[Feature Request] MQTT/Webhook trigger alert.

[SonomaGTS]

First of all thank you so much for creating this!
I use this in conjunction with an RF modulator to pipe my server's desktop showcasing this in full screen to all my tv's using coax. Some of my streams are just updated jpg's through motioneye which I am able to add a red 2px border to via python and external person detection which gives me a nice clear alert at which cameras have something to look at. I have yet to find a good means of being able to do this with my rtsp feeds though.

Is it possible to add an ability to remotely trigger like a colored border to an individual viewport or even the around the entire screen through an MQTT trigger or webhook?

[iEvgeny]

Currently, there is no such possibility. But this looks like work for D-Bus, which may be supported in the future.