This time we will use Fusion and a luma key. But in this example, we are just looking at workflow. Generally, you would want to finesse the key, and the higher quality footage (10 bit vs 8 bit), the easier it is to get a clean key. Click the Highlight icon on and off to see your selection.Click on the eyedropper, and drag across a range of fire to select as much as possible.
Select LUM from the pulldown to key just the brightness information.Click on the eyedropper (qualifier) to go into the Qualifier section. We need to create transparency (drop out the black) by using a Luma Key.Drag from the blue (alpha) output of the Node to the alpha output.Right-click in the gray area of the Nodes, and click Add Alpha Output.With the Fire clip on the timeline, click on the Color page at the bottom of the interface.As a note: white is opaque, gray is semi-transparent, black is transparent. What we select is kept (the fire), and the black becomes transparent. We want to remove the black, so this clip can be exported and then placed on top of other footage in another app or Resolve.
This clip doesn’t have an alpha and shows fire on a black background. In this example, we’ll be using the free fire clip. Rendering with Alpha from the Delivery Pageģ Ways Create Transparent Backgrounds 1.
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