[ryanmcbride]

I still use an iPod with Rockbox firmware as my everyday music player so I also still need mp3s :3

[chronogram]

All iPods supported AAC and I imagine alternative firmware adds opus support, so you can just grab the original audio files from YouTube instead of converting them to MP3.

[ZoomZoomZoom]

RockBox added OPUS support ages ago. Absolutely no need to perform lossy-to-lossy conversion when you can just grab and use the opus stream.

[qwerty456127]

I installed Rockbox on iPod specifically to play Opus.