fre 2018-07-27 klockan 19:54 +0530 skrev Gyan Doshi: > > On 27-07-2018 07:36 PM, Tomas Härdin wrote: > > > This is something the PeerTube guys need, and this seemed a > > straightforward enough approach. Feedback appreciated > > Not a patch review, just a note that one can do this with > ffmpeg/ffprobe > and basic *nix tools. > > To check for moof, > > ffmpeg -i in.mp4 -v 56 2>&1 | grep -e type:'moof' > > To see if moov precedes mdat > > ffmpeg -i in.mp4 -v 56 2>&1 | grep -e "type:'moov'" -e > "type:'mdat'" | head -1 | grep moov
woot! I didn't know the mov demuxer dumped such things. It is quite slow however, since it will scan through every leaf atom in the file. For example, running time ffmpeg -i input.mov -v 56 2>&1 | wc on a 1.5 GiB MP4 on an SSD takes: real 0m4,740s user 0m6,708s sys 0m2,356s While using the patched qt-faststart: real 0m0,002s user 0m0,000s sys 0m0,000s /Tomas _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
