generic-library/ffmpeg
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430 Commits

Author SHA1 Message Date
Michael Niedermayer
11ce88346b mpeg4 aspect_ratio_info in AVCodecContext (requested by alex) 
experimental (& faster) motion estimation
squished a dirty uninitialized var bug
mpeg1 fcode>1 support

Originally committed as revision 349 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2002-03-22 23:22:08 +00:00
Michael Niedermayer
45870f5718 new motion estimation (epzs) not complete yet but allready pretty good :) 
unlimited mv search range
minor bugfix in the mpeg4 header parser
reset picture in gop counter if scene change is detected

Originally committed as revision 344 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2002-03-22 02:21:17 +00:00
Michael Niedermayer
9cdd6a24ad hopefully better bitrate controll 
Originally committed as revision 334 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2002-03-17 16:31:38 +00:00
Michael Niedermayer
4278e7a6f5 optimization 
Originally committed as revision 332 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2002-03-15 14:57:17 +00:00
Michael Niedermayer
d6231b9e70 use ac prediction in mpeg4 encoding (5% smaller intra-blocks/keyframes) 
some minor optimizations
last non zero index cant be 64 bugfix

Originally committed as revision 331 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2002-03-15 04:10:53 +00:00
Michael Niedermayer
6f91bcd151 mpeg4 b-frames :) 
create slightly more correct headers & add "ffmpeg" user-data section

Originally committed as revision 328 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2002-03-12 22:54:25 +00:00
Michael Niedermayer
44eb495128 divx5-gmc support 
q-pel mc support
neither is totally bugfree yet though :(

Originally committed as revision 320 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2002-03-09 13:01:16 +00:00
Michael Niedermayer
73c8e5144a gmc bitstream decoding support (the real motion compensation isnt implemnted yet) 
Originally committed as revision 318 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2002-03-07 13:27:15 +00:00
Michael Niedermayer
cc9ba006ec parsing more of the mpeg4 header & print some "not supported" stuff 
Originally committed as revision 317 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2002-03-05 13:58:13 +00:00
Juanjo
d140623fc4 - H.263+ decoder support for Advanded INTRA Coding (buggy) 
Originally committed as revision 310 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2002-02-18 19:33:27 +00:00
Zdenek Kabelac
3232bc885d * using static instead of extern 
Originally committed as revision 304 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2002-02-18 09:29:32 +00:00
Juanjo
b4dbd87c04 - Minor changes on bitrate control 
Originally committed as revision 300 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2002-02-15 20:46:37 +00:00
Juanjo
e03c341ef3 - More work on preliminary bit rate control, just to be able to get an 
average variance for picture's MBs so we can adjust qscale on the MB layer.

Originally committed as revision 294 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2002-02-10 06:10:50 +00:00
Juanjo
37fbfd0a91 - Now the ME is done for the entire picture when enconding, the 
DCT/Quantization is done after we have calculated all the MV of the picture.
- This is the preamble for a better bit rate control.

Originally committed as revision 293 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2002-02-10 01:56:50 +00:00
Juanjo
81401c1fbc - Fixes on RTP and GOB headers for H.263. 
- RTP callback system implemented for H.263/H.263+.
- Bug fix on DC coefficients of H.263.
- H.263 decoder now returns PTS on picture number.

Originally committed as revision 292 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2002-02-09 16:59:56 +00:00
Arpi
80e103d04c PATCH by Rik Snel <rsnel@cube.dyndns.org> 
this patch enhances the jpeg header writer. It can be asked to omit
quantisation and huffman tables and it can write different horizontal and
vertical sampling factors. (the last thing is useless for libavcodec
itself (because libavcodec only handles YUV420P at ecoder level), but the
values are initialized so that operation of libavcodec is not impaired)

Originally committed as revision 290 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2002-02-09 01:23:41 +00:00
Michael Niedermayer
2f349de286 (commit by michael) 
mmx & mmx2 quantizer
c dct permutation bugfix
dont copy input on intra only encodings if it can be avoided
dont draw edges on intra only stuff

Originally committed as revision 281 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2002-01-27 13:30:18 +00:00
Michael Niedermayer
ae40484c1c (commit by michael) 
bye bye weird al rounding bug ;)

Originally committed as revision 268 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2002-01-15 22:22:41 +00:00
Michael Niedermayer
bff6ecaa9c AC table reset (memset) optimization - patch by Michael Niedermayer <michaelni@gmx.at> 
Originally committed as revision 251 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2002-01-10 00:53:21 +00:00
Juanjo
644d98a4f2 - Preliminary RTP friendly mode for H.263. 
- GOB headers for H.263 coding on RTP mode.
- Improved GOB header detection for H.263 decoder.

Originally committed as revision 222 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2001-11-19 02:13:14 +00:00
Juanjo
102d39088b - Fixed a bug on H.263 MV prediction for MB on GOBs limits. 
- Now we can decode H.263v1 streams found on QT without problems.

Originally committed as revision 214 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2001-11-12 05:19:55 +00:00
Nick Kurshev
a822a47983 fixed gcc-3.0.x compilation (by Michael Niedermayer) 
Originally committed as revision 211 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2001-11-10 14:36:12 +00:00
Juanjo
544286b3d3 Moved some H.263+ variables to MpegEncContext to be thread-safe. 
Increase video_buffer on ffmpeg to avoid buffer overrun on big pictures.


Originally committed as revision 114 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2001-08-31 06:21:27 +00:00
Fabrice Bellard
58f26ba916 changed opendivx to mpeg4 
Originally committed as revision 102 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2001-08-15 13:12:23 +00:00
Fabrice Bellard
1a56543279 win32 fixes 
Originally committed as revision 84 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2001-08-13 21:48:05 +00:00
Fabrice Bellard
3c054a1cdd fixed scan protos 
Originally committed as revision 52 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2001-08-07 22:49:11 +00:00
Arpi
4af7bcc185 MMX/MMXEXT iDCT support, using external functions currently defined in libmpeg2 
Gives average 13-20% mpeg decoding speedup on x86 systems.


Originally committed as revision 30 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2001-08-03 18:33:03 +00:00
Fabrice Bellard
21af69f787 use block[] in structure to have it aligned on 8 bytes for mmx optimizations - dct_unquantize is always a function pointer - added specialized dct_unquantize_h263 
Originally committed as revision 22 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2001-07-30 23:26:26 +00:00
Fabrice Bellard
3bb4e23a8a added skip macroblock optimization (big perf win on black regions for example) 
Originally committed as revision 13 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2001-07-24 20:43:41 +00:00
Fabrice Bellard
de6d9b6404 Initial revision 
Originally committed as revision 5 to svn://svn.ffmpeg.org/ffmpeg/trunk
 2001-07-22 14:18:56 +00:00