2013-01-25, 13:13
(2013-01-25, 01:11)Glorious1 Wrote: There may be a problem with OS X or XBMC that makes audio work for some and not others, but it seems the first thing to check would be all the settings. Given that there are so many settings that affect audio, it seems to me people have been pretty sketchy about what their settings are.
Surround sound audio (AC3 and DTS) is working for me on a Mac mini with OS X 10.8.2 (Mountain Lion), and XBMC 12 (Frodo RC3), with audio going out optically. The receiver's DTS icon lights up (for DTS) and I hear surround sound. Maybe some people for whom it is not working would like to report their settings the same way, or try these settings, and maybe a pattern will emerge.
XBMC, Settings > System > Audio Output
Audio Output - Optical/Coax
Speaker Configuration - 5.1
Boost volume level on downmix - Off
Output stereo to all speakers - Off
Dolby Digital (AC3) capable receiver - On
DTS capable receiver - On
Audio output device - Built-in Output
OS X, System Preferences > Sound > Output
Digital Out - Optical digital-out port
Audio Midi Setup > Built-in Output > Output
Source - Digital Out (not actually a setting, just info in the window)
Format - 44100.0 Hz 2ch-24bit Integer
I don't profess to understand the settings and don't know which are important; I more or less come to them by trial and error. Maybe it will help someone.
Another thought, I don't know if a bad optical cable is a possibility?
I Can confirm this too, using the exact same settings like above.
I even cannot select more then 2 speakers in the Audio Midi setup, I don't know if this is a ML 10.8.2 bug or something I'm not seeing here.
Strangely Dolby Digital 5.1 and DTS are working, but sometimes I got the idea that its not function properly, when I'm watching a moviescene with only people talking and after that some special effects or music, the volume difference are big. I don't know if this something depending on the audiomixer of the moviecreators or a wrong config in XBMC or ML.