Advantage of 1080p vs 1080i for 24fps movies

[AV_Integrated]

1080i/50 vs. 1080p/50 should produce ZERO difference on most displays. Obviously, this is only in PAL regions and does not hold exactly true for NTSC regions which operate at 60hz instead of 50hz. I believe in PAL land, one extra frame out of every 24 frames is repeated to make 25 frames, then every frame is shown twice. It may be possible that one frame is shown 3 times and the next frame is shown 3 times to deal with 24fps, but I'm not as sure about PAL 24fps -> 25fps as I am with NTSC 2:3 conversion.

Now, in NTSC land, 60 frames does not properly equate with 24fps. So, the real creme-de-la-creme is a player that outputs at 1080p/24. A true 24 frames per second! Then instead of using a projector that can only handle 1080p/60, you use a setup that allows for 1080p/24 input and you watch the movie at a true 24hz or multiple thereof.

The problem with anything not matching up perfectly (like 50hz in PAL regions) is that you have some mild to serious artifacting that goes on due to the frame rates and the need for frames to be repeated at inconsistent variables. This may slightly stagger motion and is called judder.

Either way - 1080i/60 or 1080p/60 with a display that can operate at 24hz (or a multiple thereof) could potentially recognize the 24fps and display it 100% accurately. The key with both is that all frames are fully presented.