Tegrity 2.0 Technical requirements and informationTechnical Overview — A summary of the proposed technical solution for

Tegrity Campus 2.0 is built on web 2.0 services architecture making it highly scalable, for easy and rapid deployment. Minimal support is required since only one version is deployed at any time, eliminating version conflicts, security risks and potential system incompatibilities. Tegrity’s web service architecture “pushes” the recording functionality out to instructors through a browser, which means it is always up to date. Any computer meeting minimum specifications can capture instruction from any location (on or off campus). When the instructor starts Tegrity, by logging into Tegrity Campus or by clicking on the system tray icon, they always see the latest version of Tegrity Campus.

The Tegrity web services architecture ensures that instructors always use the latest recording and viewing components. The ability for an instructor to record classes is available even if an instructor’s PC is offline (disconnected from LAN or Internet), which provides unlimited flexibility to capture and index recordings from a variety of locations outside of the classroom with any PC or Laptop that meets minimum technical specifications.

The Tegrity recording repository is fully web-accessible, so students and faculty can access it anytime over the internet with a PC or Mac browser, iPod or cell phone. There is no software or dedicated or proprietary hardware to install on faculty or student computers or in the classroom. Students essentially take the class with them to study when and where their schedule permits.

Technical Overview

Tegrity Campus 2.0 uses industry standard Microsoft platform using WMS and Web 2.0 development to deliver a Class Capture System that integrates easily and seamlessly with the MUSC Enterprise. The system database is MS SQL Express and Tegrity Campus 2.0 supports Windows and Macintosh for recording and viewing as well as other mobile devices.

1. Does Tegrity work on both platforms (Mac & PC) with near exact functionality?

Tegrity’s web services architecture allows users to record or view recordings using any computer (PC or Mac) offline or online (on/off campus). The web service takes care of updates automatically, eliminating version conflicts, security risks, and potential system incompatibilities between different platforms. Any computer meeting minimum specifications can capture or view instruction from any location. Users may record full motion video/animation with both Mac and PC. Any recording made on either a PC or Mac can be viewed with either a PC or Mac including full motion video/animation. The playback experience on either platform is identical.

Functional comparison between Mac and PC

	MAC	PC
Record audio	X	X
Record full motion video	X	X
Record anywhere, anytime	X	X
Capture all text as metadata	X	X
Record PowerPoint	X	X

2. What are the minimum requirements for recording or playback (PC & Mac)?

PC:

· CPU Pentium 4, 1.3 GHz

· Windows XP Pro, Windows Vista

· 512 MB RAM (Windows XP Pro)

· 1GB RAM (Windows Vista)

· Minimum 1024 X 768 screen resolution

· Hard Drive – free space about 4GB

· Browser: IE 6.1,7.x, Firefox

· Microphone

Mac:

· CPU PowerPC G5, Intel Core Duo, or Intel Core 2 Duo

· Mac OS X Tiger 10.4, Leopard 10.5

· 1GB RAM

· Minimum 1024 X 768 screen resolution

· Hard Drive – free space about 4GB

· Browser: Safari, Firefox

· Microphone

· VLC Plug-in (no charge, installed automatically upon first use.)

Mobile Devices supported

· Streaming to PC or MAC with internet connection

· Download to computer hard drive

· Burned to a DVD

· iPod (podcast and vodcast)

· iPhone, iTouch, Motorola Razar V3 cell cast

· MP3 player

File formats Supported: ASF, M4B, M4V, MP3, JPG, SQL

3. What are the typical Storage and Bandwidth Requirements?

The amounts of storage and bandwidth required to support one hour of recording varies depending on the type of content being recorded. Based on extensive customer content surveys, we assume that on average, the storage requirements are about 56 MB per hour of recording based on the breakdown below.

The typical composition includes:

Content Type	%	Size (MB)
PPT / Audio	63%	6.3
PPT / Instructor Video	8%	10.7
Instructional Video	12%	16.04
Screen Recording	17%	22.7
Total		55.74

Notes:

1. Allowing students to download the sessions (in addition to streaming) doubles the storage requirement on the server since each recording must to be stored twice - once packaged for streaming, and once packaged for download.

2. Enabling Enhanced Podcasting will add 12MB per hour of recording.

3. Enhanced Mode a recording can be up to 200MB per 1 hour

4. Enabling MP3 will add an additional 7MB per hour.

5. Enabling Vodcasting will add an additional 100MB per hour.

Storage requirements per content type

The following table describes the theoretical size associated with a 1 hour recording of different content types. Note that the typical recording contains a combination of these types depending on the instructor’s teaching style.

Content Type	Size (MB)	Download  Size (MB)	MP3	Enhanced Podcast
PPT / Audio	10	10	7	12
PPT / Instructor Video	22	22	7	12
Instructional Video	30	30	7	12
Screen Recording	80	80	7	12
Average Recording	26	26	7	12

With Enhanced Recording Mode a recording can be up to 200MB per 1 hour when the download option is enabled.

Bandwidth Requirements

While the average data transfer across the Tegrity customer base for 1000 active students per month is about 30GB, there are wide variations depending on each student’s expected behavior. For example, a distance learning student is likely to watch the majority of the recordings from start to end, while a typical on-campus student is likely to watch only 15 minutes of selective content as a replay from class.

Video Frames per second

· Screen -15fps

· Instructional Video – 29.97 fps

· Instructor – 15 fps

· Media room – 20 fps

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