Samsung SCH-U740 Alias

first of all, i got my black u740 yesterday and i love it! some of my favorite features is asnwering calls without opeing the phone as well as reading texts with the phone closed. and teh speakers are great!
i just wanted to ask if anyone knows if the video wallpaper feature drains a lot of your battery? it seems like it would and i dont want to use it if it does. thanks so much! 😁