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L2L L2L Live Live to e to e-Lea Learning rning Bridging - PowerPoint PPT Presentation

Jan 11, 2023 •292 likes •521 views

L2L L2L Live Live to e to e-Lea Learning rning Bridging physical and virtual classrooms using an integrated lecture capture and delivery service Matteo Bertazzo - CINECA InterUniversity Consortium 3 rd TF-Media Task Force meeting,

  1. L2L L2L Live Live to e to e-Lea Learning rning Bridging physical and virtual classrooms using an integrated lecture capture and delivery service Matteo Bertazzo - CINECA InterUniversity Consortium 3 rd TF-Media Task Force meeting, Trondheim, October 2010

  2. L2L L2L the L2L service performs a semi-automatic transformation of live lectures into e-learning activities ready for the publication and delivery through an e- Learning platform Main objectives Productivity • “e -learning lessons- hours” / “man - hours to produce them” Lesson’s “Time -To- Market” • low latency for publication Modularity of the service and investments • let’s start now with a flexible service and a plug -in model Content reuse by multiple services • a L2L lesson (or part of it) delivered or used by WebTV or DTT, web portals, other services

  3. The co The context ntext Cineca is a non profit Consortium, made up of 43 Italian universities , the The National Institute of Oceanography and Experimental Geophysics - OGS, the CNR (National Research Council), and the Ministry of Education, University and Research (MIUR) founded in 1967  350+ employees  acts like a trait-d'union between  the academic world , the sphere of pure research and the world of industry and Public Administration supercomputing center , currently  #70 in top500.org list (currently SP6 and BG/P, BG/Q in 2012)

  4. Ref efer erences ences Ministries of  ICT & HPC services for University and Research,  Member & non-member  Foreign Affairs, universities  Justice MIUR - Ministry of Education,   University and Research Health  Public research institutions Universities   Italian National Drug  Technology Transfer to: Agency (AIFA) P .A. & L.A.  National Health Institute  private companies  (ISS) E.U.  Ferrari  Cineca is currently involved Luna Rossa (America’s Cup  in a number of EU Research challenger) Projects in many fields: ENI (Italian National Oil &  supercomputing, economic, Gas Company) physics, bioengeneering, ESA (European Space  pharmaceutical, cultural Agency) heritage… British Library  ... 

  5. Main Main Activities Activities & Resour esources ces Activities Resources Design & management of computing  HPC Systems: High Performance  infrastructure Computing platforms for technical and High Performance Computing &  scientific computing Scientific Visualization IT Systems: "Mission Critical" platforms  Data Center outsourcing  used to host the IT services offered by e-Learning and multimedia services  CINECA LMS (Moodle, BB): integration,  Data Storage environment: a high-end  management, customization of Storage Area Network connected via large-scale platforms (ASP model) fiber channel and serving all the 3D Virtual environment based on  computing systems SL/Opensimulator Graphics and Virtual Reality: a collection  EU Projects  of instruments and expertise for scientific e-Learning consulting  visualization Streaming services  Multi videoconference and Access Grid  and now… Lecture recording  (AGnode): point of access to advanced and delivery services systems of multivideoconference Information System design,  development & analysis Network management  Multimedia Communications  DataWareHouse Services  Portals design and development  Digital Libraries 

  6. Specific Specific inputs/reqs inputs/reqs vs. vs. cons consortium ortium approac approach  L2L service designed to match specific requirements and the consortium nature:  rationalizing resources  putting in place “economies of scale”  supporting different service models • providing good services containing costs • Currently reqs are coming from 5 universities (2 distance learning univs.)

  7. L2L L2L service service components components L2L RECORDER MEDIAMOSA – MOODLE L2L PLAYER INTEGRATION RECORDING STORE - MNGMT DELIVERY Multiple Univs Adobe Flash Media Unique centralized On-line|Off-line Multiple Moodles Player DAM Different usage scenarios (CINECA ASP or Multiformat delivery and (CINECA ASP) Univs in-house) podcasting I N Podcasting T Recorder E G R Mosaic A Modules T UPLOAD Player E D D I Y UNIV-A -- (CINECA) R E M DEPOSIT DAM Modules UNIV-B O T (In-house) E HTML5 Recorder PLY O F (not yet) F - BB L I N Recorder E

