(10-13-2023, 04:31 PM)Tim Curtis Wrote: Testing Pi-4 HDMI to my AVR and the channel decode is correct. There is sound from L/C/R and Sub but no sound from SL/SR (surrounds).
Weird, but maybe the streams geometry changes from time to time, or the up-mixing is just with empty additional channels... after all they are just unofficial test streams...
Cool that HDMI pass-through works! :-)
I think I sent you, some time ago, a multichannel FLAC for test purposes; you can try that too (it's supposed to be a real 5.1)
I can always share it again, if you like.