What is the best format settings to store a physical music?
I did look at Flac but the data is almost the same size as the uncompressed Wav and none of my devices or self hosted services seem designed to play flac files. Everything gets converted.
What are people using?
Opus is an insanely efficient codec, but unfortunately not very compatible.
Not Compatible with what exactly? It works on my 20 year old ipod using rockbox, any modern players should support it.
Tons of legacy devices. Old car infotainment systems, old “smart” TVs, old players that don’t have Rockbox ports, etc.
Rockbox is a bad benchmark due to its insane versatility. Just because modern players “should” support something doesn’t mean the manufacturer put the work in to do so, or even do it well.
That said, when I buy a portable music player the decision is always based on whether or not there’s a Rockbox port for it.