Rendering out at 29.97 frames but project is in 24 frames?

[John Rofrano]

It will add pulldown frames to make up the frame rate difference. This shouldn’t affect the video much since a standard NTSC DVD player would add the same pulldown in order to view it on an NTSC TV anyway since all NTSC TV’s only support 29.97. You have been watching 24p movies on TV like this your whole life. (unless of course you are in a PAL country in which case you’ve been watching 24p at 25fps)

~jr

http://www.johnrofrano.com
http://www.vasst.com

[Terry Esslinger]

Obviously I am not into 24p but if you can’t watch 24p whats the use in doing it. What basic am I missing here?

[John Rofrano]

> Obviously I am not into 24p but if you can’t watch 24p whats the use in doing it.

Well you can watch 24p. Just not on an analog TV.

> What basic am I missing here?

Oh it definitely has a different cadence than regular 29.97. The pulldown frames are not “real” captured frames. They are duplicates of the existing 24 frames. Pulldown is sometimes refered to as 2:3 pulldown because it duplicates the 2nd frame, then the 3rd frame after that, then the 2nd frame after that, etc. to bring frames 24 up to 30. This process maintains the slower cadence of the original 24p so it does give you a different feel.

Also don’t forget that normal DV and HDV is interlaced, meaning there are 60 fields interlaced together to create the 30 frames that you see. This is commonly referred to as 60i. Capturing motion at 60 interlaced fields per second, and capturing motion at 24 progressive frames per second, gives you different motion. The 24p is discrete samples while the 60i is two samples in time displayed together at 30 fps. Creating 60i from 24p will never look the same as captured 60i because 24p has only 1/2 of the samples of motion.

~jr

http://www.johnrofrano.com
http://www.vasst.com