720p 24p is actually 60p? crud.

plywoodman

plywoodman

New member
I just wrapped production on my first (micro-budget) feature film. We shot on the HVX using an FS-100 to capture our 720p 24p footage. We decided against 1080i
to avoid too many post production headaches, but now I've got one anyway.

Because the FS-100 does not (or at least did not while we were in production) support native frame rates, all our footage is technically 60p (whether we were shooting at 60p or 24p). In other words, I'm forced to edit in a 59.94 based timeline. Not only does that seem like a big waste of processing power, but when I tested exporting in true 24p, FCP seemed to not always grab the right frames, and some of the shots looked almost like 12p.

So I guess the question is: How and when do I correct this problem? Do I somehow convert all my footage now? Or wait until the final stages, depending on what the final medium is?

Thanks
 
One option is to lay your footage off to tape and re-digitize at the desired timebase.
720 p is actually 59.94 , just as the Varicam shoots in that mode. The frames are all there but when you view the 24 fps, the frames are discarded (not shown). The extra frames allow you to pull diffrent speeds from your original footage if desired. Have you noticed a difference in CPU performance in 59.94 ? It shouldn't be much different than 23.98.
 
I haven't imported HVX footage into FCP since the 5.1.2 release, so don't know the new menu that well, but isn't there still some kind of "remove duplicate frames" option when you load the footage in? I would think you would still be able to bring the materials in at 23.98 despite having to shoot at 24p instead of 24pN. So you might need to reload your footage. I would certainly correct it now, if possible, as doing fixes later might create even more bothersome scenarios to work around. BenB would be a good guy to ask on this one as he's put the HVX and FCP through the paces.

cheers.
 
Thanks,
I haven't upgraded to 5.1.2 yet, so if that has the option of removing duplicate frames, upon importing the P2, that sounds perfect. I'll check it out.
 
You really have to have at least 5.1.2, go all the way to 5.1.4 which is the latest. There is a place you can apply the pulldown removal and get your frame rate correctly.

If you upgrade the FS-100 to the 3.0 firmware, you can do Native recording modes with it.
 
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