Since you’ve already tried clearing the cache and adjusting encoding settings without success, here are some additional troubleshooting steps you can try:

1. Check Your Export Settings

• Adjust Frame Rate & Resolution: Ensure your export settings match your original video settings (e.g., if your source video is 30fps, export in 30fps).
• Bitrate Adjustment: Try lowering the export bitrate to see if it reduces glitches.

2. Optimize Your Project for Performance

• Chroma Key Optimization:
  • Use a high-quality green screen video to ensure smoother keying.
  • Adjust the "Edge Strength" and "Edge Feather" settings to avoid heavy processing strain.
• Reduce Video Cuts: Excessive cuts may cause CapCut to struggle during export. Try merging or grouping clips before exporting.

3. Update & Reinstall CapCut

• Check for Updates: Ensure you have the latest version of CapCut installed.
• Reinstall the App: Sometimes, a fresh install can fix underlying software issues.

4. Hardware & Performance Optimization

• Check GPU Acceleration:
  • If enabled, try disabling GPU acceleration in settings.
  • If disabled, try enabling it to see if performance improves.
• Close Unnecessary Programs: Ensure no other resource-intensive applications are running in the background of your device while exporting your video.

5. Try Exporting in Different Formats

• Use a Different Codec: Try exporting with H.264 instead of HEVC (or vice versa).
• Change Output Format: If you’re exporting as MP4, try MOV or another format to see if the issue persists.

6. Test with a Short Sample

Before exporting the entire video, try exporting a short 10-15 second clip with your current settings to identify if the glitch occurs consistently.

If none of these steps work, reach out to CapCut Support on the email [email protected] with your system details and a sample file.

Watch the below video for solving common glitch problems while downloading your video: