Problems with Mrestore

[Kroko]

Hi guys,

I have a videostream from an asian DVD. It was converted 1:1 from PAL to NTSC and I wanted to convert it back to progressive PAL. I used Mrestore because I read, that this is the best way to do it.
Here is a piece of that stream:
http://rapidshare.de/files/38901393/seaman.rar.html

And here's the script I used:

loadplugin("C:\Programs\AviSynth 2.5\plugins\mt_masktools.dll")
loadplugin("C:\Programs\AviSynth 2.5\plugins\leakkerneldeint.dll")
loadplugin("C:\Programs\dmpeg\dgdecode.dll") 
Loadplugin("C:\Programs\dmpeg\TIVTC.dll")
import("C:\Programs\AviSynth 2.5\plugins\mrestore\mrestore.avs")
mpeg2source("e:\seaman.d2v",cpu=4,iPP=true)
ord = last.getparity() ? 1 : 0
Leakkernelbob(ord,10,true,true)
mrestore(dclip=last.crop(8,8,-16,-8))

Bicubicresize(720,576)

I was very pleased with the result, it looked great on my TFT-PC-monitor and on my regular TV, also a friend who owns a plasma-TV said it looks just fine.
But two friends tried the stream on the LCD-TVs and said that it looks bad. They saw little pixels and lines moving over the picture, stair effects and so on.

Is very anything wrong in my script or is there any better way to do the convertation?

Thank you!

[manono]

Hi-

My opinion is that there's nothing wrong with what you did. You have to remember that these unblenders work by often taking bobbed fields to be used as the whole frames when the adjoining field, which would ordinarily be the other half of the frame, is blended. The smart bobbers are capable of giving you full resolution during static scenes, but when there's movement the best any of them can do is interpolate with varying degrees of success. The end result is lost resolution which leads to shimmer/aliasing. You could use a better bobber, but then the encode might take days instead of hours.

Also, it seems to be taking place in Japan and all the fine vertical and horizontal lines of Japanese tatami mats, screens, walls and the like are hell on deinterlacers. Also, you're taking a resolution that's already been degraded by the 40% or so of the frames being bobbed fields, and then upping the resolution to PAL 576 height, making the unblended resolution even a smaller percentage of the output and making the results even worse, compared to leaving it in NTSC resolution.

I do have a few quibbles, but nothing that will make a great deal of difference in the outcome (and might even make it worse). I'm not sure why you used the CPU and IIP settings in the MPEG2Source line, but maybe you have your reasons. You could use a better upsizer, such as Lanczos4Resize or even Spline16. The default Bicubic Resizer setting is the equivalent of BicubicResize(720,576,0.33,0.33), which is pretty lousy. But maybe you did that on purpose to intentionally soften the picture. And I don't think your resize to PAL resolution is correct, especially the removal of 16 pixels from along the right side (where it takes only a value of 4 to get rid of the black). But, again, maybe you have your reasons.