That's fine and all, but for 121 flying video/cams don't belong up in our bidness.
Devils advocate question here, but why? How is 121 different from what I do, in terms of, they are both flying. Curious why 121 would be singled out from all other flight operations?
The biggest reason against, that I can see, is data misuse; something that is supposed to be used for safety, being used for punitive actions. Of course, that can happen with a CVR too, even though it shouldn’t.
For reference, where the systems are installed in our birds, for the cockpit, the instrument front panel and center console can be seen. You can see the pilot’s hands, but can’t really see the pilot unless they lean forward into the field of view.