Videos can be used for a lot of different things. You can animate textures, obviously, but you can also animate things like normal maps to get really interestin

Videos can be used for a lot of different things. You can animate textures, obviously, but you can also animate things like normal maps to get really interesting effects. I recently read an article that described how one of the more recent Assassin's Creed games used animated normal maps to make rainfall patterns on the ground.