[FFmpeg-user] Using ffmpeg to

Carl Eugen Hoyos cehoyos at ag.or.at
Tue Mar 3 14:53:28 CET 2015

Moritz Barsnick <barsnick <at> gmx.net> writes:

> $ ffmpeg -i source.iso -analyzeduration M -probesize N

This will not work.

$ ffmpeg -analyzeduration 2G -probesize 2G -i source.iso
might work.
Note that mplayer -dumpstream should normally be used 
to extract a stream from iso.

> - There may be junk at the beginning which ffmpeg 
> can't interpret. That could be cut away. But we 
> wouldn't know with a (sub-)sample.

analyzeduration and probesize should work around this, 
there is also skip_initial_bytes

Carl Eugen

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