This is pretty much the way the internet works.
Data flows across the net much like little candies on a conveyor belt.
For instance, a person talking in front of a white wall is easier to send because much of the picture remains the same from frame to frame. However a shot of children running and playing might be harder to send because so much of the picture changes in each frame. That's why a video of someone talking seems to move naturally while a shot of a baseball game might appear to be a series of jerky still shots. Also your questions must be emailed to us using a special window we've designed. Realvideo is far more sophisticated and troublesome for us.