Add a circle during the video process. The most common one is that at the end of the American animation, the video screen gradually shrinks into a shape. Here I will share the operation method.

1. First open pr cc 2018 and create a new project. Import video footage and drag it to the timeline.

2. Open the effects panel, search for "Generate" and find "Circle".

3. Drag the "circle" effect onto the video material, and the video material will turn into a circle.

4. By modifying the center parameters, you can see that the position of the circle has changed.

5. Finally, select the blending mode as "Template alpha".

6. You can achieve the effect of displaying a video screen in a circle.