PAL interlacing problem

[anr]

hi all,

please excuse my lameness about interlacing, and yes, i've read 100fps.com, decomb guides, the forum, etc :)

very usually in pal dvds there is no interlaced material, some exceptions are pr0n movies :) and anime

but sometimes i get some PAL interlaced movies, i usually rip film material (if you call "film material", what is filmed for cinema, that is, not tv series and so)

i ever use decomb, with a simple telecide() command, sometimes i've only used FieldDeinterlace(), and it usually ever works perfectly (big thanks donald!)

now i have a problem, the movie is "Blue Velvet" by David Lynch
i've tried decomb and greedyhma, but the result is "jumpy",
so i loaded the avs script in virtualdub to verify if there were duplicated frames every 25 frames, and YES, *sometimes* the plugins (both greedyhma and decomb) outputs NEARLY exact frames, BUT NOT ALWAYS, just sometimes, in horizontal moving escenes, etc ...

i rendered the movie with Decimate(25), but it's not ok, it stills "jumps" but sometimes work ok

also i've tried to use the scripts of BottomFirst, and TopFirst to try to guess more about the source but my small brain has not got any conclusion :)

so what do you think?
what can i do? maybe, any advanced option in GreedyHMA ?

is there any LOGICAL or EXACT method to know the exact interlacing class of a PAL movie (i've read lots of things about true interlacing, bad NTSC->PAL, etc ...) ? and how to process it ?

thanks!
(excuse my bad english)
anr

[Guest]

I can try to help, but only if you can make available a source clip that shows the problem. Nothing can substitute for analysis of the source clip.

[anr]

hi donald,

thanks for your reply,
yes i still have the vobs in my HD, tell me what do you need and i'll send it to you

regars,
anr

[Guest]

Can you place a small VOB (10-20 Meg) that shows the problem on a web site for download?

[anr]

hi donald,

i've been having problems uploading files these days,
please excuse the delay, i'll try to upload them from other site
i'll send you an email when they are ready, maybe this night

regards,
anr

[anr]

hi again,

just to close the thread adding useful information:

- the movie was Blue Velvet PAL, it just had blended fields, so a perfect decombing is impossible, the problem is visible if you use a avisynth script with SeparateFields() with no crop, resizing, etc...

i used this one

LoadPlugin("C:\RIP\GORDIA~1\mpeg2dec.dll")
mpeg2source("C:\0divx\bluevelvet.d2v")
SeparateFields()

i can see "ghost" effects in the video using SeparateFields, so i know this movie has blended fields (correct me if i am wrong)

in this case, using Telecide() is not necesary, in this movie it output jerky video, (jumpy or whatever you want to call it)

as Donald told me, i just added a FieldDeinterlace(full=true),
and my final avs script:

LoadPlugin("C:\RIP\GORDIA~1\mpeg2dec.dll")
LoadPlugin("C:\RIP\GORDIA~1\decomb.dll")
mpeg2source("C:\0divx\bluevelvet.d2v")
FieldDeinterlace(full=true)
crop(21,72,687,429)
BicubicResize(672,288,0,0.75)

-------------

the final movie is nearly perfect! with no jerny panning scenes and nearly no ghost effects

someone could give a prize or whatever to donald for such useful plugin! and i am serious :D

regards,
anr

[Guest]

Thanks, anr. But it's just simple deinterlacing. :)

I'm happy that you got pleasing results.