[MPlayer-users] Re: Digital camcoder
Pasi Kärkkäinen
pasik at iki.fi
Thu Dec 4 11:43:35 CET 2003
On Thu, Dec 04, 2003 at 12:38:33PM +1000, Adam Nielsen wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> > > I would suspect panning/motion looks more choppy on NTSC, but
> > > interlacing artefacts (jagged look) are more visible on PAL. However
> > > I've never seen a PAL tv so I'm just guessing.
>
> > But interlaced content is different, it's not only jagged, it also make
> > scanlines much more visible. And IMHO, scanlines are nasty. Anyone that have
> > used an emulator would know them. Interlacing also make borders fuzzier.
>
> That's quite strange then - we have a 100Hz PAL TV (Loewe) and I can't see any
> artifacts or jagginess at all! Perhaps I'm looking for the wrong thing? I
> have a sneaking suspicion however that the TV might actually be progressive
> scan (or maybe it's just a side effect of the 100Hz) but with some things
> like fast motion, you can't see the scanlines at all yet other things
> (particularly credits/text scrolling quickly across the bottom of the screen)
> it's almost unreadable - and if you freeze frame the picture, you can clearly
> see it is interlaced, however it looks very much like a single frame - as if
> the TV is deinterlacing the picture and displaying it progressively.
>
> But of course watching the same content on my monitor you can clearly see that
> it is interlaced. Which brings me to another point - if you run your monitor
> in an interlaced mode and watch interlaced content with it, will it then
> appear like it would on a TV? I would've tried it already, only the
> GeForce2/MX series can't do interlaced video modes :-( I assume you'd
> *really* have to be careful to sync to the monitor's refresh rate too, but
> would it make any difference to the picture quality?
>
Not exactly what you were asking, but have you tried using tvtime
(http://tvtime.sf.net .. or dscaler on windows) and trying different
deinterlacing algorithms.. maybe it helps to learn how to look for right
things when comparing image quality etc..
-- Pasi Kärkkäinen
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