[mythtv-users] How do you compile with support for TV Out on PVR 350?

Jim Paris jim at jtan.com
Sat Nov 1 13:08:50 EST 2003


> >This is called 'overscan', and it's perfectly normal.  If it didn't act 
> >like this, the horizontal scan lines from the card wouldn't line up with 
> >what's on the TV, and everything would look like crap.
> 
> So are you saying that the framebuffer strictly fills the
> raster at 480 lines with no horizontal scaling? And therefore,
> an Nx480 capture is guaranteed to align each scan line of the
> capture with the same scan line in the TV-out NTSC signal
> (provided VertScanPercentage is 0)? If so, I'll buy one of
> these today ;-).

For the PVR-350, yes, the MPEG decoder always outputs 720x480 and
aligns the scanlines exactly.  This is independent of
VertScanPercentage, since it's the hardware doing it.

-jim


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