2. Then drag the timeline to the beginning of the video range to be cropped.

3. Then click the segmentation tool in the toolbox. This position is also called the in point.

4. Then drag the timeline pointer to the end of the video range to be cropped.

5. Select the video behind.

6. Click the segmentation tool in the toolbox again. This position is also called a dot.

7. Then press and hold the delete key on the keyboard to delete.