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[libav.git] / Changelog
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6d291820 1version 0.4.6pre1:
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3- completely new integer only mpeg audio layer 1/2/3 decoder rewritten
4 from scratch.
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5- recoded dct and motion vector search with gcc (no longer depends on
6 nasm).
7- fix quantization bug in AC3 encoder.
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8- added PCM codecs and format. Corrected wav/avi/asf pcm issues.
9- added prototype ffplay program.
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10- added GOB header parsing on H.263/H.263+ decoder. (Juanjo)
11- bug fix on MCBPC tables of H.263. (Juanjo)
81401c1f 12- bug fix on DC coefficients of H.263. (Juanjo)
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13- added Advanced Prediction Mode on H.263/H.263+ decoder. (Juanjo)
14- now we can decode H.263 streams found on QuickTime files. (Juanjo)
15- now we can decode H.263 streams found on VIVO v1 files.(Juanjo)
16- preliminary RTP "friendly" mode for H.263/H.263+ coding. (Juanjo)
17- added GOB header for H.263/H.263+ coding on RTP mode. (Juanjo)
18- now H.263 picture size is returned on the first decoded frame. (Juanjo)
7f913a35 19- added first regression tests
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20- added MPEG2 TS demux
21- new demux API for libav
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22- more accurate and faster IDCT (Michael)
23- faster and entropy controlled motion search (Michael)
24- two pass video encoding (Michael)
25- new video rate control (Michael)
26- added MSMPEG4V1, MSMPEGV2 and WMV1 support (Michael)
27- great performance improvement of video encoders and decoders (Michael)
28- new and faster bit readers and vlc parsers (Michael)
29- high quality encoding mode : tries all macroblock/VLC types (Michael)
30- added DV video decoder
31- preliminary RTP/RTSP support in ffserver and libavformat
b963ee3b 32- H.263+ AIC decoding/encoding support. (Juanjo)
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33- VCD MPEG-PS mode. (Juanjo)
34- PSNR stuff. (Juanjo)
35- Simple stats output. (Juanjo)
a32072d0 36- 16-bit and 15-bit rgb/bgr/gbr support (Bisqwit)
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38version 0.4.5:
39
40- some header fixes (Zdenek Kabelac <kabi@informatics.muni.cz>).
41- many MMX optimizations (Nick Kurshev <nickols_k@mail.ru>).
42- added configure system (actually a small shell script).
43- added mpeg audio layer 1/2/3 decoding using LGPL'ed mpglib by
44 Michael Hipp (temporary solution - waiting for integer only
45 decoder).
46- fixed VIDIOCSYNC interrupt.
47- added Intel H263 decoding support ('I263' avi fourCC)
48- added Real Video 1.0 decoding (needs further testing).
49- simplified image formats again. Added PGM format (=grey
50 pgm). Renamed old PGM to PGMYUV.
51- fixed msmpeg4 slice issues (tell me if you still find problems).
52- fixed opendivx bugs with newer versions (added VOL header decoding).
53- added support for mplayer interface.
16fbebe1 54- added macroblock skip optimization.
0c1e384c 55- added MJPEG decoder.
16fbebe1 56- added mmx/mmxext idct from libmpeg2.
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57- added pgmyuvpipe, ppm, and ppm_pipe formats (original patch by Celer
58 <celer@shell.scrypt.net>).
59- added pixel format convertion layer (e.g. for MJPEG or PPM).
60- added deinterlacing option.
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61- mpeg1/2 fixes.
62- mpeg4 vol header fixes (Jonathan Marsden <snmjbm@pacbell.net>).
63- ARM optimizations (Lionel Ulmer <lionel.ulmer@free.fr>).
64- Windows porting of file converter.
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65- added MJPEG raw format (input/ouput).
66- added JPEG image format support (input/output).
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67
68version 0.4.4:
69
70- fixed some std header definitions (Bjorn Lindgren
71 <bjorn.e.lindgren@telia.com>).
72- added mpeg demux (mpeg 1 and 2 compatible).
73- added ASF demux.
74- added prototype RM demux.
75- added AC3 decoding (done with libac3 by Aaron Holtzman).
76- added decoding codec parameter guessing (.e.g. for mpeg, because the
77 header does not include them).
78- fixed header generation in mpeg1, AVI and ASF mux : wmplayer can now
79 play them (only tested video).
80- fixed h263 white bug.
81- fixed phase rounding in img resample filter.
