Grass Valley iTX System v.2.6 - Manual (Page 376)

Using iTX Workflow
Job services include the following:
• The Proxy Generation Service.
• The Keyframe Generation Service.
• The File Copy Service.
• The Workflow Service.
You may have multiple job services of the same type, sharing jobs, in your system.
Proxy Generation Service
The Proxy Generation Service creates low-bit-rate proxy files in MPEG-4 format. We call these
files browse copies, since multiple users can browse them at the same time without
overloading the network.
The generation of a proxy file is a job that the Proxy Generation Service handles in response to
a request that may be made in one of three ways:
• By a Media Watcher. The Media Watcher may be set up to request the proxy
generation of video files placed in an Inbox folder on an iTX Media Store.
• By an operator using an action button (for instance, one on the Asset layout) at an iTX
Desktop Workstation.
• By a Media Rule.
To use the service, you must install it on its own machine in the iTX system.
If selected for installation, a Proxy Generation Service configuration dialogue box pops up at
the point the service is being installed, allowing you to select some options regarding the type
of browse media you would like generated. See the section Install a job service on page 380.
Keyframe Generation Service
The Keyframe Generation Service captures keyframes (.jpg images) at regular intervals from
broadcast-quality video files. It stores the keyframes in the Media folder on the main iTX Media
Store.
The service performs this task for a Media Watcher that is set up for capturing keyframes. As
video files are placed in the Inbox, the Media Watcher requests the Keyframe Generation
Service to create keyframe-generation jobs.
A keyframe-generation job can also be prompted by a Media Rule. See below, “Media Rules
and MediaFlow Processes”.
To use the service, you must install it on its own machine in the iTX system.
File Copy Service
The File Copy Service can copy any of the media files associated with an asset (broadcast-
quality file or proxy file) to an external location.
The external location may be a machine in a remote iTX domain or a Windows folder in a third-
party system (e.g. one on an Apple Final Cut Pro workstation).
March 2015 System Administrator Guide Page 376 of 404