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Rewrap ProRes from 24fps to 25fps

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16 Mar 2014 13:59 #42745 by FCPGuy

Tom Wolsky wrote: I don't know why it would, but I suspect it's dropping frames.

So how would you conform 24fps footage to 25fps?
I'em guessing there is no way in Compressor!

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16 Mar 2014 14:55 #42747 by Tom Wolsky
The conform function is in the video editing application. It's probably in Premiere.

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16 Mar 2014 15:11 #42749 by FCPGuy
Okay but the original purpose is to deliver the footage in 25fps.
Or are you hinting I should drop each clip on a timeline in FCPX and use Rate Conform Floor and reexport the clip out of FCPX?
I'em feeling I can't find the right answer with Apples FCPX and Compressor!

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16 Mar 2014 17:15 #42753 by BenB
Create a Project at 25fps, edit, deliver, it'll look fine. No one will notice 24 to 25 conversion.

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16 Mar 2014 17:20 #42754 by FCPGuy
I need to deliver the files in 25fps to the editor.

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16 Mar 2014 17:31 #42756 by BenB
Then use Compressor to batch convert the 24 to 25. It does a great job at it. I don't understand how this got so confusing.

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16 Mar 2014 17:34 #42758 by FCPGuy
Easy when converting it creates Ghosting in moving objects in the frame or the compete frame when the camera is in motion.

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16 Mar 2014 17:51 #42761 by Scrubelicious
you could also give this a try in Compressor:
Set your Frame Rate to 25 fps in the Video inspector and then in the General set the "Set duration to: So source frames play at 25 fps". This will slow down the clip to 96.00%

Let us know if you get any ghosting.
I will give it a try myself tomorrow.

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16 Mar 2014 18:01 #42763 by Seamusvfx
You understand though that you are in a situation where you have to make a compromise? 24 doesn't magically turn into 25 fps. The extra frame has got to come from somewhere.

What you can do in compressor is turn on motion compensation, which will use optical flow to 'make up' a new frame. It's not perfect but it will avoid most ghosting. The other option is simply to run the 24 at 25 which will cause a slight speed up, but no ghosting or other artefacts. This is the way the bbc recommend conforming 24 to 25.

I know it's not really the problem, but can't you just call the editor or the client and explain that's it's going to be a lot easier to edit mixed frame rate and conform after? Even of you've stuffed it up and recorded 24 accidentally, they'll appreciate the honesty rather than bodged rushes.

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17 Mar 2014 03:19 #42794 by haysoos123
Either do it in compressor as Scrubilcious says, or just get a hold of Cinema Tools from Final Cut Studio, which can do a batch conform easily. No transcoding. Normally I wouldn't suggest this, but since FCP Studio is EOL, just get a bootleg if you don't have it. But judging by your username, surely you have an old version of Final Cut Studio around, no?

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17 Mar 2014 03:26 #42795 by BenB

FCPGuy wrote: Easy when converting it creates Ghosting in moving objects in the frame or the compete frame when the camera is in motion.


Not in my conversions, never saw any ghosting, it always worked just fine. But, not everyone gets the same results, or uses the same settings.

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17 Mar 2014 11:27 #42807 by FCPGuy

haysoos123 wrote: Either do it in compressor as Scrubilcious says, or just get a hold of Cinema Tools from Final Cut Studio, which can do a batch conform easily. No transcoding. Normally I wouldn't suggest this, but since FCP Studio is EOL, just get a bootleg if you don't have it. But judging by your username, surely you have an old version of Final Cut Studio around, no?


Yes I guess I will dig out the old discs to get Cinema Tools back on.

BenB the only way to receive a result with out ghosting as mentioned by haysoos123 and scrubelicious.

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