Quantcast Telecide() and Decimate() Causes Skips? - digitalFAQ.com Forums [Archives]
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05-11-2003, 07:40 PM
nicksteel nicksteel is offline
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I have captured a movie with VirtualVCR with Huffy lossless codec at 352x480. I am using KDVD-352x480-Half-D1-NTSC with the following script:

LoadPlugin("c:\oldD\d\VideoUtil\MPEG2DEC2.dll")
LoadPlugin("c:\oldd\d\VideoUtil\sampler.dll")
LoadPlugin("c:\oldd\d\VideoUtil\decomblegacy.dll")
LoadPlugin("c:\oldd\d\VideoUtil\dustv5.dll")
LoadPlugin("c:\oldd\d\VideoUtil\legalclip.dll")
LoadPlugin("c:\oldd\d\VideoUtil\unfilter.dll")
LoadPlugin("c:\oldd\d\VideoUtil\fluxsmooth.dll")
LoadPlugin("c:\oldd\d\VideoUtil\GripFit_preview.dl l")
LoadPlugin("c:\oldd\d\VideoUtil\STMedianFilter.dll ")

aviSource("g:\rob.avi")
#fielddeinterlace()
telecide()
decimate()
LegalClip()
#GripCrop(480, 480, dest_anamorphic=false)
#GripSize(resizer="BicubicResize")
STMedianFilter(10, 50, 0, 0, 10, 50)
unfilter(50,50)
temporalsmoother(1,2)
mergechroma(blur(1.58 ))
mergeluma(blur(0.3))
#GripBorders()

#LetterBox(16, 16, 16, 16)
LegalClip()

Sampler(length=24)
##MPEG size = ((Total frames/MovieTimeInMinutes)/24) * MPEG sample file size ##

The film is full screen. When I use the above script and modify TMPGEnc to 480x480, the quality is excellent, but there is a regular skip. When I void Telecide() and Decimate() and change TMPGEnc to 29.97 interlaced, the quality goes south in a hurry, both in clearness and steadiness. I have tried all the templates, but only this one plays well on my machine (at least with captured cartoons).
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05-11-2003, 08:40 PM
kwag kwag is offline
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Hi nicksteel,

The problem could be with dropped frames in your source, which could then throw off telecide and decimate
What did you use to capture

Edit: Never mind, just re-read your post

-kwag
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05-13-2003, 10:36 AM
nicksteel nicksteel is offline
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Quote:
Originally Posted by kwag
Hi nicksteel,

The problem could be with dropped frames in your source, which could then throw off telecide and decimate
What did you use to capture

Edit: Never mind, just re-read your post

-kwag
I have viewed the capture source and believe that the problem occurs there. I have also tested by generating a 352x240 VCD and have the same motion problems. I know there are issues with my Cyberhome500 player, but I have never experienced problems at 352x240.

I am capturing cable (no digital box) with a WinTV90 card via VirtualVCR. I use Huffy lossless and have tried 640x480 and 352x480 resolution. I turn view off during capture. I am using a P4 2.53 with a 7500rpm harddrive under WindowsXP. Any advice on improving my captures?

My goal is 480x480 SVCD compliant output suitable for APEX, Cyberhome, etc).

I also have WinDVR, but have not been able to get very good results with it.
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05-13-2003, 11:13 AM
kwag kwag is offline
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Hi nicksteel,

You sure have the correct hardware
Let me ask you, does this happen on every channel
I have seen this problem in some of my satellite captures, and it's the station's telecine'ing process that is completely flaked up
On other channels, I don't have any problems.

-kwag
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05-13-2003, 11:29 AM
nicksteel nicksteel is offline
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Quote:
Originally Posted by kwag
Hi nicksteel,

You sure have the correct hardware
Let me ask you, does this happen on every channel
I have seen this problem in some of my satellite captures, and it's the station's telecine'ing process that is completely flaked up
On other channels, I don't have any problems.

-kwag
I will try some tests on other channels. The film giving problems is Robinson Crusoe, captured from network TV. What minimum resolution in VirtualVcr would you recommend for KVCD 352x480 Plus(modified to 480x480 in TMPGEnc)? The disk space required by Huffy is quite large (I have 70GB available). If I can arrive at a successful capture senario, I'll opt for an additional 200GB drive.
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05-13-2003, 04:01 PM
kwag kwag is offline
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Quote:
Originally Posted by nicksteel
What minimum resolution in VirtualVcr would you recommend for KVCD 352x480 Plus(modified to 480x480 in TMPGEnc)?
At least 480x480
Quote:
The disk space required by Huffy is quite large (I have 70GB available). If I can arrive at a successful capture senario, I'll opt for an additional 200GB drive.
The larger, the better! Make sure it's at least 7,200Rpm

-kwag:
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  #7  
05-14-2003, 08:08 AM
nicksteel nicksteel is offline
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Quote:
Originally Posted by kwag
Quote:
Originally Posted by nicksteel
What minimum resolution in VirtualVcr would you recommend for KVCD 352x480 Plus(modified to 480x480 in TMPGEnc)?
At least 480x480
Quote:
The disk space required by Huffy is quite large (I have 70GB available). If I can arrive at a successful capture senario, I'll opt for an additional 200GB drive.
The larger, the better! Make sure it's at least 7,200Rpm

-kwag:
A couple more questions. When I process a full screen, I use:

aviSource("g:\rob.avi")
#fielddeinterlace()
telecide()
decimate()
LegalClip()
#GripCrop(480, 480, dest_anamorphic=false)
#GripSize(resizer="BicubicResize")
STMedianFilter(10, 50, 0, 0, 10, 50)
unfilter(50,50)
temporalsmoother(1,2)
mergechroma(blur(1.58 ))
mergeluma(blur(0.3))
#GripBorders()

#LetterBox(16, 16, 16, 16)
LegalClip()

Sampler(length=24)
##MPEG size = ((Total frames/MovieTimeInMinutes)/24) * MPEG sample file size ##

When I process a widescreen, I use:

aviSource("g:\rob.avi")
#fielddeinterlace()
telecide()
decimate()
LegalClip()
GripCrop(480, 480, dest_anamorphic=false)
GripSize(resizer="BicubicResize")
STMedianFilter(10, 50, 0, 0, 10, 50)
unfilter(50,50)
temporalsmoother(1,2)
mergechroma(blur(1.58 ))
mergeluma(blur(0.3))
GripBorders()

LetterBox(16, 16, 16, 16)
LegalClip()

Sampler(length=24)
##MPEG size = ((Total frames/MovieTimeInMinutes)/24) * MPEG sample file size ##

Am I doing things properly for TV capure source?

Under what circumstances would I use Fielddeinterlace() instead of Telecide() and Decimate()? I've read posts and referenced documents, but am still a bit unsure.

When using the above scripts and processing 352x480 Plus modified to 480x480 at 29.97fps, I also change to interlaced from 3:2 pulldown, as TMPGEnc won't process 29.97fps with pulldown. Is this the right way?
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