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How to Add Green Screen Captions in CapCut

Step-by-step guide to importing and keying green screen caption videos in CapCut for perfectly synced styled captions.

Editor: CapCut
Recommended Effect: Chroma Key
Background Color: Chroma Green (#00FF00)

Step-by-Step Instructions

1

Import Both Video Files

In CapCut, import your original footage video along with the exported green screen caption video file (captions-greenscreen.mp4).

Project Media Bin
my_footage.mp4
Primary Video Track
captions-greenscreen.mp4
Exported Caption Track (Exact Duration Match)
2

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.

TIMELINE (00:00:00)SNAP TO 0:00:00
V2:
captions-greenscreen.mp4 (Starts 0:00)
V1:
my_footage.mp4 (Main Footage)
A1:
Voiceover Audio
3

Apply Chroma Key

Navigate to Select Clip → Video → Cutout → Chroma Key. Use the color picker / eyedropper tool to select the bright green background.

Effect Inspector: Chroma Key
Key / Target Color:
#00FF00 (Chroma Green)Eyedropper
Recommended Settings:
  • Color Picker (select green)
  • Intensity: 10–25
  • Shadow: 50
4

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.

Before Chroma Key
WORD BY WORD
After Keying: Clean Composite
WORD BY WORD
Zero green fringes or halo artifacts

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.

Create Captions in Vaanex AI
Other Guides:Adobe Premiere ProDaVinci ResolveFinal Cut Pro