How to speed up green screen processing?

Question

(The topic started in the AE forum but I decided to use ultrakey instead of keylight)

Adding ultrakey for green screen processing makes exporting video a lot slower. It looks like it's going to take 3 hours to render 36 minutes of video. Using hwmonitor to peek at the CPU and GPU, neither are fully utilized (maybe only 30%), even though adobe media encoder is set to use CUDA. And thtis is just HD. I have other cameras in 4K also with green screen.

Exporting is not the only issue. It causes playing or scrubbing the timeline to lag and stutters. I have to temporarily disable ultrakey to edit the video.

Does anyone have tips and tricks to speed up ultrakey? Can I create mask areas and tell ultrakey not to process those areas?

I think the only practical way to edit this project is to first create intermediate files with the green screen processed. This way the green screen will only need to be processed once, and I can edit my project without lags.

I don't suppose there is a significantly faster green screen plugin for premiere pro?

avpromedia · Accepted Answer

I have since found out I blamed the wrong party. It's actually the blur effect I put on the jpg background that's slowing down premiere. Sorry, ultrakey. You'd think a static image's effect would be rendered once and not cause any slowdown but oddly when I turn off the blur, premiere runs smoother.

Why is that?

jjc.tri · Answer

hi i use chroma keying a ton. Use rendergarden it'll speed up processing a TON!  https://www.mekajiki.com/rendergarden/

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