Tell me more ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.
up vote 0 down vote favorite
1

how do I use ffmbc to decrease the input video volume by 5dB?

FFmpeg has option 'volume' that accepts values like '2' for multiplying by 2 and '-12dB' for volume decrease by 12dB.

In FFmbc I tried option 'vol' but it seems to take only the number into consideration. I read somewhere that '256' is the default value for the output audio be the same level as the input. '512' doubles the audio level. But '-12dB' gets you a very silent video, like setting the option just to '12'.

Any help?

share|improve this question
I can't even find a reference for vol in ffmbc. Where did you get that from? – slhck♦ May 21 '12 at 18:43

Know someone who can answer? Share a link to this question via email, Google+, Twitter, or Facebook.

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.