2016-12-11, 13:08
(2016-12-10, 14:15)popcornmix Wrote: Can you output from MAC through HDMI to TV and then through optical to AVR?
It currently sounds like TV isn't forwarding AC3 passthrough, and an unrealated issue is the USB audio device also fails to support passthrough.
Also, back to the Pi, any differece with omxplayer enabled/disabled in video acceleration settings? That uses a different code path for encapsulating the passthrough data.
Also see this and try adding hdmi_audio_config=0x200 to config.txt.
I don't expect it to solve the issue, but it will stop the TV seeing audio as passthrough which could stop it messing it up.
omxplayer/mmal configuration doesn't make any difference.
Also adding hdmi_audio_config=0x200 option didn't work.
Actually DTS (through TV) works well for me, but not AC-3.
Doesn't work on OpenELEC 5.0.8 either.