1. First of all, dr video is the abbreviation of DaVinciResolve, and it is the most advanced professional editing software in the industry.

2. Secondly, after opening the software, find the file add icon in the lower left corner of the interface and click it to prepare to add a video file.

3. Finally, click the Add File button, and then in the file selection interface that appears, select the video file to be cut, select it and click Open. After adding the video file to be processed to the software interface, enter the editing interface for editing.