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Better to conform 60FPS to 24fps?
Which provides a better slow motion in FCPX:
The clip was shot at 60fps.
1. Edit in a 24p timeline and use “conform speed”
2. Edit in a 60p timeline and simply slow down the clip.
Thanks
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37 Replies
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Option 1
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Isn’t it the same thing? I thought conform just does the math for you and applies a 40% speed effect.
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[Bret Williams] “Isn’t it the same thing?”
Putting 59.94 footage in a 59.94 timeline will yield no speed change when hitting conform. If you slow it down further, you’ll be making up new information.
Putting 59.94 material in a 23.976 timeline and conforming will play the material back more slowly using the actual frames that were shot instead of making them up. It’s true slow motion instead vs a processed speed change.
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If you still have Cinema Tools available, it’s better to conform to 23.98 in CT. Doing it in FCP X requires rendering and the visual quality is not quite as good as using CT. Using CT simply changes the native playback speed. Of course, if CT is not installed, then retimed/conformed in FCP X is your best option.
– Oliver
Oliver Peters Post Production Services, LLC
Orlando, FL
http://www.oliverpeters.com -
[Oliver Peters] “If you still have Cinema Tools available, it’s better to conform to 23.98 in CT. Doing it in FCP X requires rendering and the visual quality is not quite as good as using CT. Using CT simply changes the native playback speed. Of course, if CT is not installed, then retimed/conformed in FCP X is your best option.”
Putting 59.94 footage in a 23.976 timeline and hitting conform is essentially the same as running the footage through CT.
You are playing 59.94 back at 23.976.
Jeremy
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[Jeremy Garchow] “Putting 59.94 footage in a 23.976 timeline and hitting conform is essentially the same as running the footage through CT”
No it isn’t. Using CT doesn’t require a render. Doing it inside FCP X does, unless that changes recently.
– Oliver
Oliver Peters Post Production Services, LLC
Orlando, FL
http://www.oliverpeters.com -
PS: Also, you can batch the clips in CT and you can’t with FCP X.
– Oliver
Oliver Peters Post Production Services, LLC
Orlando, FL
http://www.oliverpeters.com -
I guess I always found CT to be an exploit due to an fcp shortcoming.
I have always liked how you could simply interpret footage in Ae and now Pr.
With fcpx, I don’t have to duplicate or destroy the original media and if recorded the audio is in tact to be used if needed.
I find it more flexible and less messy.
Almost every clip needs a render by the time I’m done with filters, reposition, differing codecs, et al.
An unprocessed speed conform of this sort is no different for me in fcpx.
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[Jeremy Garchow] “With fcpx, I don’t have to duplicate or destroy the original media and if recorded the audio is in tact to be used if needed.”
But CT is a non-destructive process. You are simply changing the header info that tells a player what speed to play the file. If a production’s timebase is 23.98 and the footage was shot at 30 or 60, it was only intended to be used as slomo, unless this was simply done as a mistake. Obviously communication with the DP is important.
Most pro cameras that shoot offspeed come into an NLE and play at the correct timebase. At least that’s true of Sony, Panasonic, Canon C300 and Alexas. They are doing the same thing that the Varicam has done and that’s the same process you are applying by using Cinema Tools.
For me it’s a workflow that’s mainly applicable to HDSLR and GoPro footage. I convert that media anyway to ProRes. Then I separate the offspeed files and batch conform. I can always conform a file back to the original speed or go back to the untouched camera file if I had to.
– Oliver
Oliver Peters Post Production Services, LLC
Orlando, FL
http://www.oliverpeters.com -
Last time I checked/tried conform in CT was a one way process. For whatever reason you couldn’t confirm it again. That’s why is always been insisted that you first duplicate the original.
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