View Single Post
Old 8th December 2011, 12:35   #2  |  Link
Didée
Registered User
 
Join Date: Apr 2002
Location: Germany
Posts: 5,389
It are interlaced frames that are missing (dup-replaced) in the source file. Therefore in the gaps there are 2 fields missing, hence you need to fill in 2 frames after bobbing.

Code:
ab cd ef gh ij kl mn op           #  (1) interlaced original

ab ab ef ef ij ij mn mn           #  (2)  oddframes dropped, evenframes doubled

A B x x E F x x I J x x M N x x   #  (3) this is needed, but can't be constructed directly

A . . B x x E . . F x x I . . J x x M . . N x x   #  construct this (2 newframes for each), 
0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5   #   then select
With (2) being the source you're starting with.


Code:
# NTSC 30fps source

selectodd # to  15fps

bob  # back to 30fps

assumefps(30)
InterFrame(Preset="Placebo",Tuning="Film",NewNum=90,NewDen=1,...) # tripling to 90fps

SelectEvery(6,0,3,4,5)
AssumeFPS(60000,1001)  # now have reconstucted 60p.
No guarantee this works directly (cannot try now with your sample), but you see the principle.
__________________
- We´re at the beginning of the end of mankind´s childhood -

My little flickr gallery. (Yes indeed, I do have hobbies other than digital video!)

Last edited by Didée; 8th December 2011 at 12:39.
Didée is offline   Reply With Quote