shooting at higher frame rates and transfom it in 24p

M

Marco.L

Well-known member
i'm reading lots of threads about judder , and i found that problem in my footage.
so , i need to read more to learn how to shot nice footage in 24p , but i have a question.

i saw some skateboarding , snowboarding , car chases , people running , in 24p and it dont have judder... so here goes my question ,

did they shot in higher framerates like 30 or 60 and them put it in 24p in post prodction?

how can i do this on FCP?

thank you all.
 
From what I understand by reading Barry's Book, converting a higher frame rate video to 24 does not solve the problem of strobing at all.

The cause of strobing has to do with the amount of frames that are being presented per second. The thing that causes strobing is during something like a pan, where there is too much change from one frame to the next for 24fps to show smoothly.

The reason that it might have not seemed like there was much going on in the videos you saw where there was a lot of action is probably because the camera was panning quickly, but following the skateboarder or runner, etc., which made them steady in the shot.

My guess is if you look at the background of the shot, there will still be the strobing, but because you are focusing on the person, it is less noticeable.

But no, from what I have read, in 24fps, no matter if it was converted or not, there is no way to avoid strobing except by simply panning slower.

Sorry if that was wrong
 
Shooting at a higher frame rate and converting in post using cinema tools means slowing down the QT footage by a set %. How ever recorded the audio has to be re rendered to fit the new length of the clip. This is known to add jitteriness to the clips so I wouldn't necessarily recommend doing this if asked.

Using DVCPROHD frame rate converter though means you will be applying similar pulldowns to those used in camera.

Using MXFX to convert means that a lossless conversion will be applied to the MXF and audio files.

Neither will make a difference as far as the judder goes. So over and under crank your shots with a PN format if you want the effect, not to reduce judder.
 
Why would converting the frame rate result in a temporal slowdown requiring a change the length of the audio? That doesn't sound a like a particularly effective conversion to me. The length of the clip should be unchanged.

But Ryan is correct; converting a higher frame rate does nothing to combat the strobe.
 
In order to go from 25 to 24 FPS it is possible to ingest the footage as 25P, then use Cinema Tools to conform the clips to 23.98. The clips will play back 4% slower than originally, this will cause the sample rate of the audio to be wrong. I used the wrong and or miss-leading terminology at this point of the processes description previously. Meaning it will need to be rendered back to 48KHz. True this is not the frame rates originally asked about but a similar process and yes your rite it is not a very effective one at that. I there for suggested the other methods which I found to be quite good.
 
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