...continued from MediaServer forum...
Xbox 360, up to date with latest code drop, plays DIVX-encoded (.avi container) AC3 5.1 surround sound videos from Twonky 4.4.3.1 (Linkstation Pro) in 2 channel rather than 6 channel stereo sound - confirmed by Panasonic amp.
Surround sound is correctly working on said Xbox 360 in games.
Ideas?
packetvoodoo
No 5.1 AC3 sound on Xbox 360
Something else
I've tested this with several ac3 embedded xvid and divx files and haven't had any problem with 6 channel audio. Are you certain the file was encoded as you say it was?