Preview Server is a Windows service managing a pool of Viz Engine processes. Client software, such as Viz Multichannel, Viz Pilot and Viz Trio, send requests to Preview Server, requesting available Viz Engine processes. The responding Viz Engine process can provide frames for thumbnails and snapshots in an ongoing preview process.

Clients connect to Preview Server during the creative preview process. When the output is finalized and actually being played out, Viz Engine processes provided by Preview Server are replaced by the Viz Engine directly specified by each client.

Preview snapshots provide an indication of how graphics will look when played-out in high resolution on a Viz Engine.

Preview Server also provides load balancing, and can be used for creating a redundant renderer pool.

For more details, see the Preview Server Administrator Guide.