As of now, the admin area has the ability to rename uploaded videos, but it is one by one, if there is an option of renaming all the videos in one click, that will be a good help, firstly, if someone got your video hotlinked with other site then in one click all your videos where rename and the hotlinked videos where broken on sites where your videos where hotlinked, (they will need to look for the source code again to get the right video name to hotlinked again, but surely you will just rename it again for the hotlinked to be broken again, in other words, the hotlinker will do much work just to hotlinked again your videos, hope you get what's i am trying to say