Quantcast KVCD: Motion Prediction? - digitalFAQ.com Forums [Archives]
  #1  
07-30-2002, 10:22 AM
jamesp jamesp is offline
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Hi Kwag - thanks for the 704x576 template. Amazing really! I Increased the Average bitrate to 3500 and got superb results fitting a 90min film on 2 CD's. I've spent loads of time playing with CVD and never really got sharp results like this.

One question though. In the template 'motion prediction' is set to Normal. With the exteded GOP etc in the template, how much of an effect does motion prediction have and is it better just leaving it at Normal.

Jim
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07-30-2002, 10:39 AM
kwag kwag is offline
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Quote:
Originally Posted by jamesp
Hi Kwag - thanks for the 704x576 template. Amazing really! I Increased the Average bitrate to 3500 and got superb results fitting a 90min film on 2 CD's. I've spent loads of time playing with CVD and never really got sharp results like this.

One question though. In the template 'motion prediction' is set to Normal. With the exteded GOP etc in the template, how much of an effect does motion prediction have and is it better just leaving it at Normal.

Jim
Hi Jim:

I have tried all modes, and there is a little better "artifact" cleanup using "Motion estimate Fast". But the file size created is much larger than with the "Normal" setting.

-kwag
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07-30-2002, 04:07 PM
jamesp jamesp is offline
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Kwag,

Something strange happened but it could be my dvd player. When i added sound to my kvcd (i know - i viewed the 1st results without sound!) very rarely the picture seems to stutter like its slowing down so things can catch up. Sometimes if i rewind and watch the same clip again it doesn't happen. This happens rarely.

Could i have muxed the VCD wrongly with the sound. I produced the sound in TMpeg using the WAV extracted from DVD2AVI. I then muxed the sound and video together as a non VCD standard mpeg file . Could this be causing the problem or is my player (dansai 1010) just sometimes struggling with the vcd format.

Jim
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07-30-2002, 04:29 PM
kwag kwag is offline
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Quote:
Originally Posted by jamesp
Kwag,

Something strange happened but it could be my dvd player. When i added sound to my kvcd (i know - i viewed the 1st results without sound!) very rarely the picture seems to stutter like its slowing down so things can catch up. Sometimes if i rewind and watch the same clip again it doesn't happen. This happens rarely.

Could i have muxed the VCD wrongly with the sound. I produced the sound in TMpeg using the WAV extracted from DVD2AVI. I then muxed the sound and video together as a non VCD standard mpeg file . Could this be causing the problem or is my player (dansai 1010) just sometimes struggling with the vcd format.

Jim
To tell you the truth Jim, I've never heard of a dansai 1010 player , so I can't say. What about the samples that have audio. Have you been able to burn those for testing?

-kwag
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07-30-2002, 04:47 PM
jamesp jamesp is offline
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I thought the samples had no audio - will give them a try and see what happens.

By the way - when encoding at 704x568 is there really any need to use the avisynth temporal smoother?
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07-30-2002, 05:46 PM
kwag kwag is offline
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Quote:
Originally Posted by jamesp
I thought the samples had no audio - will give them a try and see what happens.

By the way - when encoding at 704x568 is there really any need to use the avisynth temporal smoother?
There are samples with audio. The ones at the main page have audio.
You only need to use the temporal filter, if your source is not too clean. But use it with a very low value, because high values will spoil your picture.

-kwag
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