[mythtv-users] native resolution vs 1080i for HDTV and SD on1280x768 lcd?

[James C. Dastrup]

>If I do add a HDTV tuner (planning to use OTA or QAM, not  cable tv provided external box) to the setup, 
>I'll need to use the FX5200.  I've searched and googled for a few days now and perhaps since my questions are so basic, 
>I've not found the answers. My questions are- Should I output via DVI at native resolution?  Or should I get an external 
>transcoder box to process the DVI or VGA out to component 1080i or 720p and let the tv scale to 1280x768? What 
>about one of the Nvidia 6200 or 6600 cards that have the HDTV  component outputs? they have a fan  (a minus), but since 
>these cards are now cheaper than a transcoder box may make more sense if the component outputs work in Linux.  And 
>finally, when you have a SD/HDTV myth setup, do you watch your SD content over the 1080i connection and let the video 
>card scale?  or would it be best to use 720p and use deinterlacing in mythtv?  (I will only be getting a few HD channels, 
>most of my viewing is still SD)  Or is there another completely differnt way to do this and I've just missed it?  Thanks,

I'm not sure what you mean by native resolutions. Do you mean change the resolution depending on what you're watching?
Is that possible in Myth? Even if that was possible, only CRT's support all native resolutions - all fixed pixel displays, such as
your 30" LCD will do their own conversion, either up or down. I would suggest outputting at whatever your TV supports, which sounds like it's probably 1280x720.
I watch both SD and HD content useing my Radeon 9600 SE's DVI connection straight the the HDMI input.
Resolution is set at 1280x720 (matches my TV) and all content gets scaled automatically by Myth.  All signals looks great.
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