A Dynamic Adaptive Bit-rate Switching Algorithm for HTTP Streaming

doi:10.3969/j.issn.1006-2475.2017.04.006

Abstract

Abstract: Adaptive video streaming is an important mechanism for improving the performance of video delivery over mobile networks. By dynamically switching between different bit-rate versions of the same video, the mechanism can compensate for and adapt to the ever-changing network conditions. With limited client buffer and varying network， this paper proposes a new dynamic bit-rate switching algorithm. The proposed algorithm considers the following metrics in order to select different bit-rate versions of the video segment to improve the quality of video playback, which are: client buffer, excess video frames dropped per second, and available network bandwidth. It has been evaluated in dynamic real-time Internet environment by using the wired and wireless network. Experiment results show that the proposed algorithm can provide a good user experience in the dynamic network environment.
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Key words: , adaptive video streaming； client buffer； available bandwidth； frame loss rate； bit-rate switching

CLC Number:

TP391

WANG Cang-ling, LI Ze-ping. A Dynamic Adaptive Bit-rate Switching Algorithm for HTTP Streaming[J]. Computer and Modernization, 2017, 0(4): 27-31,37.

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