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VDOWNMIX PLUGIN
===============
The vdownmix plugin is a downmixer from 4-6 channels to 2-channel
stereo headphone output. This plugin processes the input signals with
a simple spacialization, so the output sounds like a kind of "virtual
surround".
For example, define the below:
pcm.!surround51 {
type vdownmix
slave.pcm "default"
}
pcm.!surround40 {
type vdownmix
slave.pcm "default"
}
and the outputs from video player to these PCMs are converted to the
default 2.0 output with a proper downmix.
The accepted format is currently only S16.
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