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Proceedings Paper

Rate control for non-real-time video encoding
Author(s): IMing Pao; Ming-Ting Sun
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Paper Abstract

In streaming video applications, video sequences are encoded off-line and stored in a server. Users may access the server over a constant bit-rate channel such as Public Switched Telephone Network (PSTN) or Integrated Service Digital Network (ISDN). Examples of the streaming video are video on demand, archived video news, and non-interactive distance learning. Before the playback, part of the video bit-stream is pre- loaded in the decoder buffer to ensure that every frame can be decoded at the scheduled time. For these streaming video applications, since the delay (latency) is not a critical issue and the whole video sequence is available to the encoder, a more sophisticated bit-allocation scheme can be used to achieve better video quality. During the encoding process for streaming video, two constraints need to be considered: the maximum pre-loading time that the video viewers are willing to accept and the physical buffer-size at the receiver (decoder) side. In this paper, we propose a rate- control scheme that uses statistical information of the whole video sequence as a guidance to generate better video quality for video streaming involving constant bit-rate channels. Simulation results show video quality improvements over the regular H.263 TMN8 encoder.

Paper Details

Date Published: 28 December 1998
PDF: 9 pages
Proc. SPIE 3653, Visual Communications and Image Processing '99, (28 December 1998); doi: 10.1117/12.334701
Show Author Affiliations
IMing Pao, Univ. of Washington (United States)
Ming-Ting Sun, Univ. of Washington (United States)

Published in SPIE Proceedings Vol. 3653:
Visual Communications and Image Processing '99
Kiyoharu Aizawa; Robert L. Stevenson; Ya-Qin Zhang, Editor(s)

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