[FFmpeg-user] Unable to read from stdin for certain .MOV files

Carl Eugen Hoyos cehoyos at ag.or.at
Thu Nov 8 19:49:30 CET 2012

Jesse Gordon <tojesseg <at> gmail.com> writes:

> > It is not generally possible to read mov files via stdin,
> > because it is perfectly normal that mov files contain
> > necessary information needed for decoding (like codecs
> > etc.) at the very end of the file.
> > (This is not a limitation of FFmpeg, but a feature of the
> > mov file format.)
> Ahh that makes sense. That also explains why I couldn't use 
> dd to cut a .MOV file in half and play the first half!

I should have added that you can of course use 
tools/qt-faststart to circumvent both problems.

Carl Eugen

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