Is there any software that can make the video taken by mobile phone turn into slow motion?

Tik Tok, beauty shoot, watermelon video are all ok. Here, taking Tik Tok software as an example, the operation steps are as follows:

1. Enter the software download center, search, download and install Tik Tok app software.

2. After the installation, find and open the "Tik Tok" application on the main screen of the mobile phone.

3. After entering the Tik Tok app, click the "+"button at the bottom of the interface to add videos.

4. After entering the video adding interface, click the "Upload" video button in the lower right corner to upload the video that needs to be converted into slow motion on the mobile phone.

5. After uploading, just click "extremely slow" or "slow" for the video clip that needs to be converted into slow motion.