1. Drag the video material to the video track.

2. Click on the video material, and click on the upper left effect control.

3. Check the scale below the scale.

4. Adjust the zoom height to change the scale of the video.

5. According to the above steps, you can stretch the video picture at will in pr.

Matters needing attention/summary

1. Turn off scaling and adjust the scale freely. 2. Adjust the zoom height to change the video scale.