Quantcast Should AVI Capture Have Resolution Equal to Output Video? - digitalFAQ.com Forums [Archives]
  #1  
02-20-2004, 09:10 AM
radunn radunn is offline
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I am capturing VHS to HDD (AVI format) and would like the "best" quality possible; be it, kvcd or ksvcd. My first question is should the initial capture (*.avi) have an equal resolution of that of the final output? i.e. if output is ksvd (352*480) should initial be the same?

Next, which kvcd template will give me the best quality results on cdr/dvd; ksvcd/kvcd.. and should I leave the template settings at their default values? What does lowering/raising the CQ do?

I was told in a previous thread that frame serving from Virtualdub to TMPGEnc is not desired; is this correct and to demux the audio/video to reduce sync issues.. then mux the two in tmpgenc?

Apparently, Avisynth is the "kvcd way" but I have no experience with it; having been to the forum. If someone could post basic Avisynth scripts necessary (or which scripts to use) for denoising, cut/trim; this might be sufficient as I am not yet at a level where applying multiple scripts is necessary. All of the encoding movies will be played back on a stand alone dvd player so deinterlacing is not needed?

Thanks for your support; as I am determined to get the best from KVCDs!
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  #2  
02-20-2004, 09:49 AM
Dialhot Dialhot is offline
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Give a look at kvcd.net homepage, you will find basics guides on the right panel.

For the scripts, the most achieved one are there :

http://www.kvcd.net/forum/viewtopic.php?t=3483
http://www.kvcd.net/forum/viewtopic.php?t=7223

Basically, you just have to adapt them to your local situation by changing the name of the source and the size of the target you want.
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02-20-2004, 10:53 AM
radunn radunn is offline
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Ok, just copy/paste into the *.avs as is from VHS and captures Code or do values have to be entered between the "()"?

LegalClip()
unfilter(50,50)
GripCrop( X, Y )
GripSize(resizer="BicubicResize")
STMedianFilter(8, 32, 0, 0, 8, 32)
FaeryDust() # or PixieDust()
mergechroma(blur(1.50))
mergeluma(blur(0.2))
# Convolution3d or DCTFilter for extreme worse cases.
GripBorders()
LegalClip()

I know "somewhere" i must list the path of the *.avi in the *.avs.

There's no need to cut/trim in Virtualdub if Avisynth is used? The only script I'd need is scenes etc. to cut from the orig *.avi. Thanks for your support and patience.
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02-20-2004, 10:57 AM
Dialhot Dialhot is offline
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Note: be carreful as the VHS script is rather old and was never updated (as not a lot of people are doing VHS).
THis script uses avs2.08 and not 2.54

You should also go to there to learn the basics of scripting (you will understand were you are supposed to give the name of the avi) :

http://www.avisynth.org/index.php?page=YourFirstScript
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02-20-2004, 11:00 AM
radunn radunn is offline
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Ok, so I take it there is "not" a current vhs script? If anything needs to be altered in the 'old' script, do you have an idea/hint as to what it should be?

Eventually I will learn Avisynth. Is it faster/better than frame-serving from VirtualDub to TMPGEnc? Again, thanks!
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02-20-2004, 11:31 AM
Dialhot Dialhot is offline
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Unfortunally a lot of things. And one of them can by bypassed :

- Legalclip becomes Limiter (easy)
- StMedianFilters has only 4 param and becomes STMedianFilter(8, 32, 0, 0) (I hope I do not do any mistake)
- FaeyDust do not have any equivalent
You can try to use "Deen()" insteed but it is not really a equivalent filter (but still a godd one).

Note: it is not "eventually"; Every thing in life starts by reading the documentation. At least for the basics.

And yes it a LOT better and faster.
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  #7  
02-20-2004, 12:01 PM
Prodater64 Prodater64 is offline
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Hi: Somebody tell me that DCTFilter isn't good for mpg2 files. Isn't it?
In this case, how would be Dialhot's V4 script for mpg2 files?
Thank you.
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02-20-2004, 12:03 PM
Dialhot Dialhot is offline
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"Somebody" was wrong that's all. Or explain a bit more what you read.
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02-20-2004, 12:31 PM
incredible incredible is offline
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Quote:
Originally Posted by Prodater64
Hi: Somebody tell me that DCTFilter isn't good for mpg2 files. Isn't it?
As both, mpeg1 and mpeg2 base on a 8x8 DCT matrix, he defenitely didn't tell you the truth.

Inc.
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  #10  
02-20-2004, 01:02 PM
Prodater64 Prodater64 is offline
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I'm sorry. I didn't receive further explanations. But I think that if him read this post, he can explain us it.
(excuse me, my english is so bad)
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  #11  
02-20-2004, 06:45 PM
Dialhot Dialhot is offline
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Name him, name him !
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