Can't tell much, but we built the whole media streaming prototype in less than 2 months.
My responsibilities in the project were:
The most interesting part was building the WebRTC client for the IoT device.
It may seem easy, but try to find at least one working solution for streaming video & audio from two cameras attached to a small IoT device, while receiving and playing incoming audio streams & data messages.
This area is completely taken by uv4l these days, which did not satisfy the requirements we had.
During my experiments I also wrote a native XMPP client for Jitsi rooms.
In this project I personally used Golang, TS (Angular), C (gstreamer), Bash, Python and other interesting things like XMPP in order to see how other solutions are functioning.
I really liked working on this one, because it was challenging and I was seeing other people suffering for years trying to solve the problem. I Hope we helped them :)
Time invested: < 2 months.
I was made with in Ukraine