It is actually filming, by many cameras from different angles.
no, I know there are special cameras filming. I just meant they don't show "film" of the match. What the cameras capture is used to make that videogame-type animation that we see when we watch a challenge review. We don't see the actual court or ball or background; just a computer simulation.
An automatic review when the umpire overrules means no more overrules at all whatsoever.
Well, that's fine as well. Then we'll just have players challenging linesmen. As it is, when you have one official (linesperson) saying 'out' and the other official (umpire) saying in, I can understand why players almost always challenge; they know that one official saw it their way. But it sort of lures them into using up a challenge.
I guess you could say "hey, that's the players" problem.' But another way to look at it is: if the linesperson and the umpire don't agree, shouldn't we go to the video review to ensure that the call is correct?