User`s guide
60 Chapter 7: Configuration
Local preview uses a local Viz Engine; however, it is not a recommended setup if 
the machine does not meet the hardware requirements.
Remote preview uses a remote Viz Engine. This can either be a real time or a 
snapshot preview. The real time preview option uses a reference monitor, and is 
the recommended solution for graphics designers, template designers and 
control room operators. The snapshot preview option uses a shared Viz Engine, 
and is the recommended solution for multiple simultaneous users (e.g. for 
thumbnail generation and newsroom and non-linear editing users).
In general it is recommended to add the pilot1
(lowercase only) tag on the scene’s 
default (main) director in order to set a specific preview or generation point. The 
same goes for transition logic scenes that must have the tag set for the 
foreground scenes.
See Also
• Preview Port Numbers
• Working with Local Viz Preview
• Working with Remote Viz Preview
• Profile Configuration on how to configure Viz Engines
• Local Viz Preview and Remote Viz Preview on how to preview graphics
7.5 Preview Port Numbers
By default Viz Engine uses port number 6100 for both program and preview 
rendering. If a port number is changed Viz Engine must change its 
communication port as well. Use Viz Config to set the new communication port 
number. Note that this is not required for the multiplexing ports (50008 or 
50010, see 
Ports and Connections)
For local preview it is recommended to configure a Viz Engine to use the default 
port 6100. If local preview is a requirement, it is recommended to use the Viz 
Preview License server to minimize the need for hardware license dongles.
For remote preview there are several options; however, the recommended option 
is to configure a second Viz Engine to use the default port 6100 (which will give 
you a real-time preview on a reference monitor).
For remote preview where you want to support multiple users a remote Viz Engine 
can be configured to use preview port 50008 (which will give you a client-side 
still/snapshot preview).
For remote preview where you need to use the same Viz Engine for both program 
and preview renderering you can use port number 50010 (which will give you a 
still/snapshot preview on a reference monitor (see Working with Remote Viz 
Preview)).
Note: Do not use a program renderer for snapshot preview using port 50008.
For Viz Engine 2.x users, a Viz Multiplexer is required for preview. Viz Multiplexer 
connects to Viz Engine using port 6100 or the multiplexing port 50008.










