1 / 17

NJVid – A Statewide Video Network Based on RUcore and Fedora

NJVid – A Statewide Video Network Based on RUcore and Fedora. The Third International Conference on Open Repositories. Southampton, UK April 1 - 4, 2008 Ronald C. Jantz, Grace Agnew, Isaiah Beard Rutgers University Libraries. Topics for Discussion.

ronald
Télécharger la présentation

NJVid – A Statewide Video Network Based on RUcore and Fedora

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. NJVid – A Statewide Video Network Based on RUcore and Fedora The Third International Conference on Open Repositories Southampton, UK April 1 - 4, 2008 Ronald C. Jantz, Grace Agnew, Isaiah Beard Rutgers University Libraries

  2. Topics for Discussion • A Statewide Video Network – An IMLS Grant Funded Project based on RUcore and Fedora • Architecture and Use Scenarios • NJVid Technical Challenges

  3. NJVid – A Statewide Video Network • A digital video network supporting over 600 New Jersey institutions (academic, K12, & cultural heritage) • Three types of video collections • Video Commons – publicly available videos • Commercial videos available through educational consortia • Lectures on demand – customized annotations of videos • Technical platforms based on RUcore and Fedora

  4. Object XML NJVid Concept Architecture(Based on RUcore) NJVid Commons User Input (metadata) Partner Portals New Jersey Institutions Video Workflow Management System Collection & Preservation Services Fedora Repository Service Digital Object Repository (Fedora) Matrox Axio Encoder Digital Video Master Object Ingest 4

  5. Descriptive Technical Source Rights Digital Prov. Large Files - the Video Digital Object Video Object Repository ID Metadata Behaviors (Disseminators) Data streams SMAP1 – StrMap (TOC) FLV1- download MOV1 – QT stream XML1 – transcript (opt) XACML policy (external) ARCH1- Archival master (external datastream)

  6. Architectural Challenges • Managing Large Video Files – Ingest, Presentation, and Preservation • Annotation of Videos for Lectures on Demand • Authentication and Authorization

  7. NJVid Storage & Server Architecture Partner/Custom Portals • Stream QuickTime • Download Flash Fedora and Middleware Host Server Video Stream Fedora Repository (Digital Objects) Streaming Server (Darwin) Backend Storage Server Local Storage /repos (NFS) • External Storage • Checksum validation Archival Masters

  8. End User Scenarios • General Public Access to NJVid Commons • Instructor Annotation for Lectures on Demand • Student Access to Licensed Videos

  9. Annotations of Videos The basic concept is to allow an instructor to customize any video by selecting time segments to be played as part of a course offering. Additional descriptive metadata and access permissions can also be applied.

  10. Annotating a Video • Instructor Annotation • Instructor logs in to special “annotation” portal and is authenticated as “instructor” from ABC institution • Instructor selects and previews video to determine time segments to be used for instruction • Instructor creates annotation object and references video to be used • A structure map with appropriate time segments of the source video is created • Additional access restrictions may be applied • Student Access • Logs in as “student” from institution ABC • Student selects “course 101” on Faculty portal and plays video • Disseminator/action script plays video according to time segments in structure map

  11. Annotation Portal Scenario Repository ID Institution: ABC Astronomy 101 Review of Theories Structure Map The Universe: 5’ to 11 ‘ Big Bang Theory: 20’ to 45’ Other Theories: 65’ to70’ URI – pts to video stream Access Restrictions Metadata QuickTime Behaviors (disseminator) Flash Original Video Object Data streams SMAP1 – StrMap (TOC) XACML Policy Annotation Object Annotation Screen Facsimile

  12. Collection C V2 A1 V3 V1 V1 V2 NJVid and RUCore – Two Fedoras and Distributed Collections Circles – collection objects Rectangles – content objects NJVid RUcore Solid line – explicit membership Dashed line – dynamic membership Collection B NJDH (Grant Project) Collection A Faculty Collection Sub Collection B1 Sub Collection B2 isAnnotationOf 12

  13. Statewide Sharing of Multi-site Collection Content Concept – Allow a collection manager to subscribe to any collection on a remote RUcore/Fedora site Assumption – Each site reuses the RUcore data model and architecture Indexing and Search Architecture A common indexing service layer supporting all sites Centralized indexes Local control of collections thru RUcore collection management services

  14. Authentication and Authorization Flexible access control based on Shibboleth framework NJVid will need to support the full range of institutions Participating institutions will need to provide LDAP directory information Must establish agreement on shared attributes across institutions: person, department, role Architecture One backend RUcore/Fedora repository supporting multiple GUIs Many front-end partner portals Authentication – evaluating alternatives including DRAMA Authorization using XACML policies

  15. Further Development Challenges • Storage Architecture • Archival Storage and “Managed External” • Large file local ingest • Redundancy and dark archive • Preservation Framework • Installation of RUcore/Fedora at other institutions • More formal software development methodology • Release/support processes for multiple locations

  16. RUcore Open Source Software AREA Software/Tool/Technology • Applications PHP/MySql (by RUL) • Journals Open Journal System (PKP) • Search Engine Amberfish • Workflow Management PHP/MySql (by RUL) • Management Services PHP/PERL/MySql (by RUL) • Handles/persistent IDs CNRI Handle server • Video Streaming Server Darwin (Apple) • Digital library framework Fedora • OS/Webserver Linux-Solaris/Apache

  17. Video Specifications • Video source – analog and digital camcorder • Archival master is uncompressed AVI • Streaming protocol is QuickTime H.264 • 29.9 frames/second, 640 x 480 resolution, data rate from 384 – 512 kb/sec • Delivery to user as QuickTime or Flash

More Related