e4110d5d44d0f584304a8a65dc76398836a72703
[libav.git] / Changelog
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4 FFmpeg Changelog
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8 <h1> FFmpeg Changelog </h1>
9 <PRE>
10 Upcoming version 0.4.7:
11
12 - 4X multimedia playback system including 4xm file demuxer (Mike
13 Melanson), and 4X video and audio codecs (Michael)
14 - Creative YUV (CYUV) decoder (Mike Melanson)
15 - FFV1 codec (our very simple lossless intra only codec, compresses much better
16 then huffyuv) (Michael)
17 - ASV1 (Asus), H.264, Intel indeo3 codecs has been added (Various)
18 - Tiny PNG encoder and decoder, tiny GIF decoder, PAM decoder (PPM with
19 alpha support), JPEG YUV colorspace support. (Fabrice Bellard)
20 - ffplay has been replaced with a newer version which uses SDL (optionally)
21 for multi platform support (fabrice)
22 - Sorenson Version 3 codec (SVQ3) support has been added (decoding only) - donated
23 by anonymous
24 - AMR format has been added (Johannes Carlsson)
25 - 3gp support has been added (Johannes Carlsson, improved by Johannes Carlson)
26 - VP3 codec has been added (Mike Melanson)
27 - more MPEG-1/2 fixes
28 - Better Multi platform support, MS Visual Studio fixes (various)
29 - Altivec optimizations (Magnus Damn and others)
30 - SH4 processor support has been added (BERO)
31 - New public interfaces (avcodec_get_pix_fmt) (Roman Shaposhnick)
32 - VOB Streaming support (Brian Foley)
33 - Better MP3 Autodetection (Andriy Rysin)
34 - qpel encoding (Michael)
35 - 4mv+b frames encoding finally fixed (Michael)
36 - chroma ME (Michael)
37 - 5 comparission functions for ME (Michael)
38 - b frame encoding speedup (Michael)
39 - wmv2 codec (unfinished - Michael)
40 - user specified diamond size for EPZS (Michael)
41
42 .. And lots more new enhances and fixes.
43
44 version 0.4.6:
45
46 - completely new integer only mpeg audio layer 1/2/3 decoder rewritten
47 from scratch.
48 - recoded dct and motion vector search with gcc (no longer depends on
49 nasm).
50 - fix quantization bug in AC3 encoder.
51 - added PCM codecs and format. Corrected wav/avi/asf pcm issues.
52 - added prototype ffplay program.
53 - added GOB header parsing on H.263/H.263+ decoder. (Juanjo)
54 - bug fix on MCBPC tables of H.263. (Juanjo)
55 - bug fix on DC coefficients of H.263. (Juanjo)
56 - added Advanced Prediction Mode on H.263/H.263+ decoder. (Juanjo)
57 - now we can decode H.263 streams found on QuickTime files. (Juanjo)
58 - now we can decode H.263 streams found on VIVO v1 files.(Juanjo)
59 - preliminary RTP "friendly" mode for H.263/H.263+ coding. (Juanjo)
60 - added GOB header for H.263/H.263+ coding on RTP mode. (Juanjo)
61 - now H.263 picture size is returned on the first decoded frame. (Juanjo)
62 - added first regression tests
63 - added MPEG2 TS demux
64 - new demux API for libav
65 - more accurate and faster IDCT (Michael)
66 - faster and entropy controlled motion search (Michael)
67 - two pass video encoding (Michael)
68 - new video rate control (Michael)
69 - added MSMPEG4V1, MSMPEGV2 and WMV1 support (Michael)
70 - great performance improvement of video encoders and decoders (Michael)
71 - new and faster bit readers and vlc parsers (Michael)
72 - high quality encoding mode : tries all macroblock/VLC types (Michael)
73 - added DV video decoder
74 - preliminary RTP/RTSP support in ffserver and libavformat
75 - H.263+ AIC decoding/encoding support. (Juanjo)
76 - VCD MPEG-PS mode. (Juanjo)
77 - PSNR stuff. (Juanjo)
78 - Simple stats output. (Juanjo)
79 - 16-bit and 15-bit rgb/bgr/gbr support (Bisqwit)
80
81 version 0.4.5:
82
83 - some header fixes (Zdenek Kabelac &lt;kabi@informatics.muni.cz&gt;).
84 - many MMX optimizations (Nick Kurshev &lt;nickols_k@mail.ru&gt;).
85 - added configure system (actually a small shell script).
86 - added mpeg audio layer 1/2/3 decoding using LGPL'ed mpglib by
87 Michael Hipp (temporary solution - waiting for integer only
88 decoder).
89 - fixed VIDIOCSYNC interrupt.
90 - added Intel H263 decoding support ('I263' avi fourCC)
91 - added Real Video 1.0 decoding (needs further testing).
92 - simplified image formats again. Added PGM format (=grey
93 pgm). Renamed old PGM to PGMYUV.
94 - fixed msmpeg4 slice issues (tell me if you still find problems).
95 - fixed opendivx bugs with newer versions (added VOL header decoding).
96 - added support for mplayer interface.
97 - added macroblock skip optimization.
98 - added MJPEG decoder.
99 - added mmx/mmxext idct from libmpeg2.
100 - added pgmyuvpipe, ppm, and ppm_pipe formats (original patch by Celer
101 &lt;celer@shell.scrypt.net&gt;).
102 - added pixel format convertion layer (e.g. for MJPEG or PPM).
103 - added deinterlacing option.
104 - mpeg1/2 fixes.
105 - mpeg4 vol header fixes (Jonathan Marsden &lt;snmjbm@pacbell.net&gt;).
106 - ARM optimizations (Lionel Ulmer &lt;lionel.ulmer@free.fr&gt;).
