[FFmpeg-user] continues/periodic volume detection

Nicolas George nicolas.george at normalesup.org
Fri Dec 21 13:09:22 CET 2012

Le primidi 1er nivôse, an CCXXI, Albert Scholtalbers a écrit :
> I found an excellent filter named: volumedetect to check the audio levels
> of a file.

Thanks, but excellent is certainly an exaggeration.

> Is it possible with this filter to create something like a periodic
> snapshot option to write the values for audio level to a file so on a
> periodic basis.
> If you would take an stream as input you could check if audio is still
> available/or create a kind of VU meter. Very handy if you have to detect
> audio levels on several recording systems.

Try -af ebur128.


  Nicolas George

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