it would be great to be clearer about encoding format. currently "ogg" seems to encode using theora. and opus is missing, but can be added. it would be nice to have opusenc included in the config out of the box.
This project is unfortunately no longer maintained. If a new maintainer wants to step up and take care, the project is archived here: https://invent.kde.org/unmaintained/kaudiocreator You can just clone it in your private namespace on invent.kde.org and if you have started to work on it and fixed/implemented something get it reviewed and the project unarchived. Sorry for the inconveniences.