Specifications for HD DVD

Originally Posted by BNCR

You are correct that they are basically frame doubling 60hz to 120hz.

From Sony...Same thing on the new Samsungs that say they do 120hz.

"Motionflow™ 120 Hz with Full HD high frame rate capability

Taking motion performance to the next level requires innovation and expertise. Enter Sony's Motionflow™ High Frame Rate technology. Motionflow™ detects the incoming video signal and applies the appropriate processing for optimum motion reproduction. Taking full advantage of film sourced 24fps encoded content available on DVD and Blu-ray Disc, Motionflow™ eliminates the need for 3:2 pulldown and delivers smooth, judder free video, faithfully preserving the integrity of the original film. When 60fps content is detected, Motionflow™ doubles the amount of frames and uses real-time calculation to create a new level of natural motion reproduction. You'll experience movies and sports with a greater sense of realism than ever before."

Basically this is all a bunch of tricks. Remember that 24 FPS is the standard framerate that is used on all film originated movies.

IMHO all the players should output 24p (or24fps) natively and all displays should be able to display the film in 24p.

Most modern film projectors use a shutter that shows each frame twice, basically doing mechanical doubling while the frame of film is stopped in the projector gate.

In camera shutter angle is often variable to produce a more jittery effect through a shorter exposure. "Saving Private Ryan" beach landing scene is a great example of narrow shutter angle. I wonder what that looks like at "120hz"? LOL

"Jitter" and grain are part of film. You are only sampling the visual world 24 times per second.

Cheers.

Originally Posted by BNCR

Which displays do a blank field versus doubling one?

So do you feel it is field/line doubling like I do?

BTW 5:5 is field/line quintupling then. LOL