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SGI Video Servers

Hilmi OrtadeveciApplied Engineer VSThilmi@sgi.com

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SGI Video Servers

Overview

•Based on SGI Origin Servers•SGI Hardware, Software, and Services to produce a broadcast quality video server

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SGI Video Servers

Key Features

•Open System Architecture•Format Independent•Treats Media Content as Both Media and Data Simultaneously– High speed data networks– File transfer and play/record

simultaneously

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Origin Servers

Hardware Platform

•ccNUMA architecture– Extremely high throughput (multiple uncompressed

HD)

– Scalable• No limits like bus-based architectures

•Origin200 GIGAchannel– High volume product– Highly reliable

• Redundant power and cooling• Mirrored system disks

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Origin Servers

Storage Options

•Internal and External UltraSCSI storage– RAID-0 or RAID-1

•External Fibre Channel storage– Ciprico FibreSTORE and Ciprico 7000– RAID-0, RAID-1, or RAID-3

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Origin Servers

Software Platform - IRIX 6.5

•Variant of SVR4•REACT Real-time Scheduling•UST/MSC Synchronization•XFS Real-Time Filesystems and Guaranteed Rate I/O

•XLV Logical Volumes•dmBuffers

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TMSGI Video Server SoftwareKey Features

Video Server Toolkit

•Modular, Extensible Architecture•Frame Accurate

– Automation control protocols

•Format Independent– MPEG-2 to Film

•I/O Independent– Video, bit stream, network, etc.

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TMVST Architecture Block Diagram

VTR Core

MediaStorageFormat

ControlArchive

I/O Device

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TMVST ArchitectureFormat Modules

•Handle for accessing specific storage formats

•Translation from Media Units to Data Access Untis– Timecode to byte offset

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TMVST ArchitectureFormat Modules

Implementations

•Variable Frame Size (vframe)– RICE, M-JPEG, Uncompressed

•Bitstream (stream)– MPEG-2 Transport Stream and Program

Stream

•DVCPRO (dif)– DVCPRO

•Virtual Clip (vclip)– EDLs

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TMVST ArchitectureFormat Modules

Virtual Clips

• Built from Sequences of Other Clips– List of clips with edit points– Shares media content with original clip– Clip segments must be of the same format

• Treated like All Other Formats• Handles Deletion of Original Clip

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TMVST ArchitectureMedia Modules

Interface to Media I/O Devices

•Manage transfers to and from I/O Device

•Define Port to I/O Device Mapping

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TMVST ArchitectureMedia Modules

Implementations

• DIVO, DIVO-DVC– Uncompressed, RICE, DVCPRO, SDTI

• DVB-ASI– MPEG-2 Transport Stream (up to 45 Mb/s)

• Vela 4-port MPEG-2 decoder– MPEG-2 Transport and Program Streams

• O2 (For Development Purposes)– M-JPEG

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VST ArchitectureMedia Controller

Modules

• Special Media Modules Implement Slave Device Control

– Standard Sony/P2 Protocol

• Enables Consistent Control Interface

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TMVST ArchitectureStorage Module

• Manages Data Storage

• XFS Storage Module– XFS Real-Time Filesystems– XFS Guaranteed Rate I/O

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TMVST ArchitectureArchive Modules

• Interface to Archive Systems– Separate Storage from Clip Cache– Find, Get, Put interfaces

• Implementations– StudioCentral Asset Transfer Service– Special Archive Modules– fsmon– clip mirror

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TMVST ArchitectureControl Modules

Implementations

• MVCP– Text-based native control protocol of VST

• Louth VDCP– de-facto standard automation protocol

• Sony/P2– de-facto standard VTR control protocol

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TMVST Architecture Customizable Controls

• Categories of Configurable Parameters

– File System, Media, System

• Monitor and Adjust System Behavior• Establish Initial Values

– Control Files

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SGI Video Servers

User Tools

•GUI Status (mcstat)•GUI VTR Emulation (mcpanel)•GUI Clip Management (mcclips)•Various Command Line Utilities

– Status and Clip Management

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mcstat

Status Monitoring

•Status of Units•Clip Loaded•Unit State•Position

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mcpanel

GUI VTR Emulation• Cue, Play, Stop,

Record, Jog, Shuttle, ...

Loop Mode• Forward and

Backward

Clip Selection Box

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mcclips

GUI Clip Management• Delete, Protect, ...

Archive Operations• Find, Get, Put

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SGI Video Servers

Video Server Products•Post-Production Video Server

– Non-Compressed and Lossless-Coded storage format with digital I/O

•DVCPRO Video Server– DVCPRO storage format with digital I/O

•Cable Insertion Server– MPEG-2 storage format with analog I/O

•DTV Server– MPEG-2 storage format with DVB-ASI I/O

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TMPost-Production Video Server

Non-Compressed and Lossless Coded•Up to 16 channels (8 input and 8 output)•Serial Digital Video

– 4:2:2 or 4:2:2:4

•Embedded Audio or Separate AES/EBU Audio– Up to 8 channels per video

•Up to 12 hours storage•Automation protocol support

– Master and Slave VTR Control

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DVCPRO Video Server

DVCPRO Format•Up to 16 channels (8 inputs and 8 outputs)

•Serial Digital Video•AES/EBU Digital Audio•SDTI support

– 4X Transfer of DVCPRO

•Up to 48 hours storage•Automation protocol support

– SGI MVCP, Louth VDCP, and Sony VTR

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Cable Insertion Server

MPEG-2 Format•Up to 48 channels (48 outputs)

– Input via File Transfer

•Analog Video Output•Analog Audio Output•Up to 24 hours storage•Automation protocol support

– SGI MVCP and Louth VDCP

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DTV Server

MPEG-2 Compressed I/O•DVB-ASI I/O

– MPEG-2 Multi-Program Transport Stream• Up to 48 Mb/s

•Up to 56 hours storage at 6 Mb/s•Automation protocol support

– SGI MVCP and Louth VDCP

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Video Server Deployments

Sveriges Television (SVT) - Stockholm•10 Regional SGI DVCPRO Servers around Sweden

•File Transfer to Stockholm•Editing in Stockholm using Avid NLE•On-Air Playout from SGI DVCPRO Server•Status

– Installed April 1, 1999– On-Air June 21, 1999

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Panasonic DNA System

DVCPRO News Automation– DVCPRO-based Digital Newsroom System

•SGI DVCPRO Video Server•Panasonic NLEs, VTRs, Camcorders

– NewsBYTE/QuickCutter and DVEdit NLEs

•Prisa Fibre Channel Network– Fibre Channel Adapters and Switch

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Panasonic DNA System

DVCPRO News Automation•Connects with external Automation System– NewsMaker/Nexus– Crispin Corp.

•DNA System is sold by Panasonic

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DNA System Diagram

Transmission

Acquisition

Feeds

SMART-CARTQuickCutter

NLEQuickCutter

NLE

SGI DVCPRO Server

SDTI SDI

SDTISDI

Fibre Channel

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DNA System Deployments

Austin News 8 - Austin, TX•Time-Warner Cable 24 hour local news channel– Installed June 1, 1999– Planned On-Air July 23, 1999

KYW - Philadelphia•CBS owned and operated station

– Planned Install July 15, 1999– Planned On-Air August 15, 1999