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Interactive video lesson plan for: Close-up Streaming Video

Activity overview:

Google Tech Talk (more info below)
May 17, 2011

Presented by Professor Bernd Girod, Stanford University Department of Electrical Engineering.

ABSTRACT

We review recent advances in the technology and applications of interactive region-of-interest (IRoI) video streaming, which allows each user to interactively control pan, tilt, and zoom during playback. This is familiar for high-resolution stills (say satellite imagery and maps), and not yet ubiquitous for video. A high-resolution video is available at the source, but either bandwidth or display size prohibits the streaming of the full video to a desktop computer, tablet, or smartphone. Solutions can be built in a standards compliant manner by breaking up the video into tiles at different resolution levels and simultaneously streaming multiple sub-videos that make up the overall display. Over-the-top delivery can use a client-server model or, for live multicast to large audiences, a P2P overlay. I will report our experiences with ClassX, an experimental IRoI video streaming platform for capturing lectures and seminars at Stanford University. In addition to IRoI, the system implements sophisticated video analysis techniques for automatic tracking of the lecturer and automatic synchronization of digital presentation slides, thus eliminating most human intervention for producing a compelling interactive viewing experience and reducing cost dramatically. ClassX works with Silverlight and Flash clients and now available as open source software at http://classx.sourceforge.net/

Tagged under: google tech talk,interactive video

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