Oracle Video server, Manual

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Putting It Together: The Video Round Trip
Concepts 1-15
Putting It Together: The Video Round Trip
So how does a request from the client machine for digital video result in that video
being delivered and displayed to the viewer? This section illustrates that process,
known as the video round trip, by showing typical configurations in each of three
video environments: broadband, enterprise, and Internet.
You can learn more about streamed-video round trips in the online Oracle Video
Server Manager Quick Tour.
All Environments
At its most fundamental, a streamed-video round trip functions as shown in
Figure 1–4 and described as follows:
1. Client Tier The video client sends necessary configuration information (and, in a
VOD situation, the request for video).
The client device can be:
■
A set-top box connected to a television set or monitor and to a public or a
private network. This is a typical client device for use in a broadband delivery
environment.
■
An NC (Network Computer) connected to a network. Through the network,
the Network Computer accesses an NC server and the OVS.
■
A PC (Personal Computer) connected to a network.
2. Network
The network receives, processes, and forwards information between
the client device and OVS. This portion of the video round trip is the part that
primarily defines the environment as broadband, enterprise, or Internet.
3. Application Server Tier Oracle Video Server receives video requests, processes
them, and (if necessary) communicates with the video-database server to obtain
digital-video titles and files.
4. Data Server Tier (Optional) The video database maintains metadata concerning
the actual digital video files, accesses and delivers video-file information to OVS.