DVD Playback Stutter

[kreater]

suse 9 pro, 433mhz, 192 ram, not a beefy system, but when i was running windows my dvds did not stutter but i am trying to figure out how to make my dvds not stutter they all stutter in xine, ogle, and kaffine. is there a way i can disable some unused services to make my linux faster, or a reason why my dvds are stuttering. there not scratched! so why do they stutter can some help? i now its not hardware releated. othere wise it would of been stuttering when i had xp pro in! the dvd rom is a Pioneer DVD +/- RW Drive i just got it, its less then a month old some one please help me lol!

[danimal1009]

What Video Card do you have? Do both sound and video stutter, or is it just the video? I had a problem with the video being real choppy, then I updated the driver for my video card (I have an NVidia one), and it works fine now.

I probably didn't help you at all, but I figured I'd give it a shot...

[JsPr]

Also check if DMA is enabled for your DVD drive if possible. You can use YAST for this.
Just a thought.

[StarKnight83]

My system does the same thing with all 3 of those as well (apple ibook se 466mhz, 576mb ram) and the reason i think that it does this is that the linux dvd playback codecs arent as refined as the proprietary ones (yet). I seem to get my best playback with the latest version of xine (i use the gxine gui) Im hopeing that the official release will fix that prob. its currently at 1.0rc3a So the only thing i can suggest is to 1. make sure you have the latest version and 2. watch for new releases. Hope this helps some.

Joe


P.S. if anyone knows any config tricks to help playback please share them with us. thank you

[sploo22]

Or if you have plenty of hard disk space and you own the DVDs, you can rip them to MPEG files and play them like that. That solved the stuttering problem for me (even though the quality isn't as high).

I would imagine that even playing the raw data files off the hard disk would help since hard disk drives are so much faster than optical ones. I haven't tried that, though. :)

[Icarus]

Search the forms for "DVD performance" or "DMA DVD" should do

hdparm -d1 /dev/hdc

Look around for more performance enhancing options

[Hayl]

another thing to consider is unmasking the IRQ of your DVD Player (and/or all disks./discs)

if you do hdparm /dev/hdd (or whatever device your DCD ROM is), you should se a line like this:

unmaskirq = 1 (on)

to se it on use hdparm -u1 /dev/hdd (or whatever your CD ROM device is)

[mdwatts]

Originally posted by JsPr
Also check if DMA is enabled for your DVD drive if possible. You can use YAST for this.
Just a thought.

Yes YaST does have a option for setting DMA on the IDE devices. I've done it myself (SuSE 9.0) for my DVD.

[kreater]

thats all i needed was to turn on the DMA thing can sometell me what it is? cause i turned it on for both dvd burner and my cd-r and and my dvds dont stuttter no more thanx!

[mdwatts]

Originally posted by kreater
can sometell me what it is?

Direct Memory Access

<edit>

http://www.science.unitn.it/~fiorella/guidelinux/tlk/node87.html