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tutorial:standalone_mpeg-4_players [2010/04/17 06:36] j.m |
tutorial:standalone_mpeg-4_players [2012/11/11 08:51] (current) |
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===== GMC and Qpel ===== | ===== GMC and Qpel ===== | ||
- | Xvid and libavcodec MPEG-4 can use more complete [[http://en.wikipedia.org/wiki/Global_Motion_Compensation|GMC]] (Global Motion Compensation) and [[http://en.wikipedia.org/wiki/Qpel|Qpel]] (Quarter pixel) models than the DivX codec. | + | Xvid and libavcodec MPEG-4 can use more complete [[http://en.wikipedia.org/wiki/Global_motion_compensation|GMC]] (Global Motion Compensation) and [[http://en.wikipedia.org/wiki/Qpel|Qpel]] (Quarter pixel) models than the DivX codec. |
With those, you are screwed and need to re-encode the video. That means dual-pass encoding to keep the same size. | With those, you are screwed and need to re-encode the video. That means dual-pass encoding to keep the same size. | ||
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export SRC=/tmp/fma2 | export SRC=/tmp/fma2 | ||
export TGT=/tmp/fma3 | export TGT=/tmp/fma3 | ||
- | perl foreach.pl $SRC/*.avi "avidemux2 | + | perl foreach.pl $SRC/*.avi "avidemux2 \ |
- | --force-unpack --load $SRC/%f | + | --force-unpack --load $SRC/%f \ |
- | --audio-map --video-process --video-codec xvid4 | + | --audio-map --video-process --video-codec xvid4 \ |
- | --video-conf follow=1000 --save $ TGT/fixed_%f | + | --video-conf follow=1000 --save $ TGT/fixed_%f \ |
--quit" | --quit" | ||
</code> | </code> |