[codec] Ambisonics in an Ogg Opus Container

[Michael Graczyk <[e-mail]>]

Hello,

I work at Google on spatial audio, 3D audio for virtual reality. We
recently launched spatial audio in 360 videos on Youtube [1] and are
currently streaming ambisonics [2] to Android devices on supported
platforms. We will launch on more platforms in the near future.

We plan to use the Opus codec in an Ogg stream on Youtube. We believe
that the robust quality and relatively low complexity of Opus makes
the codec well suited for ambisonics and VR in general. In order to
ensure consistency in how spatial audio is stored and streamed with
Opus, we have written a draft specification for encapsulating
ambisonics in an Ogg Opus stream:

https://datatracker.ietf.org/doc/draft-graczyk-codec-ambisonics/

We hope that establishing a standard Ogg Opus ambisonics format will
help organizations work together and interoperate. I look forward to
your thoughts and comments on the draft document.

[1] https://support.google.com/youtube/answer/6395969?hl=en
[2] https://en.wikipedia.org/wiki/Ambisonics

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Thanks,
Michael Graczyk