In editing software, the function of picture-in-picture can be used to add dynamic background to video. The following are the detailed operation steps:

Tools/raw materials:

iphone 12

ios 13.5

Clip 7.3.0

1, click to start creation.

Click Create Now in the clip to import dynamic background footage.

2. Click on the picture-in-picture.

Click the "Picture in Picture" option at the bottom.

3. Click to add a picture to the picture.

Click the "Add Picture in Picture" option at the bottom to import the required video material.

4. Click Smart Keying.

After selecting the video material of the picture-in-picture, click "Smart Keying".

5. Wait for the key to complete

Just wait for the key to remove the background of the original video (if you want to keep the original video intact, you don't need the key).