Using the mask function, first import the video to be watermarked into the matting, then copy a layer and add a rectangular mask to it at the back door, and then add a fuzzy effect to the rectangular mask. The specific operation is as follows: Step 1: Import the video to be watermarked and drag the video to the timeline. Step 2: Copy the material and put the copy of the original material on the upper layer, and then click the rectangular mask in the toolbar. Step 3: Move the position of the rectangular mask, put the rectangular mask where there is a watermark, and then click the blur effect in the special effect. Step 4: Add a model lake effect and add a fuzzy effect to the rectangular mask layer, so that the watermark can be removed. If you feel complicated, you can also use the following method, AI to watermark. Clipping is a mobile video editing application officially launched by Tik Tok. It has a comprehensive editing function, supports variable speed, has a variety of filters and beauty effects, and has rich music library resources. From February, 20021year, it supports the cutting of all terminals of mobile phones, pads, Macs and Windows computers.