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ffmpeg / libavcodec / mjpeg.c @ bb71e317

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# Date Author Comment
d7e9533a 04/27/2002 12:30 PM Michael Niedermayer

fixed msmpeg4 infinite loop if buggy stream
rewrote quantizer
fixed bias (+10% compression/quality for h263 like codecs)
qscale=1 support
mpeg1 intra frames looks far less blocky
added codec_id field

Originally committed as revision 423 to svn://svn.ffmpeg.org/ffmpeg/trunk

17592475 02/12/2002 03:43 PM Michael Niedermayer

alternative bitstream writer (disabled by default, uncomment #define ALT_BISTREAM_WRITER in common.h if u want to try it)

Originally committed as revision 295 to svn://svn.ffmpeg.org/ffmpeg/trunk

80e103d0 02/09/2002 01:23 AM Arpi

PATCH by Rik Snel <>

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...

d8c2efac 02/07/2002 02:08 AM Michael Niedermayer

width or height %16 != 0 bugfix

Originally committed as revision 287 to svn://svn.ffmpeg.org/ffmpeg/trunk

a74127c0 08/15/2001 10:33 PM Fabrice Bellard

win32 fixes

Originally committed as revision 110 to svn://svn.ffmpeg.org/ffmpeg/trunk

9d02db7a 08/15/2001 01:10 PM Fabrice Bellard

fix got_picture output

Originally committed as revision 99 to svn://svn.ffmpeg.org/ffmpeg/trunk

1a565432 08/13/2001 09:48 PM Fabrice Bellard

win32 fixes

Originally committed as revision 84 to svn://svn.ffmpeg.org/ffmpeg/trunk

991ae7b6 08/11/2001 07:03 PM Fabrice Bellard

added interlaced MJPEG support

Originally committed as revision 70 to svn://svn.ffmpeg.org/ffmpeg/trunk

486171d7 08/08/2001 10:11 PM Fabrice Bellard

return dummy quality to avoid bug in -sameq case - forgot emms in error case

Originally committed as revision 60 to svn://svn.ffmpeg.org/ffmpeg/trunk

186f8ae1 08/08/2001 07:08 PM Fabrice Bellard

added forgotten emms() - fix various segmentation faults when using mjpeg

Originally committed as revision 57 to svn://svn.ffmpeg.org/ffmpeg/trunk

47476fa9 08/07/2001 10:46 PM Fabrice Bellard

fixed mjpeg matrix quant encoding and decoding

Originally committed as revision 48 to svn://svn.ffmpeg.org/ffmpeg/trunk

bbc0d0c1 08/06/2001 02:46 AM Fabrice Bellard

use default huffman tables if none given

Originally committed as revision 40 to svn://svn.ffmpeg.org/ffmpeg/trunk

b182e68a 08/06/2001 01:54 AM Fabrice Bellard

added 422P and 444P support - fixed block parsing error

Originally committed as revision 39 to svn://svn.ffmpeg.org/ffmpeg/trunk

e2388404 08/06/2001 01:04 AM Fabrice Bellard

added correct component id handling

Originally committed as revision 37 to svn://svn.ffmpeg.org/ffmpeg/trunk

10b7b472 08/06/2001 12:44 AM Fabrice Bellard

added MJPEG decoder, renamed mjpegenc.c to mjpeg.c

Originally committed as revision 34 to svn://svn.ffmpeg.org/ffmpeg/trunk