The goal of the project was to use an Open-Source On-Demand Streaming Server for the Content Management System Zope/Plone, which allows On-Demand Streaming for Audio and Video files via the RTSP-Protocol (Real Time Streaming Protocol) in Plone.
After some research about existing solutions we decided to use the Helix DNA Server.
This product has lots of additional features like a detailed right management, automatic conversion of various audio/video formats and more.
A detailed documentation of the product and its underlying technology can be found at IAEMStream documentation.