1. REPLAY An Integrated and Open Solution to
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An Integrated and Open Solution to
Produce, Handle, and Distribute
Audio-visual (Lecture) Recordings
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

2. ETH Zurich, Switzerland
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

3. October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich
A/V in academia
REPLAY
Opencast
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

4. Multimedia Services, ETH Zurich - Groups
Infrastructure & Support IS
Videoconferencing & Collaboration VC
Production & Distribution PD
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

5. Production & Distribution - Services
Audio- and Videoproduction
Lecture Recording
Distribution
Free Cutting
Animations
Competence Centre
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

6. October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich
A/V in academia
Academic films
Instructional films
Documentations
Interviews
Image video
Recording of events
Recording of talks/speeches/lectures …
Podcast(ing)
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

7. October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich
iTunes
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

8. October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich
iTunes U
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

9. October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich
iTunes U - Berkeley
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

10. Podcast portal ETH Zurich
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

11. Podcast portal ETH Zurich - channel
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

12. Podcast portal ETH Zurich - episode
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

13. Podcasting - problems and deficiencies
Commercial environment
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

14. October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich
iTunes Store
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

15. October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich
YouTube
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

16. Podcasting – structural problems and deficiencies
Commercial environment
Hardware obligations
Lack of openness
Structural requirements (RSS)
Functional range
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

17. Podcasting - operative problems
Integration into academic IT
Workflow
Quality & reliabilty with VGA-capture (Epiphan)
Scalability
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

18. October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich
Workflow
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

19. Request for production
System Overview
Metadata
(Autom.) Prod.
Content
User
Integrator
Distribution
Query
service
Annotations
Manager
Annotations
Indexer
Load
Cache
lookup
Reindex
Archive
Store
Composer
Content and
Metadata
Archive
Index
Distribution
Formats
Searchindex
and Cache
Request for production

20. Acquisition (Playmobil)
Automated recording
Capturing of vga and presenter
Automated tracking
Services
Live preview
Status and control
Scheduling via iCalendar feeds
Interfaces
Open source GNU/Linux and Python
Extension hooks
Metadata
(Autom.) Prod.
Content
User
Integrator
Distribution
Query
service
Annotations
Manager
Annotations
Indexer
Load
Cache
lookup
Reindex
Archive
Store
Composer
Content and
Metadata
Archive
Index
Distribution
Formats
Searchindex
and Cache
Request for production

21. Request for production
Integration
Recorder schedule (via iCalendar)
Communications with recorder
Integration drop box
Identifier assignment
Services
Scheduling
Job tracking
Manual upload (bundle building)
Quality assurance and trimming
Recorder management
Interfaces
Media types
Drop box
API for bundle management
Extension hooks
Metadata
Content
(Autom.) Prod.
User
Integrator
Distribution
Query
service
Annotations
Manager
Annotations
Indexer
Load
Cache
lookup
Reindex
Archive
Store
Composer
Content and
Metadata
Archive
Index
Distribution
Formats
Searchindex
and Cache
Request for production

22. Request for production
Indexation
Extraction of isochronic metadata
Contextual harvesting
Services
API for indexer plugins
Extension hooks
Metadata
Content
(Autom.) Prod.
User
Integrator
Distribution
Query
service
Annotations
Manager
Indexer
Annotations
Reindex
Load
Cache
lookup
Archive
Store
Composer
Content and
Metadata
Archive
Index
Distribution
Formats
Searchindex
and Cache
Request for production

23. Request for production
Archive
Access to content and metadata
Content migration
Services
Metadata
Content
(Autom.) Prod.
User
Integrator
Distribution
Query
service
Annotations
Manager
Annotations
Indexer
Load
Cache
lookup
Archive
Index
Content and
Metadata
Reindex
Store
Composer
Distribution
Formats
Searchindex
and Cache
Request for production

24. Request for production
Composition
Composition of distribution formats
Trimming, branding, watermarks etc.
Services
Default commandline encoder
Pluggable encoding engines
Extension hooks
Metadata
Content
(Autom.) Prod.
User
Integrator
Distribution
Query
service
Annotations
Manager
Annotations
Indexer
Load
Cache
lookup
Reindex
Archive
Store
Composer
Request for production
Content and
Metadata
Archive
Index
Distribution
Formats
Searchindex
and Cache

