How to add a black screen video to your base video

To put and resize a black screen video clip into another video clip, you need to use a video editing software like Adobe Premiere Pro, Final Cut Pro, DaVinci Resolve, or even simpler tools like CapCut or iMovie. Here's a general process:Steps to Overlay and Resize:

1. Import Both Videos:
   • Load your base video and the black screen clip into your editing software.
2. Drag Clips to Timeline:
   • Place your base video on the main video track.
   • Place the black screen clip on a track above the base video.
3. Resize & Position the Clip:
   • Select the black screen clip.
   • Use the Transform/Scale settings or Crop Tool to resize and position it where you want it to appear on the base video.
   • Adjust the Scale/Position settings until it looks right.
4. Apply Blending Mode (if needed):
   • If the black screen should be transparent (e.g., if it’s an animation with a black background), change its Blending Mode to something like “Screen” or “Add”.
   • Alternatively, use Chroma Key/Color Key effect to remove the black color.
5. Adjust Opacity (if needed):
   • Reduce the opacity if you want it to be semi-transparent.
6. Preview and Export:
   • Check how the overlay looks in the preview.
   • Make any adjustments necessary.
   • Export the final video.