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Editing in Ultra HD and re-linking HD version of the footage.

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Devin Crane
Editing in Ultra HD and re-linking HD version of the footage.
on Aug 29, 2017 at 3:20:46 pm

I am looking to capture an HD SDR feed and a Ultra HD HDR feed from 3 separate studio cameras simultaneously (all with same TC source) and then edit in FCPX. Is there a way to edit in Ultra HD HDR then after I am done editing the program re-link the HD footage for an HD version of the program? I understand that I could export the Ultra HDR footage to HD but to my understanding there are some issues with the HDR to SDR conversion or is that incorrect.



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Jeff Kirkland
Re: Editing in Ultra HD and re-linking HD version of the footage.
on Aug 29, 2017 at 8:30:33 pm
Last Edited By Jeff Kirkland on Aug 29, 2017 at 9:03:49 pm

Other than switching from its own internally generated proxies to original media, FCPX can only re-link to clips that are an exact match (resolution, bit depth, audio channels, etc) for clips it thinks are missing.

I haven't had the opportunity to work with outputting HDR footage yet so I can't speak to any issues there may be with colour space conversion if you're letting FCPX convert from HDR to SDR, however I haven't heard of any issues either.

What are the specific problems you've heard about?

To be honest, if I were in that situation, I think I'd edit in FCPX and then move the project to Resolve to do the final grade and output . Even if you captured both versions at the same time and relinked to the alternate media in Resolve, I feel I'd still want to do a specific grade for each colour space rather than just a generic conversion.

----
Jeff Kirkland | Video Producer & Cinematographer
Hobart, Tasmania | Twitter: @jeffkirkland


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Noah Kadner
Re: Editing in Ultra HD and re-linking HD version of the footage.
on Aug 29, 2017 at 9:42:31 pm

Hard to say without knowing more about the specific workflow and how the HD was created but I can't imagine a realistic scenario where an HD downconvert from a 4K version will look inferior to a relink to an HD original. The 4K derived version should always have higher apparent visual quality if all is correctly exported.

Noah

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Robin S. Kurz
Re: Editing in Ultra HD and re-linking HD version of the footage.
on Sep 1, 2017 at 3:19:14 pm

[Noah Kadner] "but I can't imagine a realistic scenario where an HD downconvert from a 4K version will look inferior to a relink to an HD original. The 4K derived version should always have higher apparent visual quality if all is correctly exported."

Agreed. What are these alleged issues you're talking about?

- RK

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