Phill Edwards wrote:




I'm in Australia so I'm using PAL. I read that the recording dimensions


for


PAL should be 720 wide x 576 high, but when I do this I notice that it


uses


a lot more CPU (20% more) and the picture quality improvement is only
marginal. Is 720 x 576 right?



Yes, I believe that is the correct resolution for PAL. Where exactly
are you setting this resolution - as you state below, X doesn't like
resolutions that aren't available on your video card.



In the mythtv ASettings -->T Vsettings --> Recording Profiles --> Software Encoders on the Image Size screen.

It sounds like that is where your cpu usage problem is. I think the front-end will be trying to resize the output when it doesn't need resizing (because it's already at 720x576). But what you've changed doesn't modify the resolution of your X output. What I think you want to do is create an appropriate mode line in your /etc/X11/XF86Config-4 file to output X at 720x576.

I tried doing this myself and found it much easier to just run at 800x600. As Rob said, it's fairly close and it works (with monitors and TV output). I'd definitely try and get the native resolution of a HDTV working, but I don't think it will make much of a difference for a standard definition, direct view TV.

Craig...
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