[opus] Opus Todo
Timothy B. Terriberry
tterribe at xiph.org
Tue Aug 27 20:36:20 UTC 2019
> So part of the wiki is out of date? Beside Opus-tools, I also concern
> about the spec, optimization and future work in wiki. Could you tell me
> about if they are out of date?
> On 08/28/2019 00:08, Ralph Giles <mailto:giles at thaumas.net> wrote:
For the Spec section:
There is a Matroska mapping, and it has been implemented in Firefox and
FFmpeg (and Chrome and others). There is an ongoing effort to formally
standardize Matroska in the CELLAR working group at the IETF. I am not
certain that much attention has been paid to Opus specifically during
that process, so contributions there might be welcome. See the working
group's status page  and mailing list  for more information.
There is still no multichannel RTP mapping for Opus. At the last IETF
meeting in Montreal there seemed to be some interest in an effort to
finally make one, but I'm not aware of anyone who has started working on
or published a draft yet.
The MP4 mapping is currently maintained by the original author at .
There has been some discussion of more formal publication through
DASH-IF or similar, but I don't think that has gone anywhere yet. This
has also been implemented in a number of places (Firefox, Chrome,
L-SMASH, GPAC, FFmpeg, etc.). A notable gap here is for someone to look
at the changes (if any) needed for Ambisonics support .
I will leave Jean-Marc to comment on the Optimization and Future Work
sections. I know at least some of those things have been worked on.
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