DVDs will always play somwhat blurry on Kaffeine. It will play o.k. on Mplayer, KMplayer, GXINE and others. Kaffeine is set to "xine" (will crash if set to "mplayer").
I would like to fix the blur problem and use kaffeine for DVDs.

I carefully changed some parameters - no success. Xine parameters are now re-set to defaults. I also renewed the kaffeine folder under $/.kde a few times.

I used video: "xv", "opengl" and anything else it would let me - no help. Now I am back to "auto" (xv, I guess).

Fast movements are blurry, when I pause the movie the scene is still blurry (e.g. 4 legs on a walking man).
Same if I rip the movie onto hd and play from there.

So what does kaffeine do differently from, say gxine or xine-ui?

Any xine gurus out there?

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SUSE 10.1, kde 3.51 level "a", kaffeine 0.83, latest driver nvidia 1.09, recent mid-range Athlon 64 CPU
no xgl-compiz-beryl waste of time running
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I know this isn't much of a solution. But if you tell Kmplayer to use Gstreamer it will play DVD's just lovely.

I know how you feel though. Is there no way that say three programs can do all the jobs in Linux and what's with all this different, yet very similar directories that you can't bloody delete! Grrr!