[mythtv-users] How to output to Standard TV
lists at glidos.net
Fri Feb 19 13:31:59 UTC 2010
David Watkins wrote:
>>> Scrolling (eg TV credits) is not smooth.
>> It can be smooth, if you match the screen resolution exactly
>> to the content (I'm assumint SD content), and use the
>> "Interlaced x2" deinterlacer (which isn't really an deinterlacer;
>> it just ensures the synchronisation is correct between content
>> and screen). TV credits are the ideal test for whether it is
> Thanks for that information, and I'll certainly give it a try.
> However I'm using DVB-T and some of my content appears to be 720x576
> and some 544x576 so I can foresee problems there.
Same here. 544x576 is fine. For one thing, that will be a 4x3
transmission and should get mapped to a 544x576 region of the 720x576
screen. And in any case, it is actually only the vertical resolution
that must match. Any HHHx576 screen mode will do. 1024x576 may be
a better option that 720x576, because then your screen will have
square pixels (I saw a post about that the other day, but haven't
had a chance to try it).
> Are you in the UK (or do you know whether what you said applies in the
> UK)? Somewhere I read that the uneven scrolling might be down to the
> fact that nvidia only supports 60Hz refresh rates over S-Video and
> programme content in the UK has a 25Hz frame rate. I don't really
> know if the second fact is true, but I can only get 60Hz modelines
> working on the S-Video output, and it sounded a plausible theory.
I am in the UK. Not sure about your problem. The only nVidia card I
tried was an FX5200, and I never managed to get that to produce
a suitable mode. ATI worked better for me; currently an on-mobo
X1200 or X1250 (can't quite remember). Frame rate can be another
problem: both framerate and vertical res must be matched for
it to work.
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