I think both work since opus is the codec but ogg is the container, but personally I’d probably go with .opus because it’s more descriptive.
Btw Apple’s ALAC and AAC files are typically stored in an mp4 container but with the m4a extension to mark it as intended to be audio only (although it may have a video track, which usually is used for album art).
since you seem to be knowledgeable about this, i wanna ask: do you think one should use .opus or .ogg as the file extension for OPUS files?
I think both work since opus is the codec but ogg is the container, but personally I’d probably go with .opus because it’s more descriptive.
Btw Apple’s ALAC and AAC files are typically stored in an mp4 container but with the m4a extension to mark it as intended to be audio only (although it may have a video track, which usually is used for album art).