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Underwater DSLR 30p footage to be conformed to 23.976 - any other transcode thoughts ?

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Rosie Walunas
Underwater DSLR 30p footage to be conformed to 23.976 - any other transcode thoughts ?
on Nov 21, 2012 at 2:38:56 am

We have some DSLR footage that was shot at 30p and will be transcoding down to 23.976 FPS.

Editing ProRes 422 1920x1080 @ 23.976 FPS.

My understanding is that because we are progressive there doesn't need to be any special treatment for this footage other than making it ProRes and changing the frame rate, right?

Obviously we want the best transcode. Any thoughts on process or buttons to check? Does anyone think it matters if this is done in Compressor or MPEG Streamclip? I've noticed Compressor has a harder time loading and processing DSLR footage in general.

Thoughts are appreciated.

Thanks!


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Michael Gissing
Re: Underwater DSLR 30p footage to be conformed to 23.976 - any other transcode thoughts ?
on Nov 21, 2012 at 2:48:00 am

One method is to use Cinema Tools to change the frame rate. This means the 29.97 is slowed down to play at 23.98 by rewriting the frame rate in the file data. There is no transcoding and it is destructive so you might want to change a copy of the files. Perhaps try a few files and see if that works for you.

If slowing the footage down won't work then you are looking at frame rate conversion in Compressor.


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John Heagy
Re: Underwater DSLR 30p footage to be conformed to 23.976 - any other transcode thoughts ?
on Nov 21, 2012 at 2:56:44 am

30p to 24p is really worse case as far as frame rate conversion goes. You will be dropping significant chunks of time and it will appear "jumpy". Underwater footage may lend itself to optical flow frame creation which is enabled by the highest quality frame rate setting in Compressor.

If you can doing a conform from 30 to 24 will be cleanest but will slow the footage.

The reason you need 24p is all the other footage is 24p?

John


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