
559 - Zip Motion Blocks Video decoder
560 - improved Theora/VP3 decoder
561 - True Audio (TTA) decoder
562 - AVS demuxer and video decoder
564 - Smacker demuxer and decoder
565 - NuppelVideo/MythTV demuxer and RTjpeg decoder
567 - MPEG-2 intra VLC support
568 - MPEG-2 4:2:2 encoder
569 - Flash Screen Video decoder
571 - Chinese AVS decoder
574 - VC-1/WMV3/WMV9 video decoder
577 - VMware video decoder
580 - WavPack lossless audio decoder
581 - Targa (.TGA) picture decoder
582 - Vorbis audio encoder
583 - Delphine Software .cin demuxer/audio and video decoder
584 - Tiertex .seq demuxer/video decoder
586 - TIFF picture encoder and decoder
587 - GIF picture decoder
588 - Intel Music Coder decoder
589 - Zip Motion Blocks Video encoder
591 - Flash Screen Video encoder
592 - Theora encoding via libtheora
595 - GSM-MS encoder and decoder
597 - DXA demuxer and decoder
599 - Gamecube movie (.THP) playback system
600 - Blackfin optimizations
601 - Interplay C93 demuxer and video decoder
602 - Bethsoft VID demuxer and video decoder
605 - V.Flash PTX decoder
606 - RoQ muxer, RoQ audio encoder
607 - Renderware TXD demuxer and decoder
608 - extern C declarations for C++ removed from headers
609 - sws_flags command line option
613 - OS/2 support removed and restored again
616 - additional SPARC (VIS) optimizations
618 - slice-based parallel H.264 decoding
619 - Monkey's Audio demuxer and decoder
620 - AMV audio and video decoder
622 - H.264 PAFF decoding
623 - Nellymoser ASAO decoder
624 - Beam Software SIFF demuxer and decoder
625 - libvorbis Vorbis decoding removed in favor of native decoder
626 - IntraX8 (J-Frame) subdecoder for WMV2 and VC-1
627 - Ogg (Theora, Vorbis and FLAC) muxer
628 - The "device" muxers and demuxers are now in a new libavdevice library
629 - PC Paintbrush PCX decoder
630 - Sun Rasterfile decoder
631 - TechnoTrend PVA demuxer
632 - Linux Media Labs MPEG-4 (LMLM4) demuxer
633 - AVM2 (Flash 9) SWF muxer
634 - QT variant of IMA ADPCM encoder
636 - iPod/iPhone compatible mp4 muxer
638 - MSN TCP Webcam stream demuxer
639 - RL2 demuxer / decoder
642 - non-recursive Makefiles
644 - MAXIS EA XA (.xa) demuxer / decoder
648 - Electronic Arts CMV decoder
649 - Motion Pixels Video decoder
650 - Motion Pixels MVI demuxer
651 - removed animated GIF decoder/demuxer
652 - D-Cinema audio muxer
653 - Electronic Arts TGV decoder
654 - Apple Lossless Audio Codec (ALAC) encoder
656 - floating point PCM encoder/decoder
658 - DV100 AKA DVCPRO HD decoder and demuxer
659 - E-AC-3 support added to AC-3 decoder
660 - Nellymoser ASAO encoder
661 - ASS and SSA demuxer and muxer
662 - liba52 wrapper removed
663 - SVQ3 watermark decoding support
664 - Speex decoding via libspeex
665 - Electronic Arts TGQ decoder
667 - QCELP / PureVoice decoder
669 - hybrid WavPack support
670 - R3D REDCODE demuxer
671 - ALSA support for playback and record
672 - Electronic Arts TQI decoder
673 - OpenJPEG based JPEG 2000 decoder
674 - NC (NC4600) camera file demuxer
675 - Gopher client support
677 - generic metadata API
682 - DV encoder, DV muxer
683 - Microsoft RLE video decoder
684 - Microsoft Video-1 decoder
685 - Apple Animation (RLE) decoder
686 - Apple Graphics (SMC) decoder
687 - Apple Video (RPZA) decoder
689 - Sega FILM (CPK) file demuxer
690 - Westwood multimedia support (VQA & AUD files)
691 - Id Quake II CIN playback support
693 - FLIC playback support
694 - RealVideo 2.0 (RV20) decoder
695 - Duck TrueMotion v1 (DUCK) video decoder
696 - Sierra VMD demuxer and video decoder
697 - MSZH and ZLIB decoder support
701 - rate distortion optimal cbp support
702 - rate distorted optimal ac prediction for MPEG-4
703 - rate distorted optimal lambda->qp support
704 - AAC encoding with libfaac
705 - Sunplus JPEG codec (SP5X) support
706 - use Lagrange multipler instead of QP for ratecontrol
707 - Theora/VP3 decoding support
708 - XA and ADX ADPCM codecs
709 - export MPEG-2 active display area / pan scan
710 - Add support for configuring with IBM XLC
