1. 1. After the video file is inserted into the movie guide, in order to make the content of the movie more concise, you can extract fragments from the material and directly extract the essence of the material.

2. Then, after inserting the video material in the movie guide, select the icon of the material to be trimmed in the media file list, and then click the "Extract video clips from the material" button.

3. Then the dialog box "Trim Video for Many Times" pops up, drag the shuttle wheel at the bottom of the preview window, and release the mouse to the position of 2.02 seconds.

4. Then, click the 800.0 drag cycle to promote the machine frequency clip from the parent material. After setting the position where the file starts editing, click the "Set Start Mark" button, and determine the position where the material ends editing through the shuttle wheel and the "Go to previous frame" or "Go to next frame" button.

5. Finally, after setting the end editing position of the file, click the "Set End Mark" button, and finally click the "OK" button to return to the movie guide and finish trimming the material.