Advantages and differences between 24p and 30p

gzsnow906

Active member
I'm confused as to the advantage between shooting 24p and 30p. I assumed you would want to use 30p for shooting action because it is more frames per second but I am told that this is incorrect and fail to determine why. It just isn't making sense to me. Also, does 30p edit normally on a 29.97 timeline both by itself and when mixed with 24p and 60i??? Thanks for the help, new to the concepts of progressive scanning world and have done lots of reading but still have lingering questions. Thank you!
 
Your instincts are correct; 30P will be smoother and will edit on a 29.97 timeline.

With that said, what's the point? If you want smooth action, 60i is way smoother than 30P. If you want a filmlike look, 24P looks much more filmlike than 30P.

30P is kind of a weird hybrid. It's there if you want it, but keep in mind that if you shoot 30P you could never (successfully) transfer that to film or to PAL television, whereas both are possible with 24P.
 
I'm not good at Frames...Isn't 60i just 30p as it deletes the repeated frame anyway.

60i is 30fps but interlaced. 2 sets of fields. 30x2 = 60. how does the 24p perform with action?? or should i stick to 60i for action videography?
 
Show some love for 30p.

For live events I use it all the time. It adds a polish that 60i doesn't have, but where 24p might be inappropriate.
 
using 24p and a faster shutter speed is appropriate for action correct? cuz i head some people saying they were filming snowboarding with a 1/60 shutter and it seemed like it would be much too slow for action and if u wanted to slowmo anything..
 
60i is 30fps but interlaced. 2 sets of fields. 30x2 = 60.

It's not 30 fps.

It's 60 fields per second.

This is significant because it represents 60 separate moments in time, not 30.

30p is 30 fps. It's 30 moments in time. Half the temporal resolution; half the time samples.
 
you cant slo-mo 24p. it just doesnt work. not with SD anyway. but i usually shoot at a 1/48th or 1/60th shutter with 24pA and it looks poo pooing fabulous.
 
It's not 30 fps.

It's 60 fields per second.

This is significant because it represents 60 separate moments in time, not 30.

30p is 30 fps. It's 30 moments in time. Half the temporal resolution; half the time samples.

ahhh interesting. thank you for the correction.
 
24p in final cut

24p in final cut

when shooting in 24p to tape with the dvx what should the timeline settings be in final cut? do you still edit on a 29.97 time line?
 
You can , but when you use a 23.976 timeline it removes pulldown.
I have edited 24p on a 29.97 timeline & the results are still very good
 
i still dont really understand why 30p doesnt work well for action. everyone keeps saying shoot 24p or 60i for action. and i dont get whyyyyy.
 
24P = the film look.

60i = the "live" look.

30P = sort of a hybrid. It's stroby like 24P, but not quite as stroby. It's a little bit smoother, but nothing like 60i or 60P.

Basically, use it if you want. But if you want smooth fluid motion, 60i/60P will be much smoother than 30P will.
 
Barry ---

I'm producing a pilot for a scuba diving/travel show in SD although the series --- if picked up --- will be in HD. We're shooting with my DVX100a in squeeze mode at 30p for the above water shots and with a Sony PD100a at 30i for the underwater stuff. We'll be editing in FCP or Premiere Pro.

I hate to sound like a heretic on this board, but I really don't care for the 24p film look for this type of programing. I (and the cable channel we're doing this for) prefer the "live" look of 60i. Nonetheless, I am interested in possibly purchasing an HPX500 and a pair of HVX200a's for the series because of the tapeless workflow. My question is, how do these cameras look in 1080i compared with, say, the Canon XH-A1 and the Canon XL-H1a? The ability to shoot at various frame rates and shoot at 24p is not important as we'll always shoot at 60i. The channel is cool with either camera package.

Thanks in advance.
 
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