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Ultra Key or Export Issue?

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Jeremy Tey
Ultra Key or Export Issue?
on Mar 29, 2019 at 5:50:05 am

Basically i've ultra keyed this footage, but in my preview on Premiere it looks fine, but after exporting - I get these artifacts around the people head in this video.

How could I solve this issue? I'm rendering with the ProRes HQ preset on Premiere.

https://imgur.com/a/qpIEVWh


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Jon Doughtie
Re: Ultra Key or Export Issue?
on Mar 29, 2019 at 10:52:09 am

To be honest, I consider Ultra Key in the timeline a convenience. . .

But if I really want sweet green screen keys, I still go to After Effects and Keylight. Every time. I invariably get better results.

System:
Dell Precision T7600 (x2)
Win 7 64-bit
32GB RAM
Adobe CC 2017.1 (as of 8/2017)
256GB SSD system drive
4 internal media drives RAID 5
Typically cutting short form from UHD MP4, HD MP4, and HD P2 MXF.


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Jeremy Tey
Re: Ultra Key or Export Issue?
on Mar 31, 2019 at 12:25:28 am

Will consider using After Effects next time, thanks!


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Todd Perchert
Re: Ultra Key or Export Issue?
on Mar 29, 2019 at 2:44:29 pm

Do you see any of that when you look at the matte? I wondering if the key is still off some. What codec and bit rate is your original footage? That's more important than what you are rendering to. H264 can be more difficult to key than ProRes.

I agree with Jon, I do all my keying in AE with Keylight. Much more control and you have good matte choker options in AE.
Ultra is good if that's all you have. But I've always had less than great keys with it when I have used it.


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Dave LaRonde
Re: Ultra Key or Export Issue?
on Mar 29, 2019 at 4:27:39 pm

...and I agree with the other two gents. Using After Effects, you can create a finished chroma key shot including the background.

And if the source footage for the key is H.264, I wouldn't expect miracles no matter what keyer you use.

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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Jeremy Tey
Re: Ultra Key or Export Issue?
on Mar 31, 2019 at 12:26:54 am

Ah alright, thanks so much!


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Jeremy Tey
Re: Ultra Key or Export Issue?
on Mar 31, 2019 at 12:26:35 am

Actually I don't. It's fully black, and I've masked out unnecessary corners and sides. The codec I'm pretty sure is H264, so that might be an issue. I'll consider using After Effects in the future!


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