[FFmpeg-user] ffplay vol control possible?

Stefano Sabatini stefano.sabatini-lala at poste.it
Wed Sep 7 11:31:11 CEST 2011

On date Tuesday 2011-09-06 17:10:00 -0600, Roger Pack encoded:
> It seems from the scattered documentation on the web that
> ffplay -vol 1 g:\yo.mp3
> should work.
> However, it doesn't:
> Unrecognized option 'vol'
> c:\dev\ruby\sensible-cinema\vendor\cache\ffmpeg\ffplay.exe: failed to
> set value '1' for option 'vol'

That's correct, ffplay *never* supported a -vol option, maybe you're
confusing with the ffmpeg option.
> Bug report worthy? Or is there another way out there?

Wait for audio filtering, but yes you're welcome to file a feature
ffmpeg-user random tip #3
Some few multimedia formats (mpeg-1, mpeg-2:PS, DV) support physical merge 
consistency, which means you can merge two files with cat. E.g.:
cat input1.mpeg input2.mpeg > output.mpeg
See: http://www.ffmpeg.org/faq.html#SEC25

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