1. Open pr, right-click the mouse in the blank space of the Project panel, select Import, import the video material and drag the video to the v1 track

2. Right-click the mouse in the blank space of the Project panel, select New Project-Adjust Layer and click OK

3. Drag the adjustment layer to the v3 track to modify it. Drag it to the adjustment layer (Video Effect-Generation-Circle)

5. Select the adjustment layer, open its Effect Control panel, and find the circle.

Modify the radius value (that is, the circle size) to the appropriate size.

Modify the circle-mixed mode to normal <