SGI Media Server™ for Broadcast User’s Guide Version VST 2.2.1 007-4403-003 CONTRIBUTORS Written by Ken Jones Illustrated by Chris Wengelski and Chrystie Danzer Production by Karen Jacobson Engineering contributions by Peter Allen, Achuith Bhandarkar, Sebastian Brings, Philippe Churlet, Sandeep Gupte, Ray Festa, Ardene Kannely, Marlon Leon, Jim Montine, Mark Negovan, Matthew Rehrer, Chris Shapter, Richard Stein, and Parkson Wong Other contributions by Danielle McGurk and Brian Payton COPYRIGHT © 2003–2005 Silicon Graphics, Inc. All rights reserved; provided portions may be copyright in third parties, as indicated elsewhere herein. No permission is granted to copy, distribute, or create derivative works from the contents of this electronic documentation in any manner, in whole or in part, without the prior written permission of Silicon Graphics, Inc. LIMITED RIGHTS LEGEND The software described in this document is "commercial computer software" provided with restricted rights (except as to included open/free source) as specified in the FAR 52.227-19 and/or the DFAR 227.7202, or successive sections. Use beyond license provisions is a violation of worldwide intellectual property laws, treaties and conventions. This document is provided with limited rights as defined in 52.227-14. TRADEMARKS AND ATTRIBUTIONS SGI, the SGI logo, IRIX, Origin, and XFS are registered trademarks and CXFS, Performance Co-Pilot, and SGI Media Server are trademarks of Silicon Graphics, Inc., in the United States and/or other countries worldwide. Harris Automation and Louth are trademarks of Harris Corporation. Horita is a registered trademark of Horita Co., Inc. Little Red is a trademark of Miranda Technologies, Inc. Panasonic is a registered trademark and DVCPRO is a trademark of Matsushita Electric Industrial Co., Ltd. Sony is a registered trademark and DVCAM and IMX are trademarks of Sony Corporation. UNIX and the X device are registered trademarks of The Open Group in the United States and other countries. All other trademarks mentioned herein are the property of their respective owners. New Features in This Guide Changes to this guide include the following: • Added support for SGI InfiniteStorage RM610 disk systems to the following: - Section “Other Publications” on page xxiii - Chapter 1, “Overview of the SGI Media Server” - Chapter 2, “System Setup” • Added play and record support for the DVCAM and DV (16-bit/48 Khz only) compression types throughout the guide. • Miscellaneous corrections 007-4403-003 iii Record of Revision Version Description 001 December 2003 Original publication. 002 August 2004 Updated for the release of VST 2.2. 003 January 2005 Updated for the release of VST 2.2.1. 007-4403-003 v Contents Contents Figures . xv Tables . xvii What This Manual Contains . xix Who Should Read This Document . xx Related Documentation . xx Release Notes . xxi Online VST Man Pages . xxi Program/Utility Files . xxi Command/Control Summaries . xxii Other Publications . xxiii Obtaining Publications . xxiii Conventions . xxiv Reader Comments . xxiv 1. Overview of the SGI Media Server. 1 Functional Overview . 1 Software Overview . 3 Clip Cache . 5 Core Software . 5 Control Interface Module . 5 Storage Device Interface Module . 6 Media Device Interface Module . 6 Compression Formats . 7 Video I/O, Compression, and File Formats . 7 Logical Playback and Record Units. 9 007-4403-003 vii Contents Hardware Overview . 12 The System Unit . 15 Disk Storage . 16 External Devices . 16 Internal Devices . 17 Video Device Control . 17 Supported SMPTE Standards . 18 2. System Setup . 19 Power Requirements . 20 Rack Space Requirements . 21 Sample Space Requirements for Model 325. 21 Sample Space Requirements for Model 345. 22 Sample Space Requirements for Model 365. 22 Sample Space Requirements for Model 385. 23 PCI Configuration Requirements. 23 PCI Bus Requirements . 23 General Guidelines for Card Placement. .24 Recommended Card Layouts . 25 A Basic Two-Channel System ( Model 325) . 25 A Four-Channel Model 345 System or a Six-Channel Model 365 System . 26 A Maximum Eight-Channel System (Model 385) . 26 Video/Audio Connections . 27 PCI-VIDAUD-MSB-B Video/Audio Cards . 27 The MSB-REARPANEL-B Rear Panel . 28 Video Connections . 29 SDI Video Connectors . 29 Genlock/Composite Connectors . 30 Audio Connections . 30 AES/EBU Audio In Connectors. 30 AES/EBU Audio Out Connectors . 31 ANALOG AUDIO Connectors . 32 viii 007-4403-003 Contents 3. System Configuration . 33 Configuration Files . 33 Configuring Device Interfaces . 36 Configuring Audio and Video Devices in Your System . 36 Setting Device Parameters . 36 Configuring System Defaults. 37 Configuring Video Compression . 38 Configuring Audio Support . 41 Input . 41 Output . 43 Channel Map/Source Control . 44 Channel Map/Channel Pairs Control . 44 Channel Map Examples . 45 Identifying Audio Ports . 46 Disabling Audio . 46 Configuring the SGI Media Server for Control by Remote Devices . 47 Control Port Configuration Line . 47 protocol. 48 type. 48 port . 48 speed . 49 parity . 49 signalport . 49 rate . 49 latency . 50 clips=path/* . 50 Signal Configuration Line . 50 Example control-in.conf File . 51 007-4403-003 ix Contents Configuring the SGI Media Server to Control Other Devices . 52 protocol . 52 connection . 53 serial_port . 53 speed . 53 parity . 53 Configuring the VTR Daemon (vtrd) . 54 Mapping Physical Ports to Logical Port Names. .54 Configuring for 625/50 Systems . 54 Tuning the SGI Media Server (Setting the Maximum DMA Size) . 55 4. Running the SGI Media Server . 57 Starting and Stopping VST . 57 Controlling the Autostart of VST . 58 Starting VST Manually . 58 Stopping VST . 58 Setting Startup Options . 59 Checking VST Status . 59 Logging Events . 59 VST Log Message Structure . 60 Configuring Logging . 61 Managing Log Rollover . 62 Monitoring the System. 63 vtrstat . 63 Standard IRIX Tools . 64 5. Adding and Removing Clips. 65 Overview of Adding Clips Procedure . 66 Media Types and Formats. 67 Media Types . 67 Media Formats . 67 x 007-4403-003 Contents Adding Clips to the SGI Media Server . 68 Transferring Clips to the SGI Media Server . 68 Proxy Transfers . 70 MPEG-2 Index File Transfer . 71 Clip Alignment . 72 Degree of Alignment . 72 Minor Alignment. 72 Major Alignment . 72 Notifying the SGI Media Server. 73 Transferring a Clip Segment . 73 Overriding Clip Segment Transfer . 74 Removing Clips . 74 MXF Record and Playout . 74 6. Virtual Clips . 77 Virtual Clip Command Overview . 78 File Operations on Virtual Clips . 79 Creating and Opening Virtual Clips . .79 Building a Non-Virtual Clip . 79 Saving, Closing, and Removing Virtual Clips . 80 Working with Segments . 80 Adding Segments to Vclips . 80 Listing Segments in a Vclip . ..