So imagine you have a bunch of toys you love to play with, like a toy car, a teddy bear, and a ball. You can play with them separately and they are lots of fun, right?
Now imagine you take all those toys and combine them, you could put the teddy bear in the car and make it drive around while bouncing a ball! This new combination is like a mashup!
In the same way, a video mashup is when someone takes different videos, like clips from movies, TV shows, or music videos and puts them together to make something new and fun!
For example, someone could take a clip of a cat playing, another clip of a person dancing, and mix them together so that the cat seems to be dancing to the music!
It's like when you mix different colors of Play-Doh together to create a new color. You can take different video clips and mix them together to make something completely new and exciting!