[libav.git] / Changelog
1version 0.4.7:
3- qpel encoding (Michael)
4- 4mv+b frames encoding finally fixed (Michael)
5- chroma ME (Michael)
6- 5 comparission functions for ME (Michael)
7- b frame encoding speedup (Michael)
8- wmv2 codec (unfinished)
9- user specified diamond size for EPZS (Michael)
11version 0.4.6:
739d6efa 12
13- completely new integer only mpeg audio layer 1/2/3 decoder rewritten
14 from scratch.
15- recoded dct and motion vector search with gcc (no longer depends on
16 nasm).
17- fix quantization bug in AC3 encoder.
18- added PCM codecs and format. Corrected wav/avi/asf pcm issues.
19- added prototype ffplay program.
20- added GOB header parsing on H.263/H.263+ decoder. (Juanjo)
21- bug fix on MCBPC tables of H.263. (Juanjo)
81401c1f 22- bug fix on DC coefficients of H.263. (Juanjo)
23- added Advanced Prediction Mode on H.263/H.263+ decoder. (Juanjo)
24- now we can decode H.263 streams found on QuickTime files. (Juanjo)
25- now we can decode H.263 streams found on VIVO v1 files.(Juanjo)
26- preliminary RTP "friendly" mode for H.263/H.263+ coding. (Juanjo)
27- added GOB header for H.263/H.263+ coding on RTP mode. (Juanjo)
28- now H.263 picture size is returned on the first decoded frame. (Juanjo)
7f913a35 29- added first regression tests
30- added MPEG2 TS demux
31- new demux API for libav
32- more accurate and faster IDCT (Michael)
33- faster and entropy controlled motion search (Michael)
34- two pass video encoding (Michael)
35- new video rate control (Michael)
36- added MSMPEG4V1, MSMPEGV2 and WMV1 support (Michael)
37- great performance improvement of video encoders and decoders (Michael)
38- new and faster bit readers and vlc parsers (Michael)
39- high quality encoding mode : tries all macroblock/VLC types (Michael)
40- added DV video decoder
41- preliminary RTP/RTSP support in ffserver and libavformat
b963ee3b 42- H.263+ AIC decoding/encoding support. (Juanjo)
43- VCD MPEG-PS mode. (Juanjo)
44- PSNR stuff. (Juanjo)
45- Simple stats output. (Juanjo)
a32072d0 46- 16-bit and 15-bit rgb/bgr/gbr support (Bisqwit)
739d6efa 47
48version 0.4.5:
50- some header fixes (Zdenek Kabelac <kabi@informatics.muni.cz>).
51- many MMX optimizations (Nick Kurshev <nickols_k@mail.ru>).
52- added configure system (actually a small shell script).
53- added mpeg audio layer 1/2/3 decoding using LGPL'ed mpglib by
54 Michael Hipp (temporary solution - waiting for integer only
55 decoder).
56- fixed VIDIOCSYNC interrupt.
57- added Intel H263 decoding support ('I263' avi fourCC)
58- added Real Video 1.0 decoding (needs further testing).
59- simplified image formats again. Added PGM format (=grey
60 pgm). Renamed old PGM to PGMYUV.
61- fixed msmpeg4 slice issues (tell me if you still find problems).
62- fixed opendivx bugs with newer versions (added VOL header decoding).
63- added support for mplayer interface.
16fbebe1 64- added macroblock skip optimization.
0c1e384c 65- added MJPEG decoder.
16fbebe1 66- added mmx/mmxext idct from libmpeg2.
67- added pgmyuvpipe, ppm, and ppm_pipe formats (original patch by Celer
68 <celer@shell.scrypt.net>).
69- added pixel format convertion layer (e.g. for MJPEG or PPM).
70- added deinterlacing option.
71- mpeg1/2 fixes.
72- mpeg4 vol header fixes (Jonathan Marsden <snmjbm@pacbell.net>).
73- ARM optimizations (Lionel Ulmer <lionel.ulmer@free.fr>).
74- Windows porting of file converter.
75- added MJPEG raw format (input/ouput).
76- added JPEG image format support (input/output).
78version 0.4.4:
80- fixed some std header definitions (Bjorn Lindgren
81 <bjorn.e.lindgren@telia.com>).
82- added mpeg demux (mpeg 1 and 2 compatible).
83- added ASF demux.
84- added prototype RM demux.
85- added AC3 decoding (done with libac3 by Aaron Holtzman).
86- added decoding codec parameter guessing (.e.g. for mpeg, because the
87 header does not include them).
