The VideoLAN Forums

Hi guys,

I'm trying to figure out the default behavior for when the audio track being decoded has less channels than the output device. So say I'm decoding a stereo track to a 5.1 output system, will it only send audio to front left and front right? Where can I see how those mappings work? Couldn't find anywhere.

Thanks!

It depends on the audio output plugin, I think. Sending to the first two channels only is a possibility.

I'm actually developing with MobileVLCKit. I'm forcing fmt->i_physical_channels to 5.1 so I can grab the data from all channels for a multichannel level meter. The behavior I want is for it to only map front left and front right, leaving all other channels muted.

That should work, though there are no warranties that it will continue to be so in the future. You should leave the channels map to stereo if you want stereo.

Cool. Thank you.