This angst over a video feed is idiotic. Maybe I am wrong, but my guess is that this process will probably raise so much sediment there is no way you could see anything anyway. At least not enough to tell if the process was successful. It might be days before it settles down enough to tell.
I thought they would have to cut the top off the riser to perform this procedure. That will immediately open her up full blast. I suspect that is why the feed will be cut.