Strange Effect When deinterlacing.

[Master Yoda]

Im doing some test for myself.Now i tryed with the decomb.dll ..

FieldDeinterlace(blend=false)
FieldDeinterlace(blend=true)
FieldDeinterlace()

But when i open the avs in media player and VDub i get some funky squareness on the image, you can see it around shaggys hand... i was wondering how do i get ride of this to give me a good or at least decent picture with out creating a complicate script.

http://server5.uploadit.org/files/samuraimonkey-INTERLACED.JPG

[Mug Funky]

you got a field-blend of scooby doo? or is that from the deinterlacing?

try kerneldeint - it's uber fast now

do you have a snippet of the source we could play with?

[Master Yoda]

I not really sure whats what when deinterlacing.Its a pal extra thats interlaced.I tryed the decomb.dll option but got that strange effect when testing the script.So i gave kerneldeint a try and added kerneldeint(1) to the script.Now i didnt get those little squares but when clicking advanced in cce the Q.factor was'nt much lower than it was when i encoded it interlaced.I thought deinterlacing the image would give a better Q.factor at a avg.2500 but it didnt seem that much better.Quality wise.

So any tips on a line i can add to get me a better picture quality would be nice... thanks

This is the script..

import("I:\DVD Ripping Apps\DoItFast4U\new.avs\addaudio.avs")
Loadplugin("I:\DVD Ripping Apps\kerneldeint_25_dll_2003\kerneldeint133.dll")
LoadPlugin("I:\DVD Ripping Apps\DoItFast4U\new.avs\mpeg2dec3.dll")
Mpeg2Source("VTS__04_P05.4~3_1.d2v",idct=0)
KernelDeint(1)

AddAudio()
ConvertToYUY2(interlaced=true)

[scharfis_brain]

leave the PAL-Extras interlaced, cause they mostly are a hybrid of

fieldblended Film
and fieldblended Video/motioncompensated video

[Master Yoda]

Oh, ok.... how can i tell if they are hybrid or truely interlaced then ?

Maybe i'll just do them at half res like it was thinking of doing.

Thanks

[Cyberia]

Try changing these two lines:

mpeg2source("VTS__04_P05.4~3_1.d2v", idct=3, iPP=True, cpu2="XXXXXX")

and

KernelDeint(Order=1, Sharp=True)


Or if you used FD, you could also try:
FieldDeinterlace(Blend=False, Chroma=True)

But KD usually gives better results. There are also newer, faster and better versions of mpeg2dec3.dll and kerneldeint.dll

[Mug Funky]

oh, it's an extra? hehe. it's not going to be pretty then. the authors simply run an NTSC tape through a converter box with no regard to what's actually on it. so you've probably got field-blended-film as scharfi said.

this is why it isn't as compressible as you'd hoped - blended fields render motion-compensation almost useless, so most of your encoding is going to be intra blocks (read: high bitrate). there are some unblending techniques, probably the most successful being the restore24 script, but take it all with a pinch of salt, because it's probably never going to look good.

us PAL guys get the same problem with anime, unfortunately. japanese studios and their american counterparts simply do not make PAL masters most of the time, even if the source was originally from film.

[Master Yoda]

So, unless its a british movie or a british tv show the extras are more than likly what you guys said.... i was wondering if some could tell me how you can tell if it is or not or a web address explaining would be nice.I like to read up on these things.

But anyways if its like that its better not to deinterlace just re-encode it interlaced. Now i was wondering i just got mpeg2dec3.dll version 1.10(think thats the latest), normally my script will be Mpeg2Source("VTS__01_P01.16~9_1.d2v",idct=0),but from reading the doc file that came with the dll it said for interlaced soures its better to do Mpeg2Source("VTS__01_P01.16~9_1.d2v",idct=0,ipp=true), now would this improve the image quality at all or does it just make it easyer for the encoder to encode? also does having the latest version of mpeg2dec3.dll inprove on the image quality.

Thanks for your help guys.