I think this is what you need to calculate the bandwidth.
https://www.supercircuits.com/resour...dth-calculator

Actually, you will most likely take a serious hit on both ends cost wise unless you are careful. 20+Mbps is easily hit.

20Mbps X 60sec X 60min X 24hours = a lot of bandwidth

Set up a alert system, then dial in and check your video as it would be much cheaper bandwidth wise.