[FFmpeg-devel] Accelarated MPEG2 to MPEG4 transcoding

Vladimir Moushkov vmoushkov
Mon Aug 13 13:45:26 CEST 2007


Hello beloved FFMPEG developers!

Recently I found this paper:

http://166.104.44.162/lecture/dh/08_Fast%20Transcoding%20Algorithm%
20from%20MPEG2%20to%20H264.pdf

Which describes how to get motion vectors from mpeg2 stream and re-use
them when transcoding to mpeg4, as also other information. The time
saved is over 60%.

So my question is currently ffmpeg using any of the mpeg2 information
when transcodign to mpeg4 or it is doing raw encoding?

Thanks!





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