VideoLecturesMashup: using media fragments and semantic annotations to enable topic-centred...
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1 VideoLecturesMashup Tanja Zdolšek, Jožef Stefan Institute + VideoLectures.NET & Lyndon Nixon, MODUL University Vienna GmbH April 24, 2014. OCWC Global, Ljubljana, Slovenia
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We introduce the VideoLecturesMashup, which presents re-mixes of learning materials from the VideoLectures.NET portal based on shared topics across different lectures. Learners need more efficient access to teaching on specific topics which could be part of a larger lecture (focused on a different topic) and occur across lectures from different collections in distinct domains. Current e-learning video portals can not address this need, either to quickly dip into a shorter part focused on a specific topic of a longer lecture or to explore what is taught about a certain topic easily across collections. Through application of media technologies promoted by the MediaMixer project – semantic annotation and media fragment URIs – we have implemented a first demo of VideoLecturesMashup.
Transcript of VideoLecturesMashup: using media fragments and semantic annotations to enable topic-centred...
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VideoLecturesMashup
Tanja Zdolšek, Jožef Stefan Institute + VideoLectures.NET&
Lyndon Nixon, MODUL University Vienna GmbH
April 24, 2014. OCWC Global, Ljubljana, Slovenia
14.02.13 Slide 2 of 40
• Start: support service
• Now: largest web portal with video edu&open access
• 18.500 videos (1-1,5h)
• 11.900 authors
• 10.000 unique visitors/day
14.02.13 Slide 3 of 40
Facts
• Informal learning channel• Promoting science, fostering knowledge• OER• Mobility• Award-winning
• UN WSA for „e-science & technology“• 2009 – WSA, 2013 – WSA of the decade
• Aims
14.02.13 Slide 4 of 40
Media creation & re-use in e-learning
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• E-learning materials are increasingly multimedia: more video recordings, more accompanying materials such as slides– E-learners need to be able to search
and retrieve the material they are looking for (based on its subject)– Consumption trends towards mobile
and on-the-go means interest focuses on the parts of the material of particular interest
14.02.13 Slide 5 of 40
VideoLectures MashUp
14.02.13 Slide 6 of 40
Current USER workflow
14.02.13 Slide 7 of 40
Problems• Search (text matching only over titles, descriptions)• Users looking for learning materials on specific topics -
unique requirements• Users looking for very specific information - fragments, not
entire lectures• Lack of time for watching, the need for mobile version• The need for meaningful structures, curriculums• Videolectures.NET strategy includes continuous
introduction of new technologies - important initiative to provide users with access to the semantically enriched content fragments...
14.02.13 Slide 8 of 40
Current CM workflow
14.02.13 Slide 9 of 40
Problems• From manual to automatic• Save CM‘s time, employer money• The need for new functionalities(automatic textual transcriptions from speaker audio,
translations (FP7 transLectures), concept extraction from slides (not just titles but textual content), video analysis, semantic annotation - video annotation process, segmentation...)
• Manually make meaningful structures, curriculums (takes too much time!)
14.02.13 Slide 10 of 40
Benefits from new technology
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• Simplify existing workflows• Improved search and browsing in general and retrieval of fragments• Fragments of learning materials from the site, ordered in a meaningful way• Content on demand; easier and quicker access to specific topics of interest• Direct intuitive access to a single learning channel built around the topic
searched for• Producing new learning materials - curriculums• Content specifically addressable and hence bookmarkable/saveable for
subsequent reference and viewing • New contexts -> dynamic provision of such learning resource would be
particularly useful in mobile consumption contexts• These could subsequently form new distribution channels for VideoLectures
(e.g. video streams / TV channels on selected topics)• This could drive to more repeated access and win new users!
14.02.13 Slide 11 of 40
MediaMixer Project and VideoLectures MashUpHow media fragments and their re-
mixingcan enable new experiences for e-
learners
14.02.13 Slide 12 of 40
The MediaMixer hub• Video analysis tools• Video annotation tools• Video metadata creation and publication• Digital rights management• Media search and retrieval• Media negotiation, purchase and re-use
14.02.13 Slide 13 of 40
New User Workflow
14.02.13 Slide 14 of 40
New CM Workflow
14.02.13 Slide 15 of 40
VideoLecturesMashup - demo
http://mediamixer.videolectures.net
14.02.13 Slide 16 of 40
14.02.13 Slide 17 of 40
14.02.13 Slide 18 of 40
14.02.13 Slide 19 of 40
14.02.13 Slide 20 of 40
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Thank you for your attention!
VideoLecturesMashup: GaberMediaMixer Project: [email protected]
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