[MPlayer-users] Re: Digital camcoder

[Pasi Kärkkäinen]

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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