User`s guide

18 Chapter 3: Requirements
IMPORTANT! Do not run firewall or antivirus scanning software on the server.
3.3.7 Media Sequencer
The Media Sequencer is middleware software primarily used by control
applications to connect to for example render engines, newsroom systems and
video server (e.g. Viz One) systems.
More concrete the Media Sequencer is a framework for defining and executing
media elements. The media elements are defined in a tree-based schedule that
the sequencer interprets. The schedule is saved as an XML file (named
default.xml). The XML file, in short, contains the configuration settings and the
playlists saved to it by the control application.
The Media Sequencer’s scheduler has a high-resolution timer that manages a
Virtual Document Object Model (VDOM) that contains the schedule. The scheduler
also performs the actual execution of the schedule by interpreting elements
describing actions from the VDOM. The communication between end user
products and the Media Sequencer mostly goes through a protocol named
TreeTalk.
Executable(s) VizDbNamingService.exe
VizDbTerminal.exe
Ports and
Connections
19392-19396 (in most cases the ports are configurable).
Local drive access Read and write access to database folders (configurable).
Operating system Windows XP 32-bit
Table 14: Media Sequencer specifications
Software Oracle 10g Runtime Client 32-bit
Media Sequencer 1.22
Optional : Oracle 11g Runtime Client 32-bit
Executable(s) scheduler.exe (if running in Console mode)
Ports and
Connections
8580 (REST), 8594 (Media Sequencer TreeTalk)
Services scheduler.exe
Local drive access Access to Oracle client files and folders.
Read and write access to the following folders:
C:\Program Files\vizrt\
C:\Documents and Settings\All Users\Application
Data\Vizrt\Media Sequencer
Network access Uses the Bonjour protocol to announce available services.
Table 13: Viz Graphic Hub specifications