Hypervideo
Group Name: Adept
Group Members
• Vinay Kalasannavar
– Content authoring, presentation
– Code samples
• Sagar Sahay
– Strategy authoring
• Poorna Chandra Suraj
– Labelling and weights
– MOT/LAG Workflow
Introduction
• Hypervideo = "hyper linked video“
• Video stream that contains embedded,
user click-able anchors
• Allowing navigation between video and
other hypermedia elements
Introduction
Introduction
Introduction
Introduction
Introduction…
• HV = video + a non linear information structure
– Allowing user to make choices
– content of the video and the user's interests
• Analogous to hypertext:
– "Element of time“
– Text is normally static, video is dynamic
• Hypervideo has different technical, aesthetic,
and rhetorical requirements
– A link from an object in a video, that is visible for
only a certain duration
Motivation
• Wider availability of broadband - has
increased the linking video capabilities
• Digital libraries - video is an important
part.
• Vast video archives: could be useful in
education and historical research.
Motivation for us
• VideoClix
– http://www.videoclix.tv/#vcx_pjsb7d234081
• Hypervideo and Silverlight:
– "a video that contains embedded links that
allow navigation between video and other
media elements"
– http://www.silverlight.net/learn/videos/silver
light-videos/hypervideo-part-1/
How it works
• Segment the video appropriately
• Add the metadata required to link from
frames (or even objects)
• To logically relevant information in other
media forms
Concepts and Technical
Challenges
• Hypervideo is challenging: separating video
into linkable content.
• Video = sequence of images
– To segment a video into meaningful pieces
(objects/scenes)
– It is necessary to provide a context, both - in
space and time
• Manual segmentation difficult:
– For .E.g.:
• A short video at the rate of 30 frames per second
• 30 seconds = 900 frames
Challenges cntd..
• The smallest linkable unit of a video
– a single frame: easy, but cannot contain video info
– a scene (minimum sequential set of frames that
conveys meaning)
– algorithms need capability of detecting scene
transitions
• Time introduces complexity:
– Assuming frame is the smallest time unit,
– Separating the frame image into its constituent objects
- segmentation at the object level.
– Follow the same object through a sequence of frames
(object tracking)
Concepts cntd..
• After nodes are segmented and
combined with the associated linking
information.
– This metadata must be incorporated with
the original video for playback.
– The metadata is placed conceptually in
layers, or tracks, on top of the video.
– This layered structure is then presented to
the user for viewing and interaction.
Concepts cntd..
• Three components:
– One or more videos
– Markers embedded into the video
• invisible to the user
• but perceived by the player
– The hypervideo player
• The display technology, used to play the
hypervideo content.
Hypervideo authoring tools
• Authoring = The process of creating hypervideo content
• Examples:
– VideoClix:
• A commercially available technology plays on players like QuickTime and
Flash
– Adobe Flash:
• Flash was not designed hypervideo authoring tool - can be difficult using
Flash alone
• Added functionality through outside software - for e.g.: MoVideo and Digital
Lava
– Asterpix:
• offers a hypervideo service and browser.
• Users can convert internet videos sites (such as YouTube) on the fly
• viewers may interact and navigate the hypervideo without the need for any
special software.
– Silverlight.
Hypervideo authoring tools
• In Silverlight:
– A word appears on the screen and when
you click on it, the first video pauses and a
second video begins detailing your
retirement plan options.
– You click on the question mark...
– You click on the glowing question help
button…
Related research
• US Patent 6462754 (October 8, 2002)
– Method and apparatus for authoring and linking video
documents
(http://www.patentstorm.us/patents/6462754.html)
• Combining Spatial and Navigational Structure in
the Hyper-Hitchcock Hypervideo Editor
– (http://www.fxpal.com/publications/FXPAL-PR-03250.pdf)
• HyLive: Hypervideo-Authoring for Live Television
2008
– (http://www.springerlink.com/content/r46415461n0505
85/)
Hypervideo Applications.
• Education
– Computer-Based Training
– Research and Development
• Entertainment
– Youtube
• Marketing
Possible areas for future
research
• Aesthetic and rhetoric properties of
hypervideo
• Development of standards
• Automatic generation of hypervideo
• Computer-Based Training
Thank you.
• Questions?
References
1.http://en.wikipedia.org/wiki/Hypervideo#
cite_note-13
2.http://www.csdl.tamu.edu/~l0f0954/acad
emic/cpsc610/p-1.htm
3.http://silverlight.net/learn/tutorials/hyper
video-cs/