Operating equipment: Dell computer.

Operating system: win 10.

Operating software: adobe premium 2.9 1.

1, open pr software to import video, and pull the video to the timeline.

2. Select the effect in the upper corner, as shown in the figure below.

3. Search for the intermediate value in the effect, and then drag the intermediate value to the video to be watermarked on the timeline.

4. Then an effect control will appear on the left. You can see that there is an option to take the middle value under the effect control.

5. There is an ellipse, a square and a free drawing below the middle value. You can create a mask according to your own needs and adjust the size of the mask to suit the size of the watermark.

6. After adjustment, there is a radius under the mask. Adjusting the radius can make the watermark gradually blurred until it disappears, and the radius can be adjusted freely.