Crop Movie Video If you want to remove the black edges or just convert part of the video area from your video file, you can click the Crop button to crop the video of the current video file r by dragging the frame around the video or setting the crop values: Top, Button, Left and Right. Capture a clip from your video file Click the Trim button to open the Trim window and trim the current video file by dragging the Start Time slider to set the start time and dragging the End Time slider to set the finish time. Tip: Edit Movie (Optional) iSkysoft iPod Movie Converter allows you to edit your video files before converting them: 1.