[mythtv-users] HD on SDTV playback question

Steven Adeff adeffs.mythtv at gmail.com
Mon Feb 26 18:19:22 UTC 2007

On 2/26/07, Rod Smith <mythtv at rodsbooks.com> wrote:
> On Monday 26 February 2007 10:59, jason maxwell wrote:
> > So are you guys saying that the 5200 based cards will do a better job
> > rendering HD content than it's successors? or is it 5200 or newer that
> > I should be looking for?
> > I ask because finding either a PCI-e 5200 card, or an AGP slot on a
> > modern mobo, will severely limit the possible configurations of my
> > planned system.
> I'm by no means an expert on this, but my understanding is that the nVidia
> 6200 and later chipsets have removed support for some features that can be
> useful in XvMC and/or in Linux generally. I get this impression from the
> following:
> http://www.linuxis.us/linux/media/howto/linux-htpc/video.html
> http://www.blogcadre.com/blog/justin/mythtv_high_definition_minimum_requirements_2006_12_02_21_13_05
> I'm pretty sure I read more about this somewhere else, but I'm not sure where,
> I'm afraid.

Both those links are wrong in their assumption that video tearing has
anything to do with the difference between the cards. I saw tearing
with my 5200 and upgraded to the 6200 to try and get rid of it. Sadly,
no dice. It seems the HD tearing issue has been solved (dare I say
that?) with the 9xxx series drivers and the "UseEvents" option.

What is true is what Kevin said, that only the 5xxx series cards
support the color OSD hack when using XvMC. This should not be an
issue in the future if the OpenGL rendering work being done in the
mythtv-vid branch works out and gets merged for release. When this
will happen, and if it will allow something like a 6200TC to process
mpeg2 1080i in the GPU we will have to wait and see.

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