[MPlayer-users] Pan downmixing + LFE Problem
tbhimdi at bhimdi.com
Mon Apr 26 20:36:32 CEST 2004
Hi all, I just joined this list after hours of going through the
archives trying to find a solution to my problem (no solution was
found), so hopefully somebody can help me out here.
I installed linux a couple weeks ago, so I'm relatively new at using it,
just switched to MPlayer a couple days ago after using Xine (I installed
mplayer initially but thought it was CLI only so uninstalled it, mistake
since I'm liking mplayer more than xine now).
Anyways, here is my problem...
I've got an audigy installed in my computer which is hooked up to my 4.1
speakers (Klipsch Promedias 4.1), all running Fedora with latest ALSA
drivers with MPlayer version 1.0-0.9.20040415.1.fc What I'm trying to
do is set up mplayer to downmix 5.1 channel audio into 4 channel audio
so that I can watch 5.1 movies nicely (using the speakers test avi from
http://www.tfm.ro for testing, it's quite nice).
The problem is that mplayer doesn't want to mix in the .1 (LFE) channel
into my two front speakers, but it does mix in the center channel just
fine. The same avi and same system work great in windows, I can hear
all 5.1 channels through my 4+1 speaker system (well hear/feel the .1).
Here is my config file if it will help:
vo = xv
ao = alsa1x
double = yes
bandwidth = 4000000
stop-xscreensaver = yes
I even changed 2 lines above to these to see if it would help:
Trying to simulate a 5.1 setup, but mixing the center+lfe channels into
the other channels and outputting nothing in the center/lfe channels.
Even this wouldn't output the LFE, but it would output everything to
every channel just fine:
It doesn't help, all configs work great with FL,FR,RL,RR,C, but no LFE
at all, not even with the alsamixer settings all set to max and speaker
volume up high.
So here my questions:
1) Any fix to mix the LFE into the FL and FR channels? (like WinDVD in
2) Does mplayer even decode the LFE channel?
3) Does mplayer downmix the LFE channel or just truncate it?
4) This a (un)known bug?
5) Is my first config correct?
I really don't want to boot into windows just to watch a 5.1 movie, I
hope somebody can help.
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