25. Request for production
Consumption
Query service
Metadata harvesting
iTunes integration
Services
API for searching
Query webservice
API for live context plugins
Extension hooks
Default user interface
Interfaces
User
Query
service
Cache
lookup
Annotations
Store
Searchindex
and Cache
Distribution
Formats
Metadata
Content
(Autom.) Prod.
Integrator
Distribution
Manager
Annotations
Indexer
Load
Reindex
Archive
Composer
Content and
Metadata
Archive
Index
Request for production

26. Request for production
Distribution
Download and streaming
Statistics gathering
Management of distribution cache
Services
API for statistics evaluation
Extension hooks
Usage statistics
Interfaces
Metadata
Content
(Autom.) Prod.
User
Composer
Distribution
Load
Request for production
Store
Searchindex
and Cache
Formats
Integrator
Query
service
Annotations
Manager
Annotations
Indexer
Cache
lookup
Reindex
Archive
Content and
Metadata
Archive
Index

27. Request for production
System Management
Workflow management
Resource planning
Error handling
Special workflows
Notification
Services
API for workflow engine
Extension hooks
Management console
Interfaces
Metadata
Content
(Autom.) Prod.
User
Integrator
Distribution
Query
service
Annotations
Manager
Annotations
Indexer
Load
Cache
lookup
Reindex
Archive
Store
Composer
Content and
Metadata
Archive
Index
Distribution
Formats
Searchindex
and Cache
Request for production

28. October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich
Key features
Automation - Standardized HW to capture audio, video and - content in the classroom (PLAYMOBIL) - Videotracking - Automated workflow with optional manual intervention
Scalability
Modular Design
Standards
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

29. October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich
Key features
Archival, long-term accessibility - Persistent Identification using Digital Object Identifier (DOI) - “Native” Archival (DV, H.264) for best possible re-usage
Content-based pin-point access - Optical Character Recognition - Natural Language Processing - Annotationen (material, comments, links) - MPEG-7-based isochronic metadata
Interactive, collaborative usage
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

30. October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich
User Interface
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

37. October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich
REPLAY – User Interface
Collective
Interactive
Enrichment
From audiovisual content to multimedia learning object
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

38. October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich
REPLAY by comparison
Classic
short-term
monolithic
proprietary
static metadata
manually allocated metadata
consumption
individual usage
REPLAY
long-term
pin point access
standardized
isochronic metadata
content-based metadata
interactive usage
collective usage
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

39. October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich
REPLAY by comparison
Podcast Producer
Production
Encoding
Distribution
REPLAY
Production
Encoding
Distribution
Long-term archival
Persistent Identification (DOI)
Indexation (content-based)
Searchability
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

40. October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich
REPLAY by comparison
Podcast Producer
Player
Proprietary
Apple HW
REPLAY
User Interface
Open
Standard-oriented
Scalability
Platform agnostic
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

41. October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich
REPLAY – Open Source
REPLAY
Lesser GNU General Public License (LGPL)
REPLAY Release October 2008
REPLAY 1.0 operativ I/2008
replay.origo.ethz.ch (development platform)
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

42. October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich
REPLAY by comparison
Podcast Producer
Player
Proprietary
Apple HW
Commercial
REPLAY
User Interface
Open
Standard-oriented
Metadaten (Dublin Core)
Platform agnostic
Community
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

43. October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

44. October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich
Mission statement
Build and deliver an - Open Source - enterprise-level - integrated and interoperable
framework to - produce, - process, - distribute, - and preserve
audiovisual objects
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

45. October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich
Why Opencast?
Opencast is an initiative driven by higher education institutions to empower…
… institutions to make informed choices about capture, processing, and distribution infrastructure for audio/video,
… faculty to teach courses and share knowledge with their students and learners worldwide without technology getting in the way,
… students to access and shape media into a more meaningful tool for learning,
… everyone to easily find and engage with educational video, audio, and other rich media from instructors and institutions around the world.
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

46. The Opencast community
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

47. October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich
REPLAY and Opencast
UC Berkeley and ETH Zurich are key drivers in the Opencast Community
REPLAY as a technical starting point for Opencast
REPLAY will be migrated into Opencast
Opencast Community as medium for further development
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich

48. October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich
Contact
October 2008: Olaf A. Schulte, Multimedia Services, ETH Zurich