This footage is from a report and the emf, in a 'clean' room i.e. swept before invo is recorded on a dvr spiking and the battery draining. Not been able to reproduce this and cannot explain. Footage then cuts short while later to cctv in the same room, dvr camera battery drains then, after me asking, it comes back on. Cannot explain and cannot reproduce. dvr does have ir remote capability but it's facing the wall so we can discount that. Interestingly we were 'communicating' with a spirit on a ouija board at the time (not my favourite thing but as old school as you can get). Now I might be missing something here with the emf and dvr but I swear nothing was done by the four of us in the room.