88- fixed header generation in mpeg1, AVI and ASF mux : wmplayer can now
89 play them (only tested video).
90- fixed h263 white bug.
91- fixed phase rounding in img resample filter.
92- add mmx code for polyphase img resample filter.
93- added CPU autodetect.
94- added generic title/author/copyright/comment string handling (ASF and RM use them).
95- added SWF demux to extract MP3 track (not usable yet because no MP3
96 decoder).
97- added fractional frame rate support.
98- codecs are no longer searched by read_header() (should fix ffserver
99 segfault).
101version 0.4.3:
103- BGR24 patch (initial patch by Jeroen Vreeken <pe1rxq@amsat.org>).
104- fixed raw yuv output.
105- added motion rounding support in MPEG4.
106- fixed motion bug rounding in MSMPEG4.
107- added B frame handling in video core.
108- added full MPEG1 decoding support.
109- added partial (frame only) MPEG2 support.
110- changed the FOURCC code for H.263 to "U263" to be able to see the
111+AVI/H.263 file with the UB Video H.263+ decoder. MPlayer works with
112this +codec ;) (JuanJo).
113- Halfpel motion estimation after mb type selection (JuanJo).
114- added pgm and .Y.U.V output format.
115- suppressed 'img:' protocol. Simply use: /tmp/test%d.[pgm|Y] as input or
116 output.
117- added pgmpipe I/O format (original patch from Martin Aumueller
118 <lists@reserv.at>, but changed completely since we use a format
119 instead of a protocol).
121version 0.4.2:
123- added H263/MPEG4/MSMPEG4 decoding support. MPEG4 decoding support
124 (for openDIVX) is almost complete: 8x8 MVs and rounding are
125 missing. MSMPEG4 support is complete.
126- added prototype MPEG1 decoder. Only I and P frames handled yet (it
127 can decode ffmpeg mpegs :-)).
128- added libavcodec API documentation (see apiexample.c).
129- fixed image polyphase bug (the bottom of some images could be
130 greenish).
131- added support for non clipped motion vectors (decoding only)
132 and image sizes non multiple of 16.
133- added support for AC prediction (decoding only).
134- added file overwrite confirmation (can be disabled with -y).
135- Added custom size picture to H.263 using H.263+ (Juanjo).
137version 0.4.1:
139- added MSMPEG4 (aka DIVX) compatible encoder. Changed default codec
140 of avi and asf to DIV3.
141- added -me option to set motion estimation method
142 (default=log). suppressed redundant -hq option.
143- added options -acodec and -vcodec to force a given codec (useful for
144 AVI for example).
145- fixed -an option.
146- improved dct_quantize speed.
147- factorized some motion estimation code.
149version 0.4.0:
151- removing grab code from ffserver and moved it to ffmpeg. Added multi
152 stream support to ffmpeg.
153- added timeshifting support for live feeds (option ?date=xxx in the
154 URL).
155- added high quality image resize code with polyphase filter (need
156 mmx/see optimisation). Enable multiple image size support in ffserver.
157- added multi live feed support in ffserver.
158- suppressed master feature from ffserver (it should be done with an
159 external program which opens the .ffm url and writes it to another
160 ffserver).
161- added preliminary support for video stream parsing (wav and avi half
162 done). Added proper support for audio/video file convertion in
163 ffmpeg.
164- added preliminary support for video file sending from ffserver.
165- redesigning I/O subsystem : now using URL based input and output
166 (see avio.h).
167- added wav format support.
168- added "tty user interface" to ffmpeg to stop grabbing gracefully.
169- added MMX/SSE optimizations to SAD (Sums of Absolutes Diferences)
170 (Juan J. Sierralta P. a.k.a. "Juanjo" <juanjo@atmlab.utfsm.cl>).
171- added MMX DCT from mpeg2_movie 1.5 (Juanjo).
172- added new motion estimation algorithms, log and phods (Juanjo).
173- changed directories : libav for format handling, libavcodec for
174 codecs.
176version 0.3.4:
178- added stereo in mpeg audio encoder.
180version 0.3.3:
182- added 'high quality' mode which use motion vectors. It can be used in
183 real time at low resolution.
184- fixed rounding problems which caused quality problems at high
185 bitrates and large gop size.
187version 0.3.2: small fixes
189- asf fixes
190- put_seek bug fix
192version 0.3.1: added avi/divx support
194- added avi support
195- added mpeg4 codec compatible with open divx. It is based on the h263
196 codec.
197- added sound for flash format (not tested)
199version 0.3: initial public release