How are the special effects of Tik Tok made?

Tik Tok's special effects need to be used in the shooting function. The specific operation method is as follows:

1. First, open Tik Tok. In order to protect personal privacy, some areas are blurred, as shown in the following figure:

2. Click the plus sign below to shoot the vibrato video, as shown below:

3. Then you can see the "special effects" function in the shooting interface, and click the special effects, as shown in the following figure:

4. Then you can choose different kinds of special effects, as shown in the following figure: