What does "Pulldown" mean?

[RogerB1]

Sorry, I see it all the time here but don't know what it means. thanks :hv20-smilie03:

[hizbiz]

Sorry, I see it all the time here but don't know what it means. thanks :hv20-smilie03:

Roger,
search for a post by 24Peter. He explained it very well somewhere in the forum.
Anyway just to reiterate, 24P basically means 24 frames per second, where as the normal HDV means 30 frames ( 60 interlaced fields to be correct) per second. So when the camera puts the 24P in a 60i (normal HDV) timeline it "copies" some of the frame to make 30 instead of 24. And this process of "making frames" is called as pulldown or telecine.

Hope I could explain :hv20-smilie51:

cheers :hv20-smilie70:

[RogerB1]

Thank you so much hizbiz. I very much appreciate your help. (fog is starting to clear) :)

[mik]

not exactly.

pulldown means "slowing down" the footage from 24p to 23.976. then those 23.976 need to be converted to 29.97/60i (or from 25p to 50i for PAL) in order to match the television standard so some of them are duplicated (telecine).

basically the 24 is lost somwhere between 29.97 frames and an inverse telecine method needs to be applied after capturing to get rid of the additional inserted frames. some video cameras mark with flags the added frames so it's easier to remove them, but hv20 doesn't.

i'm not aware of a consumer camcorder that records progressive video without telecine.