[MPlayer-users] DTS audio is shifted to the right

[Nikos Chantziaras]

On 07/31/2010 02:02 AM, Nikos Chantziaras wrote:
> When playing videos that have DTS audio (h264 + DTS inside an mkv), all
> audio appears to always come louder from the right speaker (I'm using a
> stereo 2.1 audio system, not a surround 5.1/7.1).
>
> Playing the same videos in other players (VLC in Linux/Windows or
> MPC/ffdshow in Windows) results in the audio being centered correctly,
> so I don't think it's the video files themselves that are problematic,
> but looks like it's mplayer's DTS-to-stereo conversion that gets it wrong.
>
> I'm on Linux, MPlayer SVN-r31749-4.4.4.

In the manual page, I found this:

   Play a 6-channel AAC file with only two speakers:

   -af pan=2:.32:.32:.39:.06:.06:.39:.17:-.17:-.17:.17:.33:.33

Doing this results in the exact opposite though: the audio comes mostly 
from the left speaker now; still not centered.

If you can't find a file to reproduce, here the first 70MB of a 1GB file 
that triggers the bug:

http://foss.math.aegean.gr/~realnc/dts.mkv