  8. L2L L2L – Architecture Architecture Designed following the SOA model used by MM  REST interactions  WebDav Mediamosa DAM Moodle LMS FTP Upload Moodle L2L L2L Ingester HTTP MD Block module Recorder Rest HTTP Rest Moodle Module HTTP Transcoding Server L2L Player Rest Still Server Streaming protocols Download Server Other Services Streaming Servers Speech-to-text QT RN NFS FS Concept Mapper FM WM Ingester module in order to  support L2L lessons’ structure  unpack and ingest L2L packages coming form stations  plug-in additional services (internal | external services using) 

  9. L2L L2L – re reco cord rding ing st stat ation ion L2L station : we provide our univs. with HW and SW  L2L Full : designed to be integrated in a lecture hall – classroom with  A/V facilities (PC, video capture card, PTZ Camera, VGA2USB adapter, Mic , secondary 7” display) + L2L Recorder SW L2L Light : laptop (i5+ class CPU) + Mic + WebCam + L2L Recorder  SW Functionalities  Performs the Recording (up to 2 video sources)  Supports the recording description  automatically : retrieves user profile, Moodle platforms, Moodle  courses using an optional SAML auth (Shib) and WSs; manually : title, description, tags  Performs Sync and MD/Content extraction from MS PPT  presentations (titles, text, JPEGs for thumbs, slide change events) Scheduled/On-demand upload to the DAM using FTP/WebDAV  Features  5 recording modes (A, A+Scr, AV, AV+Scr, AV+Ext)  Supports off-line recording  HQ (1Mbps each video) recording in MS WM format  XML descriptors (technical MD, descriptive MD, structural MD, sync  MD) Content packaging (custom) 

  10. L2 L2L Rec L Recor orde der r - wor workflow kflow O Authentication (SAML) P T I O N Automatic metadata (WS) A L Manual description Lesson type selection Attachments selection Recording (sync) Quality control Manual/scheduled upload

  11. DAM DAM - Mediamosa Mediamosa L2L Recorder the well-known Open Source Digital  Asset Management Platform by SurfNet … production env. based on a clusters  installation of the 1.7 version L2L MM Functionalities in L2L:  Package Mngmt : assets creation, MD mngmt,  collections (faculties),… Analysis/Transcodig : mediafiles  Ingestion analysis, transcoding profiles for FLV- x264-mp3/Ogg-theora-vorbis/MP4- Module x264-aac conversions Multi-format delivery services:  web publication (emb., pod.) and L2L Lesson streaming (existing streaming farm for QT, WM, Flash and RM) Storing all lessons’ files (videos, XML,  Main JPEGs, Attachemnts , PPTs, …) in MM Asset L2L lessons’ representation :  extended DC MD schema in order to  Asset Asset Asset Asset Asset define relationships between MM assets : L2L lesson = main asset (containing 1 main XML descriptor) Concepts WM Original and related assets (containing all Mediafile XML other files) sharing commons set of descriptive MD XML Desc JPEG FLV transc. Mediafile Mediafile Slide

  12. L2L and DAM L2L and DAM – functional functional schema schema Producers Editors Audience L2L Portals Uploads WebApps Modules WebTV Portals e-Learning Publish Manage Ingest Streaming Analyze View Access Streaming Transcode Workflow Metadata Download Metatag WebPub External services Still Store Assets Assets Assets Assets Mediafiles Mediafiles Mediafiles Mediafiles

  13. L2L L2L – Moo Moodle dle mod module ule A standard Moodle module (v1.9+)  L2L activity usable among other  activities inside a course Following the Moodle model, the same  module for mngmt and viewing Fully compliant (backup, restore)  Functionalities:  Teacher view browsing/searching/selecting lessons  using structural and descriptive metadata Managing visibility of content  (presentation, attachments ) in the DEMO course context L2L Player visualization  Currently flash based  Getting all the content from  Mediamosa (Mediafiles, JPEGs, Attachments, Presentations, XML descriptors) A/V visualization and sync  Student view Lesson “navigation” by:  Direct access to the timeline  Slides thumbs  Table of contents (slides’ titles)  Full-text search results  DEMO Concepts 

  14. Moo Moodle dle blo block ck – assets assets mng mngmt mt Moodle module for “course context” Moodle block for “Mediamosa context”

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