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