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[libav.git] / Changelog
1version 0.4.9-pre1:
4fa1c4fa 3- DV encoder, DV muxer
4- Microsoft RLE video decoder
5- Microsoft Video-1 decoder
070ed1bc 6- Apple Animation (RLE) decoder
42cad81a 7- Apple Graphics (SMC) decoder
8- Apple Video (RPZA) decoder
9- Cinepak decoder
10- Sega FILM (CPK) file demuxer
42cad81a 11- Westwood multimedia support (VQA & AUD files)
4120a53a 12- Id Quake II CIN playback support
13- 8BPS video decoder
14- FLIC playback support
15- RealVideo 2.0 (RV20) decoder
16- Duck TrueMotion v1 (DUCK) video decoder
da00f30e 17- Sierra VMD demuxer and video decoder
1defd2a8 18- MSZH and ZLIB decoder support
3b64893d 19- SVQ1 video encoder
20- AMR-WB support
21- PPC optimisations
22- rate distortion optimal cbp support
23- rate distorted optimal ac prediction for mpeg4
24- rate distorted optimal lambda->qp support
25- AAC encoding with libfaac
26- Sunplus JPEG codec (SP5X) support
27- use lagrange multipler instead of qp for ratecontrol
28- theora/VP3 decoding support
29- XA and ADX ADPCM codecs
30- export mpeg2 active display area / pan scan
31- Add support for configuring with IBM XLC
32- floating point AAN DCT
33- initial support for zygovideo (not complete)
34- rgb ffv1 support
35- new audio/video parser API
36- av_log() system
37- av_read_frame() and av_seek_frame() support
38- missing last frame fixes
39- seek by mouse in ffplay
40- noise reduction of dct coefficients
41- h263 OBMC & 4MV support
42- h263 alternative inter vlc support
43- h263 loop filter
44- h263 slice structured mode
45- interlaced DCT support for MPEG2 encoding
46- stuffing to stay above min_bitrate
47- mb type & qp vissualization
48- frame stepping for ffplay
49- interlaced motion estimation
50- alternate scantable support
51- SVCD scan offset support
52- closed gop support
53- SSE2 fdct
54- quantizer noise shaping
55- G.726 ADPCM audio codec
56- MS ADPCM encoding
57- multithreaded/SMP motion estimation
58- multithreaded/SMP encoding for MPEG1/MPEG2/MPEG4/H263
59- multithreaded/SMP decoding for MPEG2
60- FLAC decoder
61- Metrowerks CodeWarrior suppport
62- h263+ custom pcf support
63- nicer output for 'ffmpeg -formats'
64- matroska demuxer
65- SGI image format, encoding and decoding
66- h264 loop filter support
67- h264 CABAC support
68- nicer looking arrows for the motion vector vissualization
69- improved VCD support
70- audio timestamp drift compensation
71- mpeg2 YUV 422/444 support
72- polyphase kaiser windowed sinc and blackman nuttall windowed sinc audio resample
73- better image scaling
74- h261 support
75- correctly interleave packets during encoding
76- VIS optimized motion compensation
77- intra_dc_precission>0 encoding support
78- support reuse of motion vectors/mb types/field select values of the source video
79- more accurate deblock filter
80- padding support
81- many optimizations and bugfixes
2fdf638b 82
83version 0.4.8:
85- MPEG2 video encoding (Michael)
d9d8910b 86- Id RoQ playback subsystem (Mike Melanson and Tim Ferguson)
87- Wing Commander III Movie (.mve) file playback subsystem (Mike Melanson
88 and Mario Brito)
89- Xan DPCM audio decoder (Mario Brito)
186447f8 90- Interplay MVE playback subsystem (Mike Melanson)
91- Duck DK3 and DK4 ADPCM audio decoders (Mike Melanson)
93version 0.4.7:
e07702ba 94
95- RealAudio 1.0 (14_4) and 2.0 (28_8) native decoders. Author unknown, code from a mplayerhq
96 (originally from public domain player for Amiga at
82853318 97- Current version now also compiles with older GCC (Fabrice)
98- 4X multimedia playback system including 4xm file demuxer (Mike
99 Melanson), and 4X video and audio codecs (Michael)
100- Creative YUV (CYUV) decoder (Mike Melanson)
101- FFV1 codec (our very simple lossless intra only codec, compresses much better
102 then huffyuv) (Michael)
103- ASV1 (Asus), H.264, Intel indeo3 codecs has been added (Various)
104- Tiny PNG encoder and decoder, tiny GIF decoder, PAM decoder (PPM with
105 alpha support), JPEG YUV colorspace support. (Fabrice Bellard)
106- ffplay has been replaced with a newer version which uses SDL (optionally)
107 for multi platform support (fabrice)
108- Sorenson Version 3 codec (SVQ3) support has been added (decoding only) - donated
109 by anonymous
110- AMR format has been added (Johannes Carlsson)
82853318 111- 3gp support has been added (Johannes Carlsson)
112- VP3 codec has been added (Mike Melanson)
113- more MPEG-1/2 fixes
114- Better Multi platform support, MS Visual Studio fixes (various)
115- Altivec optimizations (Magnus Damn and others)
116- SH4 processor support has been added (BERO)
117- New public interfaces (avcodec_get_pix_fmt) (Roman Shaposhnick)
118- VOB Streaming support (Brian Foley)
119- Better MP3 Autodetection (Andriy Rysin)
120- qpel encoding (Michael)
121- 4mv+b frames encoding finally fixed (Michael)
122- chroma ME (Michael)
123- 5 comparission functions for ME (Michael)
124- b frame encoding speedup (Michael)
e07702ba 125- wmv2 codec (unfinished - Michael)
d3d10087 126- user specified diamond size for EPZS (Michael)
127- Playstation STR playback subsystem, still experimental (Mike and Michael)
128- ASV2 codec (Michael)
129- CLJR decoder (Alex)
d3d10087 130
131.. And lots more new enhances and fixes.
