[mythtv-users] What don't I get here? (Interlaced playback...)

Steve Smith st3v3.sm1th at gmail.com
Fri Jun 15 09:20:16 UTC 2007

Thanks everybody for the answers... as a quicky I'll give bob a go, then
I'll build the RGB cable it seems the only way to get the picture I really
want (given my lowly P3).
(Pity I wanted to be able to use a composite vid/s-video input to the telly
as the RGB is hogged by the cable box itself and needs to be manually
switched over. Got to keep the WAF up ;-)!!!!).



On 14/06/07, Mark Kendall <mark.kendall at gmail.com> wrote:
> On 6/14/07, Steve Smith <st3v3.sm1th at gmail.com> wrote:
> > So am I correct in my analysis? Is the mythfrontend actually playing 25
> full
> > frames a second or 50  fields a second?
> The pedantic answer is that it's actually doing both, but I don't
> think that's really your issue :)
> Your number one problem is s-video. It's been a long time since I used
> it in anger but I never had a good quality picture using s-video
> input. The main problem (I think) is that the nvidia drivers do a
> certain (large) amount of scaling and I'm not even sure that the final
> output is properly interlaced.
> > How can I get the "correct" output  of 50 fields a second where
> potentially
> > the two fields in each frame can contain movement?
> > Would using a CRT output (RGB to SCART) instead of S-VIDEO help? (in
> this
> > respect not just overall quality)
> If you've only got a scart input (ie no dvi etc), an RGB to SCART
> converter is definitely the way to go. You'll notice an immediate
> improvement in picture quality if you get it working correctly (I've
> been playing with scart input to my lcd and crt tv's today). I'd
> probably go as far as to say that it's the best picture quality you'll
> get for standard definition PAL - i.e. if you can get it  working
> well, it will match the quality from stb's, dvd players etc.
> >i.e. is the NVidia TV-Out doing something
> > to the timing...e.g. insisting on using 60hz without telling me thus
> > throwing out the timings, or maybe even forcibly de-interlacing the
> picture?
> Probably the latter...
> regards
> Mark
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