[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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