Re: [Mlt-devel] adjust volume for certain part of a clip

[Dan D. <da...@de...>]

On Thu, Jul 31, 2014 at 5:44 AM, Pascal de JESSEY <pj...@gm...> wrote:
> Hello,
>
> I am try to do automatic authoring in command line using Melt.
> so far I have everything I need, except for audio.
> I have a background music and my video+audio track. I want to lower
> the background music track anywhere there is someone speaking in my
> video track (sort of fadeout-fadein in the middle of a track).
>
> Is there some plugin to do that ?

Not automatically, but you can use the volume filter and animate the
"level" property, assuming you are using the latest version. For
property animation see the blog post on the home page: time=value;
time=value; .... Often, time is represented as frame number, but
timecode and clock values are also supported:
http://mltframework.blogspot.com/2012/04/time-properties.html

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+-DRD-+