[mythtv-users] tweaking video and disappearing audio settings

David Wadler david at davidwadler.com
Fri May 14 17:16:47 EDT 2004


I fixed my audio nastiness.  For those of you who are having problems and have a BT878 card, make sure you select the audio mixer module when building your kernel.  I didn't, thinking that audio merely passed through my TV-card and that it didn't do anything.  What I think happened is -- absent the mixer module -- all the volume settings are maxed out resulting in distortion and clipping.  Once I built the module and loaded it, audio became clear.

Now the questions:
1)  I set my mixer settings using the alsamixer (and also from the command line), but they don't seem to stay intact.  I've done an alsactl store, but upon reboot, they're gone again.  Currently, I have a bash script that I run manually that re-sets everything the way I like it.  I put this in ~/.kde/Autostart, but it doesn't run automatically.  I'm thinking about calling it from another .script, but if anyone has an elegant solution, I'm all ears.

2)  My video is okay, but not great.  I have a mediocre analog cable signal to begin with, so consequent degradation takes its toll on picture quality.  The lighter colors appear washed out and there is some artifacting with hi-speed motion.  I scanned the archives and saw that people have had good success with nvtv.  I'm running an nVidia 4400 MX, so I thought I'd give it a crack.  Unfortunately, it segfaults.  I'm running Gentoo and I've emerged it and built it from sourceforge source with the same result.  I've seen some posts about tweaking video quality with xvcontrols, but can't seem to find them.  Any idea on how to access them or any other suggestions?

Thanks,
David
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