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22 November 1999 VVD: VCR operations for video on demand
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Proceedings Volume 3845, Multimedia Systems and Applications II; (1999)
Event: Photonics East '99, 1999, Boston, MA, United States
Current Video on Demand (VoD) systems do not provide for interactive VCR-like scan operations such as rewind or fast- forward. Pre-storing the entire movie on a set-top box for implementation of such operations is currently neither practical nor feasible. Other approaches to VCR-like controls are either computationally complex or the server or consume large amounts of bandwidth during the operation. This paper proposes a novel technique, VVD, for real-time implementation of VCR-like operations, supporting multiple scan speeds, for Video on Demand with low latency and overhead. VVD uses multi-level compression of movie files to encode the same movie at a hierarchy of playout rates. Depending on the rate at which a scan operation is requested, the corresponding compressed movie file is transmitted. Frame dropping and repetition are used to provide smooth speed transitions among the multiple levels. The overhead of this scheme can be controlled to be less than 100% of the movie storage size.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ravi T. Rao and Charles B. Owen "VVD: VCR operations for video on demand", Proc. SPIE 3845, Multimedia Systems and Applications II, (22 November 1999);


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