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Chroma Key testing

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Darren McFarlan
Chroma Key testing
on Oct 14, 2009 at 7:01:13 pm

I am running some tests today, and wondered about some setting.
From our XDCAM I am running HDSDI out to our Kona LHe card.
In Final Cut, I want to set it up to record at 30p, but I don't see that option.
I can input by: AJA Kona 1080psf 23.98 Apple ProRes 422
or
AJA Kona 1080i 29.97 Apple ProRez 422.

What setting should I use for Chroma Key.
Would running straight from the camera into the Kona card produce a better image than recording 1080 30p, onto the blueray in the camera?
Also, some of the footage for backgrounds has already be shoot at 1080i.
Is this going to look strange mixing frame rates between the key footage, and background footage?


Darren


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Jeremy Garchow
Re: Chroma Key testing
on Oct 14, 2009 at 7:23:09 pm

[Darren McFarlan] "What setting should I use for Chroma Key. "

You need to use to 1080i setting for 30psf. Once you import the clips in to FCP, then you chnage the field dom setting to none and edit in a none timeline.

[Darren McFarlan] "Would running straight from the camera into the Kona card produce a better image than recording 1080 30p, onto the blueray in the camera? "

Yes. Definitely.

[Darren McFarlan] "Also, some of the footage for backgrounds has already be shoot at 1080i.
Is this going to look strange mixing frame rates between the key footage, and background footage? "


It depends. What are the BGs? Are they moving, are they in focus? Yes, they will look different if there's a lot of movement.

Jeremy


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