How to cut the video background?

The first category: video matting with white background (actually removing white).

Open Cut → Click Create → Click Material Library → Click Collection → Select a forest snow scene → Click Add → The ratio is 16:9→ Turn off the original sound → Click Picture in Picture → Add Picture in Picture → Select Lion Video on White Background → Click Add → Adjust the position and length of two videos → Select Lion Video → Click Blending Mode → Try the tools here and dim them separately.

The second category: video matting with black background (actually removing black).

Click on the plus sign behind the main track → click on the material library → click on the collection → select the rural night scene video → click on the add → add the picture in picture → click on the material library → click on the collection → select the fireworks with black background → click on the add → click on the mixed mode → try them separately to see which one works best. Generally, color filtering is the best.

In the first two categories, we discuss white background and black background. The only thing about characters is that black and white characters and black paper are treated according to the above two categories: 1 and 2.

The third category: green screen material matting, sometimes the processing is not ideal.

Click on the plus sign behind the main track → click on the material library → click on collection → select grassland video → click on add → add picture in picture → click on the material library → click on collection → select green screen eagle → click on add.

Click the chroma matting → the color picker points to green → the intensity and shadow are adjusted → the edge of the eagle and the green button are not clean. The solution is:

Select Eagle → Click Filter → Select Black and White → Select Black Gold and Silent Film. Black gold works well.