Avisynth: Problems with Interlacing

Leksa · #1 09-21-2004, 02:57 PM

I´m doing a DVD to KVCD conversion of Dracula 2001. The problem is that there´s combing in the upper parts of the movie and I can´t get rid of it. So now it´s time for you interlacing gurus to step in and give a helping hand how to proceed...

Here´s the script i used:

Code:

## DLL Section ## 
# 
LoadPlugin("C:\Filters25\MPEG2Dec3.dll") 
LoadPlugin("C:\Filters25\GripFit_YV12.dll") 
LoadPlugin("C:\Filters25\STMedianFilter.dll") 
LoadPlugin("C:\Filters25\asharp.dll") 
LoadPlugin("C:\Filters25\unfilter.dll") 
LoadPlugin("C:\Filters25\undot.dll") 
LoadPlugin("C:\Filters25\kerneldeint.dll")
LoadPlugin("C:\Filters25\VSFilter.dll")
# 
#### 
## Main section and static filters ### 
MPEG2Source("H:\dracula.d2v")
#SeparateFields()
KernelBob(order=1,sharp=true,threshold=7) 
# 
# 
undot() 
asharp(1, 4) 
GripCrop(528, 576,source_anamorphic= true, dest_anamorphic= true) 
GripSize(resizer="BicubicResize") 
STMedianFilter(3, 3, 1, 1 ) 
MergeChroma(blur(1.5)) 
MergeLuma(blur(0.1)) 
# 
# 

## Linear Motion Adaptive Filtering ## 
# 
# ( Portions from AviSynth's manual ) 
# This will apply variable temporalsoften 
# and variable blur. 
# Both filters are active at all times, and work inversely proportional to the 
# activity, measured from current frame to next frame. 

ScriptClip(" nf = YDifferenceToNext()" +chr(13)+ "unfilter( -(fmin(round(nf)*2, 100)), -(fmin(round(nf)*2, 100)) ).TemporalSoften( fmin( round(2/nf), 6), round(1/nf) , round(3/nf) , 1, 1)  ") 


Textsub("H:\draku.srt")
GripBorders() 
#LetterBox( Your_Values_Here ) # Depends on situation. Use MovieStacker! 

# 
# 
## Functions ### 

function fmin( int f1, int f2) { 
  return ( f1<f2 ) ? f1 : f2 
} 
  
# 
####
#  
SeparateFields() 
SelectEvery(4,0,3) # SelectEvery(4,0,3) for bottom field first video (4,1,2)
Weave()

Thanks in advance!

incredible · #2 09-21-2004, 04:21 PM

Shure!
You keep your source interlaced as you do all your filtering in a purpose to KEEP the source treaten and kept interlaced!

Get rid of

Code:

KernelBob(order=1,sharp=true,threshold=7)

and ...

Code:

SeparateFields()
SelectEvery(4,0,3) # SelectEvery(4,0,3) for bottom field first video (4,1,2)
Weave()

and use instead just ...

Code:

MPEG2Source("H:\dracula.d2v") 
Fielddeinterlace(full=false,blend=false) # or blend = true
....
...
..

Leksa · #3 09-26-2004, 12:40 PM

Thanks for the tip Incredible!

Now I got another problem, I can't get the right parameters for the GripCrop- line. I just keep getting an error message: invalid arguments to function "GripCrop". I used FitCD for finding the "right" parameters. What am I doing wrong?

Prodater64 · #4 09-26-2004, 12:47 PM

Quote:

Originally Posted by Leksa

Thanks for the tip Incredible!

Now I got another problem, I can't get the right parameters for the GripCrop- line. I just keep getting an error message: invalid arguments to function "GripCrop". I used FitCD for finding the "right" parameters. What am I doing wrong?

Perhaps withdrawing blank spaces inside gripcrop function?

Leksa · #5 09-26-2004, 01:25 PM

Quote:

Originally Posted by Prodater64

Perhaps withdrawing blank spaces inside gripcrop function?

Blank spaces or not, the problem still remains.

fabrice · #6 09-27-2004, 12:02 AM

Hi,

By default source_anamorphic is true, so you can get rid of this parameter.
You don't have overscan in your parameters. Can you try adding overscan=0, and leave gripcrop line like this:
GripCrop(528, 576, overscan=0, dest_anamorphic=true)

If it don't work, can you post your last script?

Salu2
Fabrice

Peter1234 · #7 09-27-2004, 12:20 AM

Leksa,
I do not know if this will help, but I always put my functions after the script. You have them before the end of the script. Try moving the last 3 lines before the functions.

Dialhot · #8 09-27-2004, 03:42 AM

Functions can be anywhere in the script.

incredible · #9 09-27-2004, 05:21 AM

Quote:

Originally Posted by Leksa

.....I can't get the right parameters for the GripCrop- line. I just keep getting an error message: invalid arguments to function "GripCrop". I used FitCD for finding the "right" parameters. What am I doing wrong?

Decide WHAT to use:

- GripCrop (where you put your target size just in the GripCrop() line, so GripCrop will find the "right" parameters internally by itself! )

or

- FitCD (where you ONLY use the conventional commands WITHOUT the usage of GripCrop)

So DONT use FitCD parameters WITHIN GripCrop as GripCrop only handles correct mpeg-input-resolutions/output-resolutions

Leksa · #10 09-27-2004, 01:04 PM

Quote:

Originally Posted by incredible

Decide WHAT to use:

- GripCrop (where you put your target size just in the GripCrop() line, so GripCrop will find the "right" parameters internally by itself! )

or

- FitCD (where you ONLY use the conventional commands WITHOUT the usage of GripCrop)

So DONT use FitCD parameters WITHIN GripCrop as GripCrop only handles correct mpeg-input-resolutions/output-resolutions

And these are the magic words! You're the man, Inc! Thanks a lot!

Now everything works like charm. Maybe now and in the future I will be able to understand the world of interlacing, KVCD and avisynth a little bit better.