Would Proton Bridge fit your needs?

Oh dang, you’re right. I used to use StaxRip back when I was doing more encoding and then finish with MKVToolNix, but I think the gui is Windows only.

Probably should have recommended Handbrake.

AAC is higher quality for the same compression level and generally preferred by Apple. MP3 should be fine too though.

EDIT: To be clear though, the programs I listed can handle all kinds of codecs including AAC and MP3. fre:ac is also good for ripping CDs if you’re into that sort of thing.

I’ll have to check it out. If you want to listen to Audiobooks specifically, I will say that the Open Source app BookPlayer has been fantastic for me.

If you really need to convert the files to something like AAC for native iPhone playback, I would suggest either fre:ac (audio only) or MKVToolnix (video and audio).

Installing VLC on your iPhone is probably the easiest solution. It should play the Opus files without any transcoding needed.

If only Coreboot supported more devices…

Some types of grasses can be deadly to animals such as dogs. I’m looking you foxtails. I’m all about replacing lawns where it makes sense, but often neglect leads to burdening others.