How to Add Green Screen Captions in DaVinci Resolve
Step-by-step guide to importing and keying green screen caption videos in DaVinci Resolve.
3D Qualifier / Delta KeyerStep-by-Step Instructions
Import Both Video Files
In DaVinci Resolve, import your original footage video along with the exported green screen caption video file (captions-greenscreen.mp4).
Place Caption Video on Track Above at 0:00
Drag your caption video onto an overlay track directly above your main footage on the timeline. Align the start point to exactly 0:00 so captions remain in perfect synchronization with speech.
Apply 3D Qualifier / Delta Keyer
Navigate to Color Page → Qualifier → 3D or Fusion Page → Delta Keyer. Use the color picker / eyedropper tool to select the bright green background.
- Eyedropper tool across green background
- Invert selection
- Clean Black / Clean White
Verify Crisp Text Edges & Playback
The green background disappears completely, leaving your styled captions floating cleanly over your video. If any tiny green outline is visible, increase tolerance/shadow slightly.
Alternative: Black Background + Screen Blend
In Vaanex AI, you can also export with a Black background. In your video editor, change the caption clip's blend mode to Screen or Add. This eliminates the need for chroma keying entirely and is ideal for glowing styles like Neon Glow.