Network transcoder with seamless switching function

Naoki Kuwahara; Toshihiko Hata; Toshiharu Nozawa; Anthony Vetro

doi:10.1117/12.570570

25 October 2004 Network transcoder with seamless switching function

Naoki Kuwahara, Toshihiko Hata, Toshiharu Nozawa, Anthony Vetro

Proceedings Volume 5600, Multimedia Systems and Applications VII; (2004) https://doi.org/10.1117/12.570570
Event: Optics East, 2004, Philadelphia, Pennsylvania, United States

Abstract

In a surveillance system with a huge number of cameras, the number of videos to be transmitted and displayed is usually restricted by network bandwidth and the resource of display terminal. Given that the source video is captured at high quality, a network transcoder is used to send video with lower data rate as the default for ordinary scenes, while only extraordinary or unusual scenes are sent with higher quality. With such a scenario, it is necessary to switch from a low quality version of the video to a higher quality video with low latency and in a seamless manner. This paper presents a network transcoder that is able to change the content and the quality of videos seamlessly and with low latency. The novelty of the proposed scheme is possible to change the quality and camera in the same session. Moreover, this paper describes an RTSP enhancement that enables this dynamic transcoding function. Finally, an evaluation of the results is provided.

Citation Download Citation

Naoki Kuwahara, Toshihiko Hata, Toshiharu Nozawa, and Anthony Vetro "Network transcoder with seamless switching function", Proc. SPIE 5600, Multimedia Systems and Applications VII, (25 October 2004); https://doi.org/10.1117/12.570570

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