DaVinci Resolve Free green-screen tutorial
Tested2026-09-18, DaVinci Resolve Free21.1 on macOS.

Import Voyager-green-screen.drp through Project Manager > Import Project.
Relink greenscreen-source.mov in the Media Pool if offline.
Timeline1920x1012,24fps,12seconds/288frames:
0-3s original plate;3-6s initial sampled key;6-9s refined key+animated garbage mask;9-12s final alpha preview.

All processing after source preparation uses native Fusion nodes in Resolve.
Initial key:DeltaKeyer background RGB .2670236528,.5553417802,.201710254;ThresholdLow0,High1;ReplaceModeSoftColor;no garbage mask.
Refined: same sample;ThresholdLow.25,High.75;ReplaceModeSoftColor; inverted Polygon1 connected to DeltaKeyer's Garbage Matte input. Polygon animation follows source-frame motion, with tighter shaping around non-green floor/shoe regions. Not a universal preset. Raw source light is warm; its orange rim remains.
Bothcomposites use Background1 RGB .035,.065,.12 via Merge1; final output is opaque.
The alpha-check copy uses a CustomTool to copy DeltaKeyer's output alpha to RGB before compositing. It is a grayscale diagnostic, not a transparent movie.
The mask was prepared using local template matching on source-frame regions to follow small drift, then checked in native renders. It is not a demonstration of Resolve's automatic Tracker. Inspect masks throughout the shot when adapting this project. Minor edge contamination can still need shot-specific finishing; this is a technical keying comparison, not a photorealistic environment composite.

Files:
greenscreen-source.mov: display-ready ProRes4444,1920x1012,24fps,72frames/3s.
native-comparison.mp4: full12s H264 Resolve export remuxed fromQuickTime without re-encoding video; silent.
comparison.mp4: four synchronized panels,3s, resized and labeled after native rendering.
refined.mp4: web viewing copy of the refined3s result.
Voyager-green-screen.drp: editable project, source media paths need relinking on another computer.

Source: Tears of Steel,shot04_3b,linear_hd/04_3b_00024.exr through04_3b_00095.exr.
https://media.xiph.org/tearsofsteel/tearsofsteel-footage-exr/04_3b/linear_hd/
(CC) Blender Foundation | mango.blender.org
Creative Commons Attribution3.0:https://creativecommons.org/licenses/by/3.0/
https://mango.blender.org/sharing/
https://mango.blender.org/production/4-tb-original-4k-footage-available-as-cc-by/
The release notes specify that the EXRs were converted fromACES to Rec709scene-linear. Preparation used Blender5.2's bundled OpenColorIO config, Linear Rec.709 -> Rec.1886 display / Standard view,16-bit PNG intermediate, then ProRes4444 with BT709 tags. No key or fake green screen was baked into the source. No audio. Native keying, matte/mask animation, compositing, diagnostic rendering, and comparison labels are our modifications. No endorsement by performers is implied.
