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VR problem with 2D Green Screen subject

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Tolu Exmore
VR problem with 2D Green Screen subject
on Jan 2, 2018 at 10:50:18 pm

Hello,
Wondering if anyone has come across this problem and any potential fixes.
I filmed a 2D subject on green screen to include them in a VR environment. I shot on a Blackmagic camera in 4K. I have tried several workflows to include the person into the scene, but looking through Vive goggles, they end up looking a bit blurry and their edges looked jagged. The problem seems to happen only when I apply the Skybox Project 2D effect on them. As soon as I put that effect on my keyed footage, the edges look jagged as opposed to without it.
Here is the details of my most recent workflow; I key the original footage in after effects -> dynamically link and bring into Premiere -> Apply and position with Project 2D. I tried a different workflow where I applied and positioned the effect in after effects and then dynamically linking into Premiere, but I got the same results...jagged edge lines.
The final output for this is to be viewed through a headset. Working on a Mac Pro 3.5 GHz.
Any suggestions?


Thanks!


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Dave LaRonde
Re: VR problem with 2D Green Screen subject
on Jan 3, 2018 at 3:39:18 pm
Last Edited By Dave LaRonde on Jan 3, 2018 at 3:39:35 pm

Try exporting the full-size clip with an alpha channel and re-importing. It might work.

Of course, NOTHING's going to help if the VR stuff ends up scaling the clip beyond... oh, say 120%.

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


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Tolu Exmore
Re: VR problem with 2D Green Screen subject
on Jan 3, 2018 at 5:30:59 pm

Thanks! Will try it out and see if that helps


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Tolu Exmore
Re: VR problem with 2D Green Screen subject
on Jan 4, 2018 at 4:21:18 pm

Thanks again for the suggestion Dave, but doesn't seem to work. I get the same jagged edge. Going to try another possible workaround


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Dave LaRonde
Re: VR problem with 2D Green Screen subject
on Jan 4, 2018 at 6:54:26 pm

My guess is that the VR is scaling up the video, revealing the aliasing.

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


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Mike Sevigny
Re: VR problem with 2D Green Screen subject
on Jan 25, 2018 at 2:48:50 pm
Last Edited By Mike Sevigny on Jan 25, 2018 at 2:50:29 pm

Hey Tolu,
This is actually a common problem in 360 and is based on several factors.
I explain what's happening and how to fix it in this tutorial [@ 36:52]:

Hope this helps

Mike Sevigny
CTO - Torus Media Labs
https://www.torusmedialabs.com/


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Tolu Exmore
Re: VR problem with 2D Green Screen subject
on Jan 29, 2018 at 6:02:22 pm

Thanks! Will try this out.


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