On 7/31/15, qw <[email protected]> wrote: > Hi, > > > My question is: > > > 1) > how to create one mp4 clip via ffmpeg, in which video is black and audio is > silent?
ffmpeg.exe -f lavfi -i color=s=hd720:d=5 -f lavfi -i anullsrc -strict -2 -shortest out.mp4 > > > 2) > How to merge multiple mp4 files into one mp4 file without video/audio > encoding or decoding? See ffmpeg's concat demuxer documentation. > > Thanks! > > > B.R. > > > Andrew > > _______________________________________________ > ffmpeg-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