107 - Windows porting of file converter.
108 - added MJPEG raw format (input/ouput).
109 - added JPEG image format support (input/output).
110
111 version 0.4.4:
112
113 - fixed some std header definitions (Bjorn Lindgren
114 &lt;bjorn.e.lindgren@telia.com&gt;).
115 - added mpeg demux (mpeg 1 and 2 compatible).
116 - added ASF demux.
117 - added prototype RM demux.
118 - added AC3 decoding (done with libac3 by Aaron Holtzman).
119 - added decoding codec parameter guessing (.e.g. for mpeg, because the
120 header does not include them).
121 - fixed header generation in mpeg1, AVI and ASF mux : wmplayer can now
122 play them (only tested video).
123 - fixed h263 white bug.
124 - fixed phase rounding in img resample filter.
125 - add mmx code for polyphase img resample filter.
126 - added CPU autodetect.
127 - added generic title/author/copyright/comment string handling (ASF and RM use them).
128 - added SWF demux to extract MP3 track (not usable yet because no MP3
129 decoder).
130 - added fractional frame rate support.
131 - codecs are no longer searched by read_header() (should fix ffserver
132 segfault).
133
134 version 0.4.3:
135
136 - BGR24 patch (initial patch by Jeroen Vreeken &lt;pe1rxq@amsat.org&gt;).
137 - fixed raw yuv output.
138 - added motion rounding support in MPEG4.
139 - fixed motion bug rounding in MSMPEG4.
140 - added B frame handling in video core.
141 - added full MPEG1 decoding support.
142 - added partial (frame only) MPEG2 support.
143 - changed the FOURCC code for H.263 to "U263" to be able to see the
144 +AVI/H.263 file with the UB Video H.263+ decoder. MPlayer works with
145 this +codec ;) (JuanJo).
146 - Halfpel motion estimation after mb type selection (JuanJo).
147 - added pgm and .Y.U.V output format.
148 - suppressed 'img:' protocol. Simply use: /tmp/test%d.[pgm|Y] as input or
149 output.
150 - added pgmpipe I/O format (original patch from Martin Aumueller
151 &lt;lists@reserv.at&gt;, but changed completely since we use a format
152 instead of a protocol).
153
154 version 0.4.2:
155
156 - added H263/MPEG4/MSMPEG4 decoding support. MPEG4 decoding support
157 (for openDIVX) is almost complete: 8x8 MVs and rounding are
158 missing. MSMPEG4 support is complete.
159 - added prototype MPEG1 decoder. Only I and P frames handled yet (it
160 can decode ffmpeg mpegs :-)).
161 - added libavcodec API documentation (see apiexample.c).
162 - fixed image polyphase bug (the bottom of some images could be
163 greenish).
164 - added support for non clipped motion vectors (decoding only)
165 and image sizes non multiple of 16.
166 - added support for AC prediction (decoding only).
167 - added file overwrite confirmation (can be disabled with -y).
168 - Added custom size picture to H.263 using H.263+ (Juanjo).
169
170 version 0.4.1:
171
172 - added MSMPEG4 (aka DIVX) compatible encoder. Changed default codec
173 of avi and asf to DIV3.
174 - added -me option to set motion estimation method
175 (default=log). suppressed redundant -hq option.
176 - added options -acodec and -vcodec to force a given codec (useful for
177 AVI for example).
178 - fixed -an option.
179 - improved dct_quantize speed.
180 - factorized some motion estimation code.
181
182 version 0.4.0:
183
184 - removing grab code from ffserver and moved it to ffmpeg. Added multi
185 stream support to ffmpeg.
186 - added timeshifting support for live feeds (option ?date=xxx in the
187 URL).
188 - added high quality image resize code with polyphase filter (need
189 mmx/see optimisation). Enable multiple image size support in ffserver.
190 - added multi live feed support in ffserver.
191 - suppressed master feature from ffserver (it should be done with an
192 external program which opens the .ffm url and writes it to another
193 ffserver).
194 - added preliminary support for video stream parsing (wav and avi half
195 done). Added proper support for audio/video file convertion in
196 ffmpeg.
197 - added preliminary support for video file sending from ffserver.
198 - redesigning I/O subsystem : now using URL based input and output
199 (see avio.h).
200 - added wav format support.
201 - added "tty user interface" to ffmpeg to stop grabbing gracefully.
202 - added MMX/SSE optimizations to SAD (Sums of Absolutes Diferences)
203 (Juan J. Sierralta P. a.k.a. "Juanjo" &lt;juanjo@atmlab.utfsm.cl&gt;).
204 - added MMX DCT from mpeg2_movie 1.5 (Juanjo).
205 - added new motion estimation algorithms, log and phods (Juanjo).
206 - changed directories : libav for format handling, libavcodec for
207 codecs.
208
209 version 0.3.4:
210
211 - added stereo in mpeg audio encoder.
212
213 version 0.3.3:
214
215 - added 'high quality' mode which use motion vectors. It can be used in
216 real time at low resolution.
217 - fixed rounding problems which caused quality problems at high
218 bitrates and large gop size.
219
220 version 0.3.2: small fixes
221
222 - asf fixes
223 - put_seek bug fix
224
225 version 0.3.1: added avi/divx support
226
227 - added avi support
228 - added mpeg4 codec compatible with open divx. It is based on the h263
229 codec.
230 - added sound for flash format (not tested)
231
232 version 0.3: initial public release
233 </PRE>
234 <hr>Copyright (c) 2001, 2002 Fabrice Bellard <hr>Fabrice Bellard - <em> fabrice.bellard at free.fr </em> - <A HREF="http://bellard.org/"> http://bellard.org/ </A> - <A HREF="http://www.ffmpeg.org/"> http://www.ffmpeg.org/ </A>
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