Hi, i'm trying to have an audio track on the background of a composition of
several clips and text slides. I want the audio to fade out when a video is
playing and fade in when the text slides are playing...

That's what i'm trying to achieve, although i can't even get to change
dynamically the volume of an audio clip.

I found a similar question[0] and the solution was to use:

-filter volume level=0=0;100=1;150=1;300=0


But apparently only the first value is being applied. Has the syntax
changed? Am I doing something wrong?

I tried using -filter as well as -attach

Thanks, hope to hear from you

[0]
http://sourceforge.net/p/mlt/mailman/mlt-devel/thread/CAD2HYgoaz7mKyC7X0sb0nXhXYkVkNdj6BzpJNKGk4LL_N1XcWQ%40mail.gmail.com/#msg32669943
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