After Effects Corner Pin

Find the computer-corner pin video on the server and drag it into AE and then to the timeline.

2. Drag any video or picture to AE and then to the timeline.

3. Be sure to select the corner-pin shot in the timeline so you track that and not the other clip. Then go Animation > Track Motion.

4. Make the tracking type: Perspective corner pin

5. Move the tracking markers to the corners of the screen and then analyze forward (play button on tracking panel).

6. Check that the target for the motion is the picture or video you want to put onto the screen. Click Apply.

7. If the blue of the screen shows, scale your video/image up a little.