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Re: Ideas why dvd playback is jerky?

On Thu, Jun 07, 2007 at 11:34:21PM -0700, Kenward Vaughan wrote:
> I've tried mplayer, codeine, ogle, totem, and vlc.  Totem ca't read the
> disc.

xine perhaps?  Although mplayer tends to work too.

> I disabled everything else including xscreensaver, and shutdown folding
> @home as well.  Essentially no processes outside that of the system and
> X, excepting evolution.  I run fluxbox for WM.
> I have 2 Gb Mushkin memory.  
> ** One thing that comes to mind is that I have no patch audio wires from
> the player to the MB at this point.  Could this make a big difference in
> what the player has to do to get things to work?

That only applies to audio CDs.

> I saw a fair amount of output from codeine about dropped frames (being
> too old) as well as other issues.  I can post some of that in a separate
> email.

Any chance DMA isn't enabled for the DVD drive?  That would cuase a ton
of extra cpu work reading the drive and make it read much slower too.

cat /proc/ide/hda/settings |grep -i dma

Replace hda with whatever the DVD drive is.

I have this:
using_dma               1               0               1 rw

The first value is current, followed by min and max.  1 means using dma,
0 means not using dma.  Usually if you don't have DMA, you have the
wrong ide driver loaded for your IDE chipset.  Usually the debian
kernels are quite good at detecting and loading the right drivers from
the initrd, but sometimes it needs help.

My Athlon 700 with a 6600GT has no problem playing DVDs.

Len Sorensen

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