711 - floating point AAN DCT
712 - initial support for zygo video (not complete)
714 - new audio/video parser API
716 - av_read_frame() and av_seek_frame() support
717 - missing last frame fixes
718 - seek by mouse in ffplay
719 - noise reduction of DCT coefficients
720 - H.263 OBMC & 4MV support
721 - H.263 alternative inter vlc support
723 - H.263 slice structured mode
724 - interlaced DCT support for MPEG-2 encoding
725 - stuffing to stay above min_bitrate
726 - MB type & QP visualization
727 - frame stepping for ffplay
728 - interlaced motion estimation
729 - alternate scantable support
730 - SVCD scan offset support
733 - quantizer noise shaping
734 - G.726 ADPCM audio codec
736 - multithreaded/SMP motion estimation
737 - multithreaded/SMP encoding for MPEG-1/MPEG-2/MPEG-4/H.263
738 - multithreaded/SMP decoding for MPEG-2
740 - Metrowerks CodeWarrior suppport
741 - H.263+ custom pcf support
742 - nicer output for 'ffmpeg -formats'
744 - SGI image format, encoding and decoding
745 - H.264 loop filter support
746 - H.264 CABAC support
747 - nicer looking arrows for the motion vector visualization
748 - improved VCD support
749 - audio timestamp drift compensation
750 - MPEG-2 YUV 422/444 support
751 - polyphase kaiser windowed sinc and blackman nuttall windowed sinc audio resample
752 - better image scaling
754 - correctly interleave packets during encoding
755 - VIS optimized motion compensation
756 - intra_dc_precision>0 encoding support
757 - support reuse of motion vectors/MB types/field select values of the source video
758 - more accurate deblock filter
760 - many optimizations and bugfixes
761 - FunCom ISS audio file demuxer and according ADPCM decoding
766 - MPEG-2 video encoding (Michael)
767 - Id RoQ playback subsystem (Mike Melanson and Tim Ferguson)
768 - Wing Commander III Movie (.mve) file playback subsystem (Mike Melanson
770 - Xan DPCM audio decoder (Mario Brito)
771 - Interplay MVE playback subsystem (Mike Melanson)
772 - Duck DK3 and DK4 ADPCM audio decoders (Mike Melanson)
777 - RealAudio 1.0 (14_4) and 2.0 (28_8) native decoders. Author unknown, code from mplayerhq
778 (originally from public domain player for Amiga at http://www.honeypot.net/audio)
779 - current version now also compiles with older GCC (Fabrice)
780 - 4X multimedia playback system including 4xm file demuxer (Mike
781 Melanson), and 4X video and audio codecs (Michael)
782 - Creative YUV (CYUV) decoder (Mike Melanson)
783 - FFV1 codec (our very simple lossless intra only codec, compresses much better
784 than HuffYUV) (Michael)
785 - ASV1 (Asus), H.264, Intel indeo3 codecs have been added (various)
786 - tiny PNG encoder and decoder, tiny GIF decoder, PAM decoder (PPM with
787 alpha support), JPEG YUV colorspace support. (Fabrice Bellard)
788 - ffplay has been replaced with a newer version which uses SDL (optionally)
789 for multiplatform support (Fabrice)
790 - Sorenson Version 3 codec (SVQ3) support has been added (decoding only) - donated
792 - AMR format has been added (Johannes Carlsson)
793 - 3GP support has been added (Johannes Carlsson)
794 - VP3 codec has been added (Mike Melanson)
795 - more MPEG-1/2 fixes
796 - better multiplatform support, MS Visual Studio fixes (various)
797 - AltiVec optimizations (Magnus Damn and others)
798 - SH4 processor support has been added (BERO)
799 - new public interfaces (avcodec_get_pix_fmt) (Roman Shaposhnick)
800 - VOB streaming support (Brian Foley)
801 - better MP3 autodetection (Andriy Rysin)
802 - qpel encoding (Michael)
803 - 4mv+b frames encoding finally fixed (Michael)
804 - chroma ME (Michael)
805 - 5 comparison functions for ME (Michael)
806 - B-frame encoding speedup (Michael)
807 - WMV2 codec (unfinished - Michael)
808 - user specified diamond size for EPZS (Michael)
809 - Playstation STR playback subsystem, still experimental (Mike and Michael)
810 - ASV2 codec (Michael)
811 - CLJR decoder (Alex)
813 .. And lots more new enhancements and fixes.
