@karsten13 Yeah, I was messing with that a little today. I couldn’t find an iframe that was reliable enough.
I ended up installing a Home Assistant add-on called go2rtc to serve the video and on the magic mirror, I installed the MMM-WebView module. It works a lot like an iFrame but more stable.
So far, it seems to be working. I have MotionEye and SecuritySpy sending command line webhooks upon motion triggers to Home Assistant that in turn shows and hides the module on the magic mirror. I would have liked to get MotionEye working, but this actually sems faster and more stable.
Thanks so much for your help though, to both of you.