Premiere software can enlarge and reduce video images.

1, premiere opens the video.

2. After that, you can see 100% (that is, the screen is full) by going to Effect Control-Motion-Zoom and checking the scaling.

3. After checking the scaling, specify the scaling of the picture.

4. Specify the scale of the picture, and the video image will become smaller.

5. Then move the timeline backwards for a few seconds.

6. Go to the zoom keyframe and click the circle icon (add keyframe).

7. After clicking, it will still turn bright blue. At this time, you need to specify a zoom ratio greater than the previous 15%, such as 15% to 100%, so that the video picture will be gradually enlarged.