Using Opus codec for GCompris voice files

[Karl Ove Hufthammer]

Hi,

I’m currently working on adding voice files for Norwegian Nynorsk to 
GCompris. The documentation 
(https://invent.kde.org/education/gcompris-data/-/blob/master/voices/HOWTO_ENCODE) 
says to encode them using Ogg Vorbis. But I’m wondering if it’s possible 
to use the Opus codec instead?

Opus is the successor to Vorbis, developed by the same guy, and uses 
lower bitrate for the same quality. See 
https://opus-codec.org/comparison/ for a comparison. For my voice files, 
I can approximately *halve* the file size (compared to Vorbis, ‘oggenc 
-q0 --downmix’) with ~no perceptible loss in quality (compared to the 
*original* .wav file, and of course also to the Vorbis file).


-- 
Karl Ove Hufthammer