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Old 8th December 2011, 11:30   #1  |  Link
Dogway
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Join Date: Nov 2009
Posts: 1,550
Source underlying framerate - Conversion

hello, here I have a funny source I think I solved but output framerate comes to be a bit strange.

You better download the sample to understand, but I explain:

source is interlaced NTSC, but only every other frame is a new frame, that is in fields: ab,ab,cd,cd...
-so select odds: ab,cd,ef...

-then bob and get NTSC 29.970 fps output with no dups. BUT, every 2 frames there is a bigger jump, just if the next had happened: ab,cd,gh,ij,mn...

-so I frame interpolate those missing frames, and I get 44.955fps. What kind of framerate this is? It's not even near any standard...
Code:
# NTSC 30fps source

selectodd # to  15fps

bob  # back to 30fps

InterFrame(Preset="Placebo",Tuning="Film",NewNum=60000,NewDen=1001,...) # to 60fps

selectevery(4,2,3,4) # To 45 fps. Skip the no-gaps interpolated frames.
Sample 60Mb (sorry there is little motion to catch):
http://www.mediafire.com/?722eb33nz5c3c6t

Last edited by Dogway; 8th December 2011 at 11:32.
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dup, framerate, gap, interlaced

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