Re: [QLab] keying green screen camera

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Andy Dolph

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Dec 25, 2020, 5:21:11 PM12/25/20
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If you need to do it in the computer I think you can do it via OBS and then feed that into Qlab as a virtual camera.

But my first choice would be to run the camera into a Blackmagic ATEM Mini which has a great keyer, then USB into the Mac 

On Dec 25, 2020, at 5:11 PM, fg <friendl...@gmail.com> wrote:

Hi, is there a reliable way to key live camera footage?

I have a green screen background and wondering if it's possible to swap it out?

Thanks!

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utku kara

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Dec 26, 2020, 8:41:35 AM12/26/20
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Hello ı used a quartz composer effect at QLab camera cue, it’s not bad. you can check it link below. 


https://github.com/grifu/Q-Chromakey-Syphon#q-chromakey-syphon

Best 



fg <friendl...@gmail.com> şunları yazdı (26 Ara 2020 01:11):

Hi, is there a reliable way to key live camera footage?

I have a green screen background and wondering if it's possible to swap it out?

Thanks!

--
Contact support anytime: sup...@figure53.com
Follow QLab on Twitter: https://twitter.com/QLabApp
User Group Code of Conduct: https://qlab.app/code-of-conduct/
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fg

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Dec 26, 2020, 9:07:23 AM12/26/20
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Hi all, thanks for the replies to this, 

I deleted the query, since I discovered this thread https://groups.google.com/g/qlab/c/q5o1FTwgp0M/m/iLDJvkxeDAAJ

I'm using Chroma Key Live by which seems to work pretty well

Thanks

fg

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Feb 5, 2021, 11:15:04 AM2/5/21
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FYI Chroma Key Live no longer works on Big Sur, so I tried quartz composer. It's fantastic, many thanks

On Saturday, 26 December 2020 at 13:41:35 UTC u.utk...@gmail.com wrote:

micpool

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Feb 5, 2021, 11:18:11 AM2/5/21
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Although, how long Quartz Composer will be a viable option remains to be seen.!

fg

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Feb 6, 2021, 9:44:49 AM2/6/21
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Arggg. You think Big Sur will break it?

micpool

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Feb 6, 2021, 11:08:39 AM2/6/21
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Probably nothing to worry about in the immediate future. Discussed in detail in this thread:

fg

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Feb 8, 2021, 5:07:13 AM2/8/21
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Good to know, thanks. 

Mike Locke

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May 12, 2021, 11:49:31 PM5/12/21
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I'm working on getting this setup.  I can get the keying to work, but the background image isn't showing. I caught that the past to the video file was wrong, but no file I've tried to reference is working.  

I have Quartz Composer downloaded and running.  Version 4.6.2 and Framework version 5.1

Any thought as to what I should check?

Thanks

Mike

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