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Old 23 Nov 2002, 09:10 PM   #1
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Default Lanczos Resizing Query (Uncas?)

This is basically a follow-up on the discussion that Uncas and I had in one of the recent threads regarding the Lanczos resizer. I'm trying out the said plug-in and have got one question that I thought Uncas, or anyone else who has tried out the plug-in, can answer.

The documentation stated a basic format as follows:
LanczosResize(clip, int target_width, int target_height)

The "int target_width" and "int target_height" are easy enough to figure out. I have not much clue on the "clip" part though. What is the applicable range of value? And what should I use, assuming I'm going for maximum quality and, in another case, 'alright' quality?

I tried the following line and it, funnily, works:
LanczosResize(640, 352)
In this case, do you what value of c is being used?

I have just started playing around with the resizer and will see what I can find later on. Cheers.
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Old 24 Nov 2002, 10:28 AM   #2
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The Clip argument is for processing multiple source clips. But it can be omitted if you don't need it.

example
Code:
 
a = AVISource("d:\clip1.avi")
b = AVISource("d:\clip2.avi")
LanczosResize(a,640, 352)
LanczosResize(b,640, 352)
return AlignedSplice(a,b)
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Old 24 Nov 2002, 11:00 AM   #3
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So the c value has nothing to do with the scale of sharpness processing setting then? Excellent. Thanks, khp.
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Old 24 Nov 2002, 11:20 AM   #4
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Quote:
Originally posted by Enchanter
So the c value has nothing to do with the scale of sharpness processing setting then?
No not at all, the Lanczos filter has no such options.
Almost all avisynth filters support a clip argument in the same fashion.
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Old 24 Nov 2002, 12:30 PM   #5
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sorry, a little late here for me to answer

all said and done


did you do a first testrun?
how did you like the quality?

did you even try the combo: lanczos AND convolution?
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Old 24 Nov 2002, 07:31 PM   #6
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As I previously put, I haven't done any extensive testing with the plug-in (I recently deleted all of the VOBs that I had, and am waiting for another DVD to rip). The only testing that I did was on a low-quality source, and there really is nothing to complain about the resize quality anyway. I will definitely give this resizer a go with the next DVD I'm working on.
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