This post should probably be in the FCP forum, but I know most of you guys use FCP so I thought I would start here. I have a project that was shot on the EX where the client decided to switch to 1080P 30 after we had shot some footage at 1080P 24. I know I know, dumb move but here I am. Most of the footage is 30, what is going to be my best bet to get these two formats to play nicely. Thanks for any help.
Sadly 30p and 24p do not mix well at all- which is why I'm a huge non-fan of 30p. You have two basic options- fit the 24p onto a 30p timeline or fit the 30p onto a 24p timeline. Some pros and cons-
24p on a 30p timeline Pros
Visually will look better- 24p just needs to have it's pulldown added and will fit on a 30p timeline well.
Much easier, less rendering required.
Lose native 24p edit
Cannot make native 24p DVD or go out to film without complex conversions down the road
20% more render and storage time required for effects due to more frames per second
30p on a 24p timeline Pros
Preserve native 24p footage and timeline
Can make a 24p DVD and/or output easily to film Cons
30p is extremely difficult to convert to 24p without artifacting and requires considerable render power to make into 24p.
Bottom line is there is no easy solution here and I point all this out in the hopes that someone else reading this will avoid the situation entirely by sticking with one or the other for their entire production. Sorry. :)
I actually do most of my shooting in 30p (I think Doug Jensen mentions the same on his Vortex Media EX training DVD). Personally I do not like the temporal resolution of 24p. That's just me but it's my aesthetic. I fully agree that 30p is the worst of all "portable" formats though so you really have to know what you've locked yourself into.
FWIW 24p is the "universal" since it can easily be converted to 25(speed change) or 29.97(pull down) as well as used as is.