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-   -   Telecide() and Decimate() causes skips? (http://www.digitalfaq.com/archives/encode/3576-telecide-decimate-causes.html)

nicksteel 05-11-2003 07:40 PM

Telecide() and Decimate() causes skips?
 
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).

kwag 05-11-2003 08:40 PM

Hi nicksteel,

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

Edit: Never mind, just re-read your post :roll:

-kwag

nicksteel 05-13-2003 10:36 AM

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 :idea:
What did you use to capture :?:

Edit: Never mind, just re-read your post :roll:

-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.

kwag 05-13-2003 11:13 AM

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

nicksteel 05-13-2003 11:29 AM

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.

kwag 05-13-2003 04:01 PM

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:

nicksteel 05-14-2003 08:08 AM

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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