Hello, I am trying to efficiently extract motion vectors from h264 live stream for analysis and motion detection. Is there any way to parse motion vectors without actually decoding the whole frame? I am aware of 'extract_mvs.c' code, but when I was experimenting with it, the performance was pretty much the same as decoding h264 to rawvideo (I think it completely decodes every frame) so right now I see no benefit in performing analysis in compressed domain vs. pixel domain. In theory it should be possible and performance gain could be impressive.
Thank you for your time Best Regards Štěpán Šigut _______________________________________________ Libav-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/libav-user
