Transit AC to AC at YYZ from LHR to MCO about 6-8 weeks ago, I had to wait a fairly short time for my name to show, go to a guy with a monitor, who pointed at an image that he claimed showed my bag but which I couldn't make out any details at all. It seemed very smooth. However, the bag was not there on arrival in MCO and was delivered to my home 3 days later.
The video process gave me a bit of leverage in my complaint since I could insist that it was not the Other Airline that failed to deliver the bag to LHR who was at fault.
Remove the video process puts that excuse back in play.