The core media type for OPUS has been updated to `audio/ogg; codecs=opus`. The old `audio/ogg` we had was for RTP. Epubcheck will need to be updated to allow the same in the package document. See https://github.com/w3c/epub-specs/issues/2516
The core media type for OPUS has been updated to
audio/ogg; codecs=opus. The oldaudio/oggwe had was for RTP.Epubcheck will need to be updated to allow the same in the package document.
See w3c/epub-specs#2516