[mythtv-users] CPU not enough to drive 1080P? Core2duo

[Robert McNamara]

No, if it were me I would stick with the video card and just use opengl
video rendering.  You would be the one to tell me whether you configured
with the --enable-opengl-video flag.  If you didn't, then yes, you will need
to recompile with it.  Playback profiles are located in
Utilities/Setup->Setup->TV Settings->Playback and are on the third page.
 They are essentially "rules" for various resolutions that set deinterlacers
and renderers.  So, I have no idea what the default ones are, but find the
one that encloses 1920x1088 resolution (probably the last one on the page,
something like >1280 720 or >1280 720 and <= 1920x1088 or something like
that.  Hit the edit button for that rule.  For maximum speed, I would remove
all deinterlacers (Primary and Fallback deinterlacers to "none") and set
video-renderer to opengl.
Then go back and try to play 1080 content and report with any results.

Robert

On 2/5/08, Mark Hutchinson <mark at onnow.net> wrote:
>
>
> On 5-Feb-08, at 5:52 PM, Robert McNamara wrote:
>
> > It's very unlikely that this particular C2D will have the oomph to
> > play 1080p at anything over a low bitrate.  Yes, cue all the people
> > talking about how their lower-spec processor is able to play 1080p
> > stuff, etc., etc.   I have this argument in the IRC channel on a
> > near daily basis.  Stuff people download is *not* high bitrate and
> > tends to be around 10 Mbit/s.  Real 1080p material *starts* at about
> > twice that (18 Mbit) and Blu-ray's spec goes up to 40 Mbit/s.
> >
> > That said, it's very very very doubtful that anything you're getting
> > from television is 1080p.  It's far more likely that it's 1080i and
> > that material should be fairly easy for this machine to handle.  I
> > have heard rumblings about xv-blit being problematic with 8600
> > series nvidia cards.  Have you tried the OpenGL video renderer for
> > this material?  It may work much better in this case.  Since you are
> > running SVN, you need to have compiled with --enable-opengl-video,
> > and you can then adjust your playback profiles to make opengl the
> > renderer across the board.
> >
> > Let me know.
>
> You are right, from the HD Settop box, it is 1080i.  Would it be
> better to get a better vid card ( not the 8600 ) or recompile?  If I
> do recompile, how do I enable that for playback profiles?  I am not
> familiar with that?
>
> Thank you,
>
> Mark
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mythtv.org/pipermail/mythtv-users/attachments/20080205/4bb8da02/attachment.htm