Hello developppers and users i have a question about mumble 1.2.4 i've seen
we can use the OPUS codec so 1 found this link http://www.opus-codec.org/
and i'am confused,
it's say :
But in mumble client 1.2.4-rc1-9-gdeeeb72
bit-rates can only be from 8 to 97kb/s
And frame sizes from 10ms to 60ms
i know this is not the final version but i've search all the day for
testing this codec with mumble but i just wondering if it is just a mistake
or it is normal to always have this number.
(sorry for my english)
Mumble doesn't use the full range of what Opus could theoretically provide. Frame sizes below 10ms produce inapropriate overhead in encoding and transmission and your run-of-the-mill audio device isn't able to deliver them either so we don't use them. The bitrates are limited by what we consider sensible and what our protocol can support without too much changes. 97kbit/s for a mono audio stream is quite a lot. Stereo Mumble doesn't support (yet). We also only use CBR because of security and jitter considerations.
When adopting a codec for a specialized application you generally won't use all of its features and operating modes but select ranges/points that fit your application.
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