“Audio 2: 5.1 AAC (source: 1997 DVD)”
AAC isn’t blu ray compliant. Why not AC3 instead?Is that still a concern? I figured most people play MKV as such.
It would be a concern for those who burn this to disc and want 5.1 surround. You say “most” but there are still those who like to burn movies to disc. I suppose there’s minimal quality loss if you convert the AAC to AC3 640kbps. This can be done with ffmpeg or eac3to I believe.
Edit: Actually, couldn’t you convert the AAC to PCM with zero quality loss? PCM of course being BD compliant.
PCM 5.1 is the opposite problem for me, it’s not MKV compliant, so I avoid it. However what I can do is export the raw tracks as PCM mono and then combine them together in Audacity as FLAC 5.1. You could then convert that to PCM 5.1 on your end.