My HIK DVR had hidden RTSP streams that some hacker/coder/super sleuth figured out and put on the forum. ( 3 years after the miserable piece of shit was installed)
For that reason, I will crush this recorder with a sledgehammer a couple of times... and then burn it in my firepit with used motor oil.
I would try another brand of Cam.
Of course somebody may stop buy and offer a real solution. but you have mine. Burn it. Burn all HIK....