[opus] Opus-tools for split and merge

[nji9 at arcor.de]

Hello.

I would like to ask if there are any chances for a tool for
splitting an opus-file at a given position,
and save the parts (as opus) without re-encoding
(i.e. no quality loss).
And vice versa:
Merge two given opus file into one (if prerequisites hold).

opussplit opusFile hh:mm:ss,ss ---> opusFileSplit1 opusFileSplit2
opusmerge opusFileA opusFileB ---> opusFileAMerge

For mp3 and aac this is available, but I found no hint about opus.
(Just in the code:
https://www.opus-codec.org/docs/opus_api-1.2/group__opus__repacketizer.html).

It would be quite a help for using the opus format.