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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Hong-Jyh Chiou Yuh-Ruey Lee Chia-Wen Lin |
| Copyright Year | 2004 |
| Description | Author affiliation: Dept. of Comput. Sci. & Inf. Eng., Nat. Chung Cheng Univ., Chiayi, Taiwan (Hong-Jyh Chiou; Yuh-Ruey Lee; Chia-Wen Lin) |
| Abstract | Transmitting video data over wireless networks can be very unreliable due to packet loss, leading to serious video quality degradation which is annoying to human perception. The error due to lost packets not only affects the quality of current frame, but also propagates to subsequent frames due to the motion compensation technique used in standard video codecs. Adding error-resilience to video bitstream for robust video delivery to users thus becomes a very important issue. In this work, we propose a two-pass transcoding scheme for enhancing the capability of error-resilience in the media gateway of a three-tier streaming system. The transcoder can adapt intra-refresh rate according to a channel's packet loss rate, hence protect the most important MBs subjected to packet loss. Experimental results show that the proposed method can effectively mitigate the error propagation due to packet loss and improve the video quality significantly. |
| Sponsorship | IEEE Circuits and Syst. Soc |
| File Size | 321156 |
| File Format | |
| ISBN | 078038251X |
| DOI | 10.1109/ISCAS.2004.1328862 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2004-05-23 |
| Publisher Place | Canada |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Transcoding Streaming media Propagation losses Wireless networks Degradation Humans Motion compensation Code standards Video codecs Robustness |
| Content Type | Text |
| Resource Type | Article |
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