818 - completely new integer only MPEG audio layer 1/2/3 decoder rewritten
820 - Recoded DCT and motion vector search with gcc (no longer depends on nasm)
821 - fix quantization bug in AC3 encoder
822 - added PCM codecs and format. Corrected WAV/AVI/ASF PCM issues
823 - added prototype ffplay program
824 - added GOB header parsing on H.263/H.263+ decoder (Juanjo)
825 - bug fix on MCBPC tables of H.263 (Juanjo)
826 - bug fix on DC coefficients of H.263 (Juanjo)
827 - added Advanced Prediction Mode on H.263/H.263+ decoder (Juanjo)
828 - now we can decode H.263 streams found in QuickTime files (Juanjo)
829 - now we can decode H.263 streams found in VIVO v1 files(Juanjo)
830 - preliminary RTP "friendly" mode for H.263/H.263+ coding. (Juanjo)
831 - added GOB header for H.263/H.263+ coding on RTP mode (Juanjo)
832 - now H.263 picture size is returned on the first decoded frame (Juanjo)
833 - added first regression tests
834 - added MPEG-2 TS demuxer
835 - new demux API for libav
836 - more accurate and faster IDCT (Michael)
837 - faster and entropy-controlled motion search (Michael)
838 - two pass video encoding (Michael)
839 - new video rate control (Michael)
840 - added MSMPEG4V1, MSMPEGV2 and WMV1 support (Michael)
841 - great performance improvement of video encoders and decoders (Michael)
842 - new and faster bit readers and vlc parsers (Michael)
843 - high quality encoding mode: tries all macroblock/VLC types (Michael)
844 - added DV video decoder
845 - preliminary RTP/RTSP support in ffserver and libavformat
846 - H.263+ AIC decoding/encoding support (Juanjo)
847 - VCD MPEG-PS mode (Juanjo)
848 - PSNR stuff (Juanjo)
849 - simple stats output (Juanjo)
850 - 16-bit and 15-bit RGB/BGR/GBR support (Bisqwit)
855 - some header fixes (Zdenek Kabelac <kabi at informatics.muni.cz>)
856 - many MMX optimizations (Nick Kurshev <nickols_k at mail.ru>)
857 - added configure system (actually a small shell script)
858 - added MPEG audio layer 1/2/3 decoding using LGPL'ed mpglib by
859 Michael Hipp (temporary solution - waiting for integer only
861 - fixed VIDIOCSYNC interrupt
862 - added Intel H.263 decoding support ('I263' AVI fourCC)
863 - added Real Video 1.0 decoding (needs further testing)
864 - simplified image formats again. Added PGM format (=grey
865 pgm). Renamed old PGM to PGMYUV.
866 - fixed msmpeg4 slice issues (tell me if you still find problems)
867 - fixed OpenDivX bugs with newer versions (added VOL header decoding)
868 - added support for MPlayer interface
869 - added macroblock skip optimization
870 - added MJPEG decoder
871 - added mmx/mmxext IDCT from libmpeg2
872 - added pgmyuvpipe, ppm, and ppm_pipe formats (original patch by Celer
873 <celer at shell.scrypt.net>)
874 - added pixel format conversion layer (e.g. for MJPEG or PPM)
875 - added deinterlacing option
877 - MPEG-4 vol header fixes (Jonathan Marsden <snmjbm at pacbell.net>)
878 - ARM optimizations (Lionel Ulmer <lionel.ulmer at free.fr>).
879 - Windows porting of file converter
880 - added MJPEG raw format (input/ouput)
881 - added JPEG image format support (input/output)
886 - fixed some std header definitions (Bjorn Lindgren
887 <bjorn.e.lindgren at telia.com>).
888 - added MPEG demuxer (MPEG-1 and 2 compatible).
