Input 25 fps to 23.976 fps Output

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Input 25 fps to 23.976 fps Output

Postby norlane » Tue May 25, 2010 7:20 am

have a .d2v file i made with DGIndex open in AvsP and .avs file i then use MeGui to encode to .mkv file before using mkvmerge to muxing the .mkv and
#### T80 3_2ch 448Kbps DELAY 0ms files .
My question is at some stage i want to get the fps from the VOB Files from 25 fps to 23.976 fps.
A what stage if any can i do this and am i better using VirtualDub instead of MeGui

I put this in the AviSynth section because i was wondering if there is a script for this.

thankx for you help
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Re: Input 25 fps to 23.976 fps Output

Postby mirkosp » Tue May 25, 2010 11:58 am

Depends on what kind of 25fps you have:
  • If it is 25fps progressive sped-up, then assumefps(23.976)
  • If it was made 25fps progressive by adding a frame or blending, then tdecimate(cycle=25).assumefps(23.976)
  • If it's full field interlaced PAL (generally the most likely), then you could bob.srestore to get the 23.976 back with as few blending as possible
  • If it's a hard telecine, then you can use tfm.tdecimate(cycle=25).assumefps(23.976)
  • If it's soft telecined, just select ignore pulldown in dgindex and directly assumeps(23.976) in avisynth.
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Re: Input 25 fps to 23.976 fps Output

Postby norlane » Tue May 25, 2010 2:10 pm

Origin is PAL VOB files so i think it is If it's full field interlaced PAL (generally the most likely), then you could
would i be right
then i would use bob.srestore to get the 23.976 back with as few blending as possible
Bob.SRestore(b=0.33, c=0.33, height=?) no sure how to fill the syntax out thanks

http://img594.imageshack.us/img594/6207/paldgtools.png
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Re: Input 25 fps to 23.976 fps Output

Postby mirkosp » Tue May 25, 2010 2:16 pm

Does look like it's full field interlaced from those, although DGIndex can be wrong... especially with PAL, it has been quite a few times. But I bet it probably isn't this one time. It generally fails to recognize soft telecined PAL, but this doesn't seem to be telecined in any way to begin with.
As for the syntax, using the defaults of srestore works fine.
Perhaps add a good temporal denoiser too, which might get rid of some extra blending artifacts. TTempSmoothF seems to work well to hit a bit of those without introducing artifacts.
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Re: Input 25 fps to 23.976 fps Output

Postby norlane » Tue May 25, 2010 4:56 pm

thankx for help, lot to learn, great forum
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Re: Input 25 fps to 23.976 fps Output

Postby Mister Hatt » Tue May 25, 2010 8:13 pm

What's the source?
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