24p Slow Motion

REHov520

REHov520

Well-known member
Hi,

I'm doing a project in 24p normal. I'm editing it in a 29.97 timeline. I'm producing it in such a way that I'd like to be able to slow clips down, but I can't plan ahead which clips exactly these are going to be. As a result, I want to be able to shoot all my footage in 24p normal mode and edit on a 29.97 timeline, and then selectively slow some of this footage down. However, when I do this, Final Cut Pro causes the clip to go up and down in speed instead of remaining constant. Is there a way to fix this? To make the speed of certain clips slow motion but at a constant speed, but leaving the rest of the footage as normal, with only 24p normal footage in a 29.97 timeline? Thanks for any possible help.
 
I would shoot 60i if i wasn't sure what to slo mo, and use DVFilm maker to convert the whole deal.... Probably the the most simple solution.
 
When you say "to convert the whole deal", does that mean convert the entire project from 60i to 24p? (after it's completely edited, slow motion and everything)
 
I would repost this in the FCP under software. As a premiere user I simply clip the section I want to slow down and then apply a speed change.
 
Perhaps you could shoot the entirety of the program in 24p except for the slo-mo parts...shoot them at 60i capture to 24p timeline and then do a slowdown to 40% in your NLE as Barry points out in his book (great book, BTW) This will give you smooth slo mo although it'll be a touch soft.

If I got any of that incorrect somebody pipe up, please. I don't have Barry's book handy while writing this entry.

I hope this is helpful.


ian
 
What do you mean "Final Cut Pro causes the clip to go up and down in speed instead of remaining constant"???

As "ncje" said, just clip the section you want to slow down, and apply a speed change (apple "J").

It won't look real great slowed down because it's 24P, but it will work just fine... just depends on how much you need to slow it down. Try it with frame blending on, and also try it with it off, you may find that with it off, the choppy look could add some charactor to the shot. Just an idea.

-brown

P.S. as Ian stated (correctly), the ideal way would be to shoot the slow mo parts at 60i... but you said you weren't sure which clips are going to be slowed down. May be worth putting some time into pre-production to clarify which clips you wan't to slow...
 
What I mean is that when I apply a 20% speed change to a 24p clip in a 29.97 timeline, the motion of figures in frame appear to speed up then slow down over and over again. I THINK this is because when you import 24p to 29.97 timeline, it adds redundant frames. When you slow the clip down enough, these redundant frames become more noticable. Is this correct?

I think I solved my problem by shooting 24p advanced and editing in a 24p timeline. However, I'd still like to know if I'm correct on my prognosis as to why the problem occured earlier, if anyone knows. Thanks guys.
 
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