So here's where I possibly display a little ignorance. I thought the spacial audio was all about being able to move your head around while keeping the perceived positional source of the audio fixed. Given that I'll just be sitting on the couch watching a 5.1 movie, I don't need that aspect - my head will always be pointed at the TV. All I need is the actual 5.1 audio to appear like it's coming from my Airpods Max. I thought that reduced capability only required Dolby Digital or Dolby Atmos. According to this website:
https://professionalsupport.dolby.com/s ... uage=en_US
macOS does already support that.
I thought the Airpods Max would/should have supported those subset audio formats already, and if macOS also supports them then VLC would also have the hooks to use them.