Apple M8728Z/A User Manual - Page 218
Working with 2:3:3:2 Pull-Down, instead of working with 3:2 pull-down
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Working with 2:3:3:2 Pull-Down Some camcorders, such as the Panasonic AG-DVX100, are designed to shoot in progressive mode at 24 fps (actually 23.98 fps) and then record the video to a tape as a 60-field interlaced signal by applying 2:3:3:2 pull-down to it. The 2:3:3:2 pull-down is similar in concept to 3:2 pull-down but has a different pattern of field repetition, as illustrated below. ABCD AAB B B C C CDD Field Field Field Field Field Field Field Field Field Field 1 2 1 2 1 2 1 2 1 2 2:3:3:2 Pull-Down Before (23.98 fps) A B CDA BC DAB C DAB C DA BC DAB CD A A B B B C C C DD A A B B B C C C DD A A B B B C C CDD A A B B B C C CD D A A B B B C C C DD A A B B B C C C DD After (29.97 fps) One second There are some advantages to shooting with, and then removing, 2:3:3:2 pull-down instead of working with 3:2 pull-down: • Final Cut Pro can easily remove the 2:3:3:2 pull-down while you are capturing, so that you can edit 24 fps (actually 23.98 fps) progressive video. 218 Chapter 13 Working with 24p Video and 24 fps EDLs