d3d10087 133version 0.4.6:
739d6efa 134
135- completely new integer only mpeg audio layer 1/2/3 decoder rewritten
136 from scratch.
137- recoded dct and motion vector search with gcc (no longer depends on
138 nasm).
139- fix quantization bug in AC3 encoder.
140- added PCM codecs and format. Corrected wav/avi/asf pcm issues.
141- added prototype ffplay program.
142- added GOB header parsing on H.263/H.263+ decoder. (Juanjo)
143- bug fix on MCBPC tables of H.263. (Juanjo)
81401c1f 144- bug fix on DC coefficients of H.263. (Juanjo)
145- added Advanced Prediction Mode on H.263/H.263+ decoder. (Juanjo)
146- now we can decode H.263 streams found on QuickTime files. (Juanjo)
147- now we can decode H.263 streams found on VIVO v1 files.(Juanjo)
148- preliminary RTP "friendly" mode for H.263/H.263+ coding. (Juanjo)
149- added GOB header for H.263/H.263+ coding on RTP mode. (Juanjo)
150- now H.263 picture size is returned on the first decoded frame. (Juanjo)
7f913a35 151- added first regression tests
152- added MPEG2 TS demux
153- new demux API for libav
154- more accurate and faster IDCT (Michael)
155- faster and entropy controlled motion search (Michael)
156- two pass video encoding (Michael)
157- new video rate control (Michael)
158- added MSMPEG4V1, MSMPEGV2 and WMV1 support (Michael)
159- great performance improvement of video encoders and decoders (Michael)
160- new and faster bit readers and vlc parsers (Michael)
161- high quality encoding mode : tries all macroblock/VLC types (Michael)
162- added DV video decoder
163- preliminary RTP/RTSP support in ffserver and libavformat
b963ee3b 164- H.263+ AIC decoding/encoding support. (Juanjo)
165- VCD MPEG-PS mode. (Juanjo)
166- PSNR stuff. (Juanjo)
167- Simple stats output. (Juanjo)
a32072d0 168- 16-bit and 15-bit rgb/bgr/gbr support (Bisqwit)
739d6efa 169
170version 0.4.5:
172- some header fixes (Zdenek Kabelac <>).
173- many MMX optimizations (Nick Kurshev <>).
174- added configure system (actually a small shell script).
175- added mpeg audio layer 1/2/3 decoding using LGPL'ed mpglib by
176 Michael Hipp (temporary solution - waiting for integer only
177 decoder).
178- fixed VIDIOCSYNC interrupt.
179- added Intel H263 decoding support ('I263' avi fourCC)
180- added Real Video 1.0 decoding (needs further testing).
181- simplified image formats again. Added PGM format (=grey
182 pgm). Renamed old PGM to PGMYUV.
183- fixed msmpeg4 slice issues (tell me if you still find problems).
184- fixed opendivx bugs with newer versions (added VOL header decoding).
185- added support for mplayer interface.
16fbebe1 186- added macroblock skip optimization.
0c1e384c 187- added MJPEG decoder.
16fbebe1 188- added mmx/mmxext idct from libmpeg2.
0c1e384c 189- added pgmyuvpipe, ppm, and ppm_pipe formats (original patch by Celer
e07702ba 190 <>).
191- added pixel format convertion layer (e.g. for MJPEG or PPM).
192- added deinterlacing option.
4a8c7a7f 193- mpeg1/2 fixes.
194- mpeg4 vol header fixes (Jonathan Marsden <>).
195- ARM optimizations (Lionel Ulmer <>).
4a8c7a7f 196- Windows porting of file converter.
197- added MJPEG raw format (input/ouput).
198- added JPEG image format support (input/output).
