In previous versions of Resolve, it was necessary to inform the Color page that it should output an alpha. You could try opening the topmost clip on the Color page, right-clicking anywhere in the node tree background, and choosing 'add alpha output” from the dropdown menu. So, it’s likely the Color page that’s messing up the alpha channel. I could be wrong about bottom-first processing, but it definitely does send to the Color page before returning to Fusion to handle the second clip, whichever one that actually is. I think that when Resolve sees two Fusion clips stacked on top of each other, it processes theīottommost clip’s Fusion effects first, passes the V1 Fusion to the Color page, then calculates V2 Fusion and V2 Color. To set this up, lasso both of the clips on V1 and V2, right-click, and choose 'create Fusion clip' from the contextual menu (do this to new, ordinary video clips, not ones you’ve already made into Fusion clips).īut in case you are trying to preserve some amount of edit flexibility, or have another reason to keep the Fusion clips distinct on the Edit timeline, I suspect that the issue is an order-of-operations problem related to the Color page. The best way to control the order-of-operations is to do all of your compositing in a single Fusion clip all of your keying and corner-pinning happens in a single Fusion clip, ideally. This is a failed video render screenshot: The only problem is as I keep editing Davinci 'forgets' about it in the final render. I can fix this by deleting the clip, dragging in the same clip from the media collection, and moving it into the fusion area as a new node and reattaching it exactly where the old version of the clip was. It works perfectly in the view port, but when I render the video the screen is completely black. The bottom layer is just a screen and the top layer is the rest of the clip with an empty spot for the green screen. The only thing appearing in the final fusion clip is the replaced green screen. The top clip I keyed out the green screen, the bottom clip I made into a fusion clip where the green screen is corner pinned with animation to follow the green screen. I duplicated the clip and put one clip on top of the other one. I have a green screen in the shot and my band playing in front of the green screen.

I am trying to render out a music video in Davinci Resolve.

Green screen in davinci resolve 15