decklinkaudiosrc pitches an error when extracting 8 channels of audio

Nirbheek Chauhan nirbheek.chauhan at
Sun Mar 27 16:13:36 UTC 2022

On Sat, Mar 26, 2022 at 5:23 AM Patrick Cusack <patrickcusack at> wrote:
> That failed as well. I am using 1.16.2 (which I understand is not compatible with multiopus). I am going to build a Fedora or Debian image and try that using 1.20. Once I get the 8 channels working, is there a way to specify just 6 of the 8 channels into the opusenc? Would that be audio/x-raw,channels=6 ?

If you want to capture 6 channels, you should configure
decklinkaudiosrc to output 6 channels.

If you want to convert 8 channels to 6 channels, you can use elements
like audioconvert or audiomixmatri to do that.


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