[MPlayer-users] Optimization for a slow CPU

Grant emailgrant at gmail.com
Thu Sep 7 21:36:23 CEST 2006


> > > In case you haven't checked, you should make sure that you have
> > > activated DMA on your drive (check with hdparm)
> >
> > I'm actually getting this error when hdparm tries to set DMA on
> > /dev/hdc at boot:
> >
> > HDIO_SET_DMA failed: Operation not permitted
> >
> > How can I investigate that?
> >
> > - Grant
>
> Ok, I've fixed the DMA problem by enabling an extra kernel option.
> DMA is now definitely enabled on my DVD player.  The current situation
> is:
>
> 1. audio and video no longer cut out without -framedrop, but they are
> very out of sync with each other

I spoke a little too soon on this one.  The audio just cut out with
"too many video packets in the buffer."  DMA doesn't seem to have made
much, if any, difference here.

- Grant


> 2. -framedrop results in the audio and video in sync, but the playback
> is pretty jerky
>
> 3. I still have the problem with horizontal lines around the edges
> that I started a separate thread about



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