What are TikTok's format guidelines for ads?

TikTok provides users with tons of ad format guidelines — Some of them are as follows:

1. The minimum resolution must be 640 x 640 px, or 540 x 960 px.
2. The duration can range anywhere between 5 to 60 seconds.
3. The app name must be 4 to 40 characters. Whereas the brand name has a limit of 2 to 20 characters.
4. The file size must not exceed 500MB.