Why Use 24P Advanced Instead of 24P Standard

If you shoot 24P Standard and un-do the pulldown to edit at 24P, you are going to get a lower-quality image.

The reason is this: a DV camera like the DVX100 does not compress fields individually, it compresses an entire frame as a unit. When you undo a standard 3:2 pulldown the third "film" frame (frame "C" in the diagram below) is reconstructed from two fields taken from two different video frames. Due to compression losses in the camera, information tends to leak from one field to another:

Graphic courtesy Adam Wilt http://www.adamwilt.com/24p

So in your reconstructed "C" frame, light has leaked into it from the frame behind ("BC") and the frame ahead ("CD"). It's going to have distortions, especially when there is movement in the shot. This holds true even if you are editing with an uncompressed editing system.

In the 24P Advanced mode, this situation does not exist:

Graphic courtesy Adam Wilt http://www.adamwilt.com/24p

Frame "C" is compressed separately from other frames and is free of distortion.

For this reason, 24P Standard is not an acceptable alternative to 24P Advanced if the intent is to edit at 24P, author a 24P DVD, or transfer to film.