[FFmpeg-user] can't pipe into into ffmpeg from mp4's
brian.quandt at gmail.com
Sat Mar 1 21:31:25 CET 2014
I'd like to do the following:
This works fine:
ffmpeg -i file.mp4 towhatever.ext
however, this fails
cat file.mp4 | ffmpeg -i - towhatever.ext
I know the reason, ie mp4's (QT's) have their file information at the
end of the file, and therefore ffmpeg fails to determine what to do
when piped input.
However, say I know all the details of the codec and container, can I
specify them on the command line so that the pipe method would work?
Say I created the file myself, and or have ffprobed the file
cat file.mp4 | ffmpeg -f xyz -pix_fmt rgb24 ... -i - towhatever.ext
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