Quantcast KVCD: KVCDx3 Result = Jerkiness - digitalFAQ.com Forums [Archives]
  #1  
09-23-2002, 08:13 AM
jmjarvis jmjarvis is offline
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After converting a perfectly good source, which plays great on the laptop, I've ended up with a fantastic quality movie BUT its very very jerky.

What I mean by this is, for example, when the camera pans it is simply jerky. Its like a few frames a second are being missed out. If someone is running its not smooth.

My source is SVCD (mpeg2 video/audio ).

Can anyone help ?
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Someday, 12:01 PM
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  #2  
09-23-2002, 12:54 PM
Turbo Turbo is offline
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Hi jmjarvis,

Try changing the GOP-structure to 1-3-3-1. For me, in most of the cases that helped.

Turbo
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09-23-2002, 02:36 PM
kwag kwag is offline
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Quote:
Originally Posted by jmjarvis
After converting a perfectly good source, which plays great on the laptop, I've ended up with a fantastic quality movie BUT its very very jerky.

What I mean by this is, for example, when the camera pans it is simply jerky. Its like a few frames a second are being missed out. If someone is running its not smooth.

My source is SVCD (mpeg2 video/audio ).

Can anyone help ?
Looks like you're encoding with the KVCD template set at 23.976, but your mpeg file is 29.97. It your source was shot FILM (24fps), you should IVTC.

-kwag
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  #4  
09-23-2002, 02:57 PM
jmjarvis jmjarvis is offline
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Hey Kwag,

Can't get anything past you

Yep my source was 23fps.

I only have two little niggles now (had soooooo many until I discovered you and your templates was about to give up - a huuuuuuuuge thank you for that ) and one of them was the jerkiness - mentioned above.

The other is the audio delay, I think, caused by DVD2AVI. Like I mentioned before I cannot open the source in TMPGenc. The only way to do this is using DVD2AVI B4 TMPGenc.

I have read sooooo many posts frrom you about using these 2 programs and that you have no problems. I wondered if you could knock together some quick notes on what settings you have for HeadAC3he and bbMpeg as I have never used these before ?

You mentioned IVTC - should I use tmpgenc to do this ?
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09-23-2002, 03:04 PM
kwag kwag is offline
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Quote:
Originally Posted by jmjarvis
You mentioned IVTC - should I use tmpgenc to do this ?
It's far better to use decomb.dll in a AviSynth script.
Just add the following two lines in your script:
Telecide()
Decimate()

Your script should look something like this:

LoadPlugin("C:\encoding\MPEG2DEC.dll")
LoadPlugin("C:\encoding\decomb.dll")
AviSource("C:\capture.avi")
Telecide()
Decimate()
BilinearResize(336,224,0,5,352,470)
#TemporalSmoother(2,2)
AddBorders( 8,8,8,8 )

Then just encode at 23.976fps with your KVCD template. Use the above as a sample for the position of the telecide and decimate lines. The other parameters are from a capture file I had, and yours will be different.

-kwag
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  #6  
09-23-2002, 03:26 PM
jmjarvis jmjarvis is offline
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Hey Kwag,

Thanks for the quick reply.

Forgive the silly question here but there are only 2 KVCDx3 templates - and I get 3 kind of sources. Do I choose the KVCD template I want the output to be or do I pick the template to match the source ?

> "It's far better to use decomb.dll in a AviSynth script."

Kind of confused here - could you please explain ?

If I can open the source directly with TMPGEnc then I pick the template I want the source to be otherwise I open it up in DVD2AVI -> do a save project -> open it up in TMPGenc and then pick the template I want the source to be - am I doing something really silly here -

TIA
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  #7  
09-23-2002, 03:54 PM
kwag kwag is offline
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Use the template that corresponds to your source. Either the NTSC or PAL. In this case, you would use the NTSC template.

Have a read here on IVTC: http://www.inmatrix.com/articles/ivtc.shtml
And here's the decomb guide: http://www.doom9.org/index.html?/decomb.htm

-kwag
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