About This Guide

Sirius Video™ is a video option that provides IRISŪ and POWER Onyx™ workstations equipped with RealityEngine™, RealityEngine2™, or VTX™ graphics with broadcast-quality video. Sirius Video can also be installed in CHALLENGE™, POWER Series™, and POWER CHALLENGE™ server configurations, making its broadcast-quality video a network resource.

Note: See the release notes for compatible versions of IRIX on various platforms.

For controlling videotape recorders, Sirius Video includes an on-board V-LAN™ transmitter. The transmitter sends high-level commands to videotape recorders that are equipped with receivers purchased separately from third parties.

The option consists of a board that fits into a VME slot in the chassis, a paddleboard, a breakout box, cables, software, and documentation.

Note: Sirius Video uses the Video Library™ (VL). VL device-independent calls and controls are explained in the Digital Media Programming Guide. The Sirius Video Programming and Configuration Guide is written on the presumption that you are familiar with the VL information in the Digital Media Programming Guide.

Structure of This Guide

This guide includes the following chapters and appendices:

Chapter 1 

“Sirius Video Features and Capabilities” outlines the main components of Sirius Video, explains Sirius Video video formats and video handling, and introduces the V-LAN interface.

Chapter 2 

“Programming Sirius Video” describes VL and Sirius Video specific controls for using Sirius Video to accomplish common specific tasks.

Chapter 3 

“Sirius Video Blending and Keying” explains how to use VL and Sirius Video controls to blend images.

Chapter 4 

“Controlling the General-Purpose Interface (GPI)” explains the Sirius Video device-dependent controls for the GPI port on the Sirius Video breakout box.

Chapter 5 

“Controlling the V-LAN Interface” explains how to control other video devices using V-LAN commands with Sirius Video device-dependent controls.

Chapter 6 

“Using Sirius Video Utility and Demonstration Programs” explains how to perform certain tasks with little or no programming using utility and demonstration programs included in the Sirius Video software.

Appendix A 

“Hardware Specifications” summarizes technical specifications for Sirius Video.

Appendix B 

“Configuring Sirius Video” gives sample configurations for various combinations of video equipment.

Appendix C 

“Setting Up vcp for Your Video Hardware” describes connecting video equipment to the Sirius Video breakout box and using the control panel vcp to configure Sirius Video for the equipment.

Appendix D 

“Sirius Video Color-Space Conversions” explains Sirius Video color spaces, the mathematical operations performed during conversions, and the implications of color space conversions.

Appendix E 

“Example Programs” gives the parameters for some of the example programs included with the Video Library for Sirius Video.

An index completes this guide.


In command syntax descriptions and examples, square brackets ( [ ] ) surrounding an argument indicate an optional argument. Variable parameters are in italics. Replace these variables with the appropriate string or value.

In text descriptions, IRIX™ filenames are in italics. The names of IRISŪ keyboard keys are printed in boldface typewriter font and enclosed in angle brackets, such as <Enter> or <Esc>.

Messages and prompts that appear on-screen are shown in typewriter font. Entries that are to be typed exactly as shown are in boldface typewriter font.