examples of trivial_channel_mixer?

[mattpease]

Hello -

I am trying to transcode a stream and publish to my icecast server. No problems there.

However, I'd like to sample just the left channel while i'm doing this. I noticed the Audio -> Audio Channel -> Left option in the UI uses trivial_channel_mixer. Can I use this from the command line? (or config file)?

Any examples of using trivial_channel_mixer?

Thank you-
Matt