5D Mark IV high frame rate footage in Premiere

Question

Hi. I have a sequence in Premiere Pro CC 2017 that I have set to 23.9760 fps because that's what the majority of my footage was shot at. I'm also working with footage at other frame rates from 60fps 120fps and 240fps.

CANON FOOTAGE:

When you import 5D footage shot at 60fps it remains 60fps until you interpret it to whatever you want it to be. In my case it's 23.9760.

When you import 5D footage shot at 120fps it imports it at 30fps and looks nice and smooth in slow motion. My question is, do I drop it into the sequence at 30fps or interpret it to 23.9760 first. I know this will make it appear slightly slower which is fine, but do you know if it will affect the quality or smoothness of the slow motion?

I've tried both and they both look pretty similar in smoothness but I'm worried that changing it to 23.9760 might actually be making the motion slightly less smooth.

iPHONE 7 FOOTAGE:

The standard footage is 30fps and when dropping it into a 23.9760 sequence in Premiere you have to keep it at 30fps because if you interpret it to match the sequence it slows it down to an unnatural speed.

But when you import footage shot at 240fps it still shows it as being 240fps. So my question is, to slow it down to its smoothest speed, do I go to 30fps because that seems to be the native frame rate for iPhone footage, or do I interpret to 23.9760 to match my sequence settings?

I hope that all made sense... Any advice will be greatly appreciated.

Thank you!

Dustin

DigitalSpatula · Accepted Answer

Stuttering is only a problem when you are making 30fops footage go onto a 24fps timeline.

Reinterpreting for slowmotion doesn't introduce any problems. It's just playing back the frames at a 1:1 ratio.

Thx,

Steve

DigitalSpatula · Answer

Hey DustinGreat questions. I shoot using your same issues as well.I've found that trying to put footage that's interpreted as 30fps into a 23.976 sequence, it gets choppy in a weird way. I would reinterpret the footage to be the same as your sequence framerate. It will be slightly less smooth but without the framerate conversion issues (pull down). If you really need to put 30fps footage on a 23.976 timeline, then you need a good plugin to create that conversion. Something like Twixtor pro does a great job of fps conversion from 30 to 24.Some cameras will shoot at high framerates and record it back to the card at 29.97 or 23.976. Some footage stays at the high framerate (like 240fps iphone footage). There would be no difference between the camera shoot at high fps and laying down to the card at regular framerate or you interpreting it to your desired frame rate.Hope this helps,Steve

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