I've looked at the RFC but it's not explicit how channels are encoded. Are channels implicitly associated with frames in a VBR Code 3 packet? I can see a stereo flag in the format but it's not clear to me how this would interact with multiple channels either.

  • Some links to the documentation you are referring to might be helpful. Then, how is an opus encoder implemented is off topic here I think..
    – audionuma
    Sep 2, 2022 at 19:04
  • Yeah, I'm not sure if it's on-topic either, It's probably useful info to sound-techs, on the borderline between format file structure and audio encoding/decoding practices. I'll leave it open for now, see what others think. BTW, looks like the channel count is in the header, not sure what else you want to know.
    – n00dles
    Sep 4, 2022 at 15:18


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