A novel robust video transmission scheme for error resilient transcoding

Authors:
Zhang Xinchen;Huang Mei
Affiliations:
College of Physical Science and Technology, Central China Normal University, Wuhan, China;Hubei Institute of Forestry Exploration and Design, Wuhan, China
Venue:
IITA'09 Proceedings of the 3rd international conference on Intelligent information technology application
Year:
2009

Citing 6
Cited 0

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Abstract

For video transmission over wireless or highly congested networks, vldeo transcoding is typically used to reduce the rate and change the format of the originally encoded video source to match network conditions and terminal capabilities. Error resilient video transcoding can insert error resilient tools in the compressed video to enhance error resilience of the video over wireless channels by increasing bit rate. This paper proposed a novel error resilient video transcoding and streaming transmission scheme specially designed for Mpeg2 to H.264 transcoded video to portable devices in wireless channeL Based on the rate-distortion models developed in this paper, an optimal transcoding marcoblock mode selection and bit allocation scheme is proposed. In order to improve the video quality in the presence of transmission error, this paper also investigated how to allocate redundant pictures more efficiently according to the content characteristics of the primary pictures. The experiment results demonstrated that the proposed transcoding scheme can enhance speed and improve the decode image quality, get better error resilience.