3dRender.com : Glossary : 3:2 Pull-Down

3:2 Pull-Down - An approach to recording NTSC video (30 Frames per Second) from film footage shot at 24 FPS.  Every 5 video frames comes from 4 frames of the original film, by alternately recording 2 video fields from one film frame, then 3 video fields from the next film frame, as shown in this diagram:

Video Frame 1 2 3 4 5
Video Field a b a b a b a b a b
Film Frame 1 2 3 4

Related Terms: Fields, Interlaced Video.

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