200version 0.4.4:
202- fixed some std header definitions (Bjorn Lindgren
e07702ba 203 <>).
204- added mpeg demux (mpeg 1 and 2 compatible).
205- added ASF demux.
206- added prototype RM demux.
207- added AC3 decoding (done with libac3 by Aaron Holtzman).
208- added decoding codec parameter guessing (.e.g. for mpeg, because the
209 header does not include them).
210- fixed header generation in mpeg1, AVI and ASF mux : wmplayer can now
211 play them (only tested video).
212- fixed h263 white bug.
213- fixed phase rounding in img resample filter.
214- add mmx code for polyphase img resample filter.
215- added CPU autodetect.
216- added generic title/author/copyright/comment string handling (ASF and RM use them).
217- added SWF demux to extract MP3 track (not usable yet because no MP3
218 decoder).
219- added fractional frame rate support.
220- codecs are no longer searched by read_header() (should fix ffserver
221 segfault).
223version 0.4.3:
e07702ba 225- BGR24 patch (initial patch by Jeroen Vreeken <>).
226- fixed raw yuv output.
227- added motion rounding support in MPEG4.
228- fixed motion bug rounding in MSMPEG4.
229- added B frame handling in video core.
230- added full MPEG1 decoding support.
231- added partial (frame only) MPEG2 support.
232- changed the FOURCC code for H.263 to "U263" to be able to see the
233+AVI/H.263 file with the UB Video H.263+ decoder. MPlayer works with
234this +codec ;) (JuanJo).
235- Halfpel motion estimation after mb type selection (JuanJo).
236- added pgm and .Y.U.V output format.
237- suppressed 'img:' protocol. Simply use: /tmp/test%d.[pgm|Y] as input or
238 output.
239- added pgmpipe I/O format (original patch from Martin Aumueller
e07702ba 240 <>, but changed completely since we use a format
241 instead of a protocol).
243version 0.4.2:
245- added H263/MPEG4/MSMPEG4 decoding support. MPEG4 decoding support
246 (for openDIVX) is almost complete: 8x8 MVs and rounding are
247 missing. MSMPEG4 support is complete.
248- added prototype MPEG1 decoder. Only I and P frames handled yet (it
249 can decode ffmpeg mpegs :-)).
250- added libavcodec API documentation (see apiexample.c).
251- fixed image polyphase bug (the bottom of some images could be
252 greenish).
253- added support for non clipped motion vectors (decoding only)
254 and image sizes non multiple of 16.
255- added support for AC prediction (decoding only).
256- added file overwrite confirmation (can be disabled with -y).
257- Added custom size picture to H.263 using H.263+ (Juanjo).
259version 0.4.1:
261- added MSMPEG4 (aka DIVX) compatible encoder. Changed default codec
262 of avi and asf to DIV3.
263- added -me option to set motion estimation method
264 (default=log). suppressed redundant -hq option.
265- added options -acodec and -vcodec to force a given codec (useful for
266 AVI for example).
267- fixed -an option.
268- improved dct_quantize speed.
269- factorized some motion estimation code.
271version 0.4.0:
273- removing grab code from ffserver and moved it to ffmpeg. Added multi
274 stream support to ffmpeg.
275- added timeshifting support for live feeds (option ?date=xxx in the
276 URL).
277- added high quality image resize code with polyphase filter (need
278 mmx/see optimisation). Enable multiple image size support in ffserver.
279- added multi live feed support in ffserver.
280- suppressed master feature from ffserver (it should be done with an
281 external program which opens the .ffm url and writes it to another
282 ffserver).
283- added preliminary support for video stream parsing (wav and avi half
284 done). Added proper support for audio/video file convertion in
285 ffmpeg.
286- added preliminary support for video file sending from ffserver.
287- redesigning I/O subsystem : now using URL based input and output
288 (see avio.h).
289- added wav format support.
290- added "tty user interface" to ffmpeg to stop grabbing gracefully.
291- added MMX/SSE optimizations to SAD (Sums of Absolutes Diferences)
e07702ba 292 (Juan J. Sierralta P. a.k.a. "Juanjo" <>).
293- added MMX DCT from mpeg2_movie 1.5 (Juanjo).
294- added new motion estimation algorithms, log and phods (Juanjo).
295- changed directories : libav for format handling, libavcodec for
296 codecs.
298version 0.3.4:
300- added stereo in mpeg audio encoder.
302version 0.3.3:
304- added 'high quality' mode which use motion vectors. It can be used in
305 real time at low resolution.
306- fixed rounding problems which caused quality problems at high
307 bitrates and large gop size.
309version 0.3.2: small fixes
311- asf fixes
312- put_seek bug fix
314version 0.3.1: added avi/divx support
316- added avi support
317- added mpeg4 codec compatible with open divx. It is based on the h263
318 codec.
319- added sound for flash format (not tested)
321version 0.3: initial public release