82- add mmx code for polyphase img resample filter.
83- added CPU autodetect.
84- added generic title/author/copyright/comment string handling (ASF and RM use them).
85- added SWF demux to extract MP3 track (not usable yet because no MP3
86 decoder).
87- added fractional frame rate support.
88- codecs are no longer searched by read_header() (should fix ffserver
89 segfault).
90
91version 0.4.3:
92
93- BGR24 patch (initial patch by Jeroen Vreeken <pe1rxq@amsat.org>).
94- fixed raw yuv output.
95- added motion rounding support in MPEG4.
96- fixed motion bug rounding in MSMPEG4.
97- added B frame handling in video core.
98- added full MPEG1 decoding support.
99- added partial (frame only) MPEG2 support.
100- changed the FOURCC code for H.263 to "U263" to be able to see the
101+AVI/H.263 file with the UB Video H.263+ decoder. MPlayer works with
102this +codec ;) (JuanJo).
103- Halfpel motion estimation after mb type selection (JuanJo).
104- added pgm and .Y.U.V output format.
105- suppressed 'img:' protocol. Simply use: /tmp/test%d.[pgm|Y] as input or
106 output.
107- added pgmpipe I/O format (original patch from Martin Aumueller
108 <lists@reserv.at>, but changed completely since we use a format
109 instead of a protocol).
110
111version 0.4.2:
112
113- added H263/MPEG4/MSMPEG4 decoding support. MPEG4 decoding support
114 (for openDIVX) is almost complete: 8x8 MVs and rounding are
115 missing. MSMPEG4 support is complete.
116- added prototype MPEG1 decoder. Only I and P frames handled yet (it
117 can decode ffmpeg mpegs :-)).
118- added libavcodec API documentation (see apiexample.c).
119- fixed image polyphase bug (the bottom of some images could be
120 greenish).
121- added support for non clipped motion vectors (decoding only)
122 and image sizes non multiple of 16.
123- added support for AC prediction (decoding only).
124- added file overwrite confirmation (can be disabled with -y).
125- Added custom size picture to H.263 using H.263+ (Juanjo).
126
127version 0.4.1:
128
129- added MSMPEG4 (aka DIVX) compatible encoder. Changed default codec
130 of avi and asf to DIV3.
131- added -me option to set motion estimation method
132 (default=log). suppressed redundant -hq option.
133- added options -acodec and -vcodec to force a given codec (useful for
134 AVI for example).
135- fixed -an option.
136- improved dct_quantize speed.
137- factorized some motion estimation code.
138
139version 0.4.0:
140
141- removing grab code from ffserver and moved it to ffmpeg. Added multi
142 stream support to ffmpeg.
143- added timeshifting support for live feeds (option ?date=xxx in the
144 URL).
145- added high quality image resize code with polyphase filter (need
146 mmx/see optimisation). Enable multiple image size support in ffserver.
147- added multi live feed support in ffserver.
148- suppressed master feature from ffserver (it should be done with an
149 external program which opens the .ffm url and writes it to another
150 ffserver).
151- added preliminary support for video stream parsing (wav and avi half
152 done). Added proper support for audio/video file convertion in
153 ffmpeg.
154- added preliminary support for video file sending from ffserver.
155- redesigning I/O subsystem : now using URL based input and output
156 (see avio.h).
157- added wav format support.
158- added "tty user interface" to ffmpeg to stop grabbing gracefully.
159- added MMX/SSE optimizations to SAD (Sums of Absolutes Diferences)
160 (Juan J. Sierralta P. a.k.a. "Juanjo" <juanjo@atmlab.utfsm.cl>).
161- added MMX DCT from mpeg2_movie 1.5 (Juanjo).
162- added new motion estimation algorithms, log and phods (Juanjo).
163- changed directories : libav for format handling, libavcodec for
164 codecs.
165
166version 0.3.4:
167
168- added stereo in mpeg audio encoder.
169
170version 0.3.3:
171
172- added 'high quality' mode which use motion vectors. It can be used in
173 real time at low resolution.
174- fixed rounding problems which caused quality problems at high
175 bitrates and large gop size.
176
177version 0.3.2: small fixes
178
179- asf fixes
180- put_seek bug fix
181
182version 0.3.1: added avi/divx support
183
184- added avi support
185- added mpeg4 codec compatible with open divx. It is based on the h263
186 codec.
187- added sound for flash format (not tested)
188
189version 0.3: initial public release