How to relay video on Android?

Question

Android

Good afternoon,
faced with the task of relaying a video stream.
Introductory:
there is a local network with Internet access, there is a device in the local network that broadcasts a video stream (for example, a surveillance camera). There is an android device that connects to the source, the application should show the picture from the camera (everything is simple here) and at the same time transmit the same video stream to the server via the Internet (so that another user not from the local network can view the picture from the camera).
Advise where to dig.

Answer 1

Without an external IP in place, you will have to publish the video to a remote server, which will carry out the tasks of distributing the video to those who wish.