[mythtv-users] XVMC Support for Intel 810

[Jeff Roberts]

I've got a couple of small compaq deskpro en's that i use for
frontends.  They are celeron 700's.  With the on board i810 they
couldnt handle 720x480 video from my pvr-500.  I bought a couple of
geforce mx4000 pci cards for them and now they work like champs.  I
highly reccomend this solution.  The pci geforce cards can be had for
less than $50 new.  A lot of them have svideo out as an added bonus.

On 12/6/05, Jeff Clemens <teedub303 at gmail.com> wrote:
> It does appear that the ATRPMS myth package has XvMC support (per a posting
> on the ATRPMS list that I found.  In any case, it doesn't seem to work with
> the Intel 810 as far as I can tell.  I just need a little acceleration, as
> most of the time, playback works perfectly, it's only after I've hit rewind
> or fast forward that the video starts to lag... It never catches back up,
> unless I slow playback down to 50% speed for 30 seconds... I can then switch
> it back to 100% (or faster) and have it run perfectly indefinitely (unless I
> rewind or fast forward again).  So just a little bit of acceleration would
> have things working perfectly.
>
> I'm considering turning off the onboard vga and picking up an nVidia card
> unless I can get acceleration working on the 810.  It would be nice to not
> have to use my one remaining PCI slot for vga, but if it works, that could
> be the solution.
>
>
>
> On 12/5/05, Todd Ignasiak <ignasiak at gmail.com> wrote:
> > If I remember correctly,   the Intel 810/815 chips don't support the full
> MPEG2 acceleration capabilities.
> >
> > XvMC supports offload of MPEG2 Motion Compensation (which is the "MC" in
> XvMC) and iDCT (inverse Discrete Cosine Transform).   iDCT is the more CPU
> intensive component of the two.   But, I think the i810 only offloads the
> MC.   So, you probably won't get much boost out of XvMC on that platform.
> >
> > A Google search turn up this page, which talks about the capapilities of
> various cards with DxVA, the Windows equivalent to XvMC:
> http://www.elecard.com/technology/dxva.shtml    (Note that
> it doesn't include the newer NVidia GeForce 4MX or GeForce FX cards, which
> support full iDCT offload in Linux.)
> >
> >
> >
> >
> > On 12/4/05, Jeff Clemens < teedub303 at gmail.com> wrote:
> > >
> > >
> > > So from what i've read, XVMC was originally developed for the Intel 810
> chipset, but I can't seem to find any information on how to get it working
> with anything but nVidia video cards.
> > >
> > > I'm running FC4 on a fairly underpowered (700Mhz) box.  I actually have
> 2 of the same boxes, but one uses a PVR350 and therefore uses the
> accelerated output, but my other box uses VGA for display, and I get really
> choppy video without XVMC.  If I enable XVMC in the setup screen, I get
> "Can't initialize Video" messages when trying to playback a recording.
> > >
> > > Any tips/tricks that anyone on here knows about?
> > >
> > > Thanks,
> > >
> > > Jeff
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> > >
> >
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