Draw motion detection areas on live view

[curtishall]

http://community.bluecherrydvr.com/responses/motion-detection-display

[antonsviridenko]

Possible options:

1. Server can draw bounding boxes over motion regions inside RTSP stream
2. Bounding boxes are computed on server and coordinates are sent in some separate data stream, then boxes are drawn above live view in clients. There can be synchronisation issues
3. Client does motion detection independently, using same algorithm and parameters (threshold, areas, etc) as server. Double work is performed on server and client