Metavid is like a big library where you can watch and search for videos of important things that happened in big meetings in the government. These meetings are called "Congressional hearings" and they are where the people in charge of the country talk about what they are doing and what they want to do.
Imagine that you go to school and the teacher asks all the students to give their ideas on how to make the classroom a better place. The teacher writes everything down on a big piece of paper and later on, everyone can look at that paper and see what the different suggestions were. Metavid is like that big paper, but for the government meetings.
People who couldn't go to the meetings, or who just want to see what happened, can go to the Metavid website and find the video of that meeting. They can watch it as many times as they want and even share it with others. This way, more people can learn about what the government is doing and make informed decisions about how they want to be represented.