890 - added prototype RM demuxer
891 - added AC3 decoding (done with libac3 by Aaron Holtzman)
892 - added decoding codec parameter guessing (.e.g. for MPEG, because the
893 header does not include them)
894 - fixed header generation in MPEG-1, AVI and ASF muxer: wmplayer can now
895 play them (only tested video)
896 - fixed H.263 white bug
897 - fixed phase rounding in img resample filter
898 - add MMX code for polyphase img resample filter
899 - added CPU autodetection
900 - added generic title/author/copyright/comment string handling (ASF and RM
902 - added SWF demux to extract MP3 track (not usable yet because no MP3
904 - added fractional frame rate support
905 - codecs are no longer searched by read_header() (should fix ffserver
911 - BGR24 patch (initial patch by Jeroen Vreeken <pe1rxq at amsat.org>)
912 - fixed raw yuv output
913 - added motion rounding support in MPEG-4
914 - fixed motion bug rounding in MSMPEG4
915 - added B-frame handling in video core
916 - added full MPEG-1 decoding support
917 - added partial (frame only) MPEG-2 support
918 - changed the FOURCC code for H.263 to "U263" to be able to see the
919 +AVI/H.263 file with the UB Video H.263+ decoder. MPlayer works with
920 this +codec ;) (JuanJo).
921 - Halfpel motion estimation after MB type selection (JuanJo)
922 - added pgm and .Y.U.V output format
923 - suppressed 'img:' protocol. Simply use: /tmp/test%d.[pgm|Y] as input or
925 - added pgmpipe I/O format (original patch from Martin Aumueller
926 <lists at reserv.at>, but changed completely since we use a format
927 instead of a protocol)
932 - added H.263/MPEG-4/MSMPEG4 decoding support. MPEG-4 decoding support
933 (for OpenDivX) is almost complete: 8x8 MVs and rounding are
934 missing. MSMPEG4 support is complete.
935 - added prototype MPEG-1 decoder. Only I- and P-frames handled yet (it
936 can decode ffmpeg MPEGs :-)).
937 - added libavcodec API documentation (see apiexample.c).
938 - fixed image polyphase bug (the bottom of some images could be
940 - added support for non clipped motion vectors (decoding only)
941 and image sizes non-multiple of 16
942 - added support for AC prediction (decoding only)
943 - added file overwrite confirmation (can be disabled with -y)
944 - added custom size picture to H.263 using H.263+ (Juanjo)
949 - added MSMPEG4 (aka DivX) compatible encoder. Changed default codec
950 of AVI and ASF to DIV3.
951 - added -me option to set motion estimation method
952 (default=log). suppressed redundant -hq option.
953 - added options -acodec and -vcodec to force a given codec (useful for
956 - improved dct_quantize speed
957 - factorized some motion estimation code
962 - removing grab code from ffserver and moved it to ffmpeg. Added
963 multistream support to ffmpeg.
964 - added timeshifting support for live feeds (option ?date=xxx in the
966 - added high quality image resize code with polyphase filter (need
967 mmx/see optimization). Enable multiple image size support in ffserver.
968 - added multi live feed support in ffserver
969 - suppressed master feature from ffserver (it should be done with an
970 external program which opens the .ffm url and writes it to another
972 - added preliminary support for video stream parsing (WAV and AVI half
973 done). Added proper support for audio/video file conversion in
975 - added preliminary support for video file sending from ffserver
976 - redesigning I/O subsystem: now using URL based input and output
978 - added WAV format support
979 - added "tty user interface" to ffmpeg to stop grabbing gracefully
980 - added MMX/SSE optimizations to SAD (Sums of Absolutes Differences)
981 (Juan J. Sierralta P. a.k.a. "Juanjo" <juanjo at atmlab.utfsm.cl>)
982 - added MMX DCT from mpeg2_movie 1.5 (Juanjo)
983 - added new motion estimation algorithms, log and phods (Juanjo)
984 - changed directories: libav for format handling, libavcodec for
990 - added stereo in MPEG audio encoder
995 - added 'high quality' mode which use motion vectors. It can be used in
996 real time at low resolution.
997 - fixed rounding problems which caused quality problems at high
998 bitrates and large GOP size
1001 version 0.3.2: small fixes
1007 version 0.3.1: added avi/divx support
1010 - added MPEG-4 codec compatible with OpenDivX. It is based on the H.263 codec
1011 - added sound for flash format (not tested)
1014 version 0.3: initial public release