[mythtv-users] Watching HD streams on a SD set

[Enigma]

I have been attempting to watch HD recordings on a standard television 
set with limited success.  The frontend in question is has onboard Intel 
915G graphics using the i810 driver.

Whenever I view HD content on the frontend, I see massive interlacing 
artifacts when anything is remotely moving.  Do I need to run a 
deinterlacer if I am displaying on an interlaced device?  Is there a 
resolution at which I should be running the display that will be more 
efficient for the Myth player?  I am currently running the display at 
1024x768.  My SD tuner cards record at 720x480 and it seems to display 
fine on the set, but any HD material has herringbones whenever something 
moves.  Does anybody have any experiences or tips for displaying HD 
material on a regular set? 

Also, does anybody know if Myth supports XvMC for this device?  The wiki 
only mentions Nvidia and ATI cards but the driver documentation seems to 
indicate that the driver supports XvMC.  Has anyone successfully used this?