There are too many softwares that can make promotional videos, both on computers and mobile phones.

The computer has: colorful animation masters, PR, AE, etc. The first colorful animation is more suitable for people in the primary stage. PR and AE are more difficult and are generally used together. Everyone is familiar with these softwares, so I won't say more. Mobile phones: Xiaoying, Bger, VUE, etc.