[mythtv-users] Core 2 Duo iMac, terrible performance as front end
David Snider
dsnider at thesniderpad.com
Wed Feb 4 03:48:57 UTC 2009
Matt Emmott wrote:
>
>
> On Sat, Jan 31, 2009 at 5:47 PM, David Snider
> <dsnider at thesniderpad.com <mailto:dsnider at thesniderpad.com>> wrote:
>
>
>
> Dave, just to be clear, you mean:
>
> Utilities/Setup -> Setup -> TV Settings -> Playback (Page 2/10)
>
> and change both Vertical Scaling and Horizontal Scaling? I
> know I've tried this before but when I can pry the kids away
> from the Wii, I'm going to have another go.
>
>
>
> Yep, I change both of those to non zero values, watch a recording
> or live tv, then change then back to 0 and everything works. Not
> sure why.
>
> I've never had as good playback with .21-fixes as I had with
> .20.2. I have two Mac Minis running OS X for Myth. The
> frontend/backend is connected a Sony LCD projection set and to
> an A/V receiver using digital audio. The other mini is a
> frontend only connected to a computer monitor and using analog
> audio. For a description of the problems on the
> frontend/backend, see:
> http://svn.mythtv.org/trac/ticket/5552
>
> Todd Ignasiak posted earlier that he had good success with:
> Decoder: Standard
> Video renderer: quartz-blit
> OSD Renderer: softblend
>
> What deinterlacers are you using (primary/secondary)?
>
> While I'm at it, here are the Mac specific settings (pages
> 9/10 of the above group):
>
> Enable gamma correction for video: Off
> Scale video as necessary: On
> Frames to skip in fullscreen mode: 0
> Video in main window: On
> Frames to skip: 0
> Opacity: 100
> Video in floating window: Off
> Video on the dock: Off
> Video on the desktop: Off
>
> These are good, right?
>
>
> The only difference I have from yours is that I have Video on the
> dock: On with Frames to Skip set to 3.
>
> On page 3/10, I'm using CPU+ for my playback profile, even though
> I'll bet most of those settings aren't applicable, (XvMC, XVideo,
> etc.)
>
> Craig
>
>
>
> So, it appears things have gotten weirder - I made the recommended
> changes to the settings as follows:
>
>
> Decoder: Standard
> Video renderer: quartz-blit
> OSD Renderer: softblend
>
> And that didn't help. I then took David's advice changing the scaling
> to -25%, and I no longer have video in SD, just a black screen with
> audio. Changing the scaling back to 0 doesn't help, I'm currently
> stuck with no video for SD recordings and HD is as choppy as where I
> started! Now what?
>
Wow, sounds like we screwed you up really good. The only thing I can
think of is to delete all the settings for your particular frontend...
I believe, or manually tweak the settings in the db. Either way, you
want to look at the "settings" table in your database.
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