[mythtv-users] Core 2 Duo iMac, terrible performance as front end

[David Snider]

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.