OpenELEC/OpenELEC.tv — Issue #189: TrueHD to PCM: Channels messed up
Author: meilon
Created: 2012-02-12 14:35:49+00:00
State: open

Hi there,

I just came across a video with a TrueHD 7.1 audio stream in it. What I first noticed was that the center was quiet, mouths moved but the center wasn't giving me anything.

I downloaded the Dolby TrueHD Channel Check file from www.demo-world.eu/trailers/high-definition-trailers.php and played it. Front Left and Right are correct, rear left and right are on the front counterparts and the rest is missing. The receiver was set to play in Direct mode and XBMC is set to 5.1 HDMI and to use hdmi (ALSA) for analog and digital output.

Is there something wrong with my config or is it XBMC? I'm currently running OpenELEC-Fusion.i386-devel-20120201182055-r9725

I've done a test with the DTS-HD MA 7.1 Channel Test file and it works correctly there: The sound gets bitstreamed to my receiver and played correctly (rear and surround are the same).

I know that TrueHD can't be bitstreamed right now (but I don't know why, please enlighten me), but at least the channels should be correct.

Regards
meilon

My System:
Zotac AD-10 (4GB RAM, 32GB Patrio Torqx 2 SSD)
Onkyo TX-SR507
Teufel Concept E Magnum 5.1
Samsung LE40B650 (not for long...)