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http://hdl.handle.net/10397/105702
Title: | Smartphone-assisted smooth live video broadcast on wearable cameras | Authors: | Li, J Peng, Z Xiao, B |
Issue Date: | 2016 | Source: | 2016 IEEE/ACM 24th International Symposium on Quality of Service : 20-21 June 2016, Beijing, China, 7590439 | Abstract: | Wearable cameras require connecting to cellular-capable devices (e.g., smartphones) so as to provide live broadcast services for worldwide users when Wi-Fi is unavailable. However, the constantly changing cellular network conditions may substantially slow down the upload of recorded videos. In this paper, we consider the scenario where wearable cameras upload live videos to remote distribution servers under cellular networks, aiming at maximizing the quality of uploaded videos while meeting the delay requirements. To attain the goal, we propose a dynamic video coding approach that utilizes dynamic video recording resolution adjustment on wearable cameras and Lyapunov based video preprocessing on smartphones. Our proposed resolution adjustment algorithm adapts to network condition changes, and reduces the overheads of video preprocessing. Due to the property of Lyapunov optimization framework, our proposed video preprocessing algorithm delivers near-optimal video quality while meeting the upload delay requirements. Our evaluation results show that our approach achieves up to 50% reduction in power consumption on smartphones and up to 60% reduction in average delay, at the cost of slightly compromised video quality. | Publisher: | Institute of Electrical and Electronics Engineers | ISBN: | 978-1-5090-2634-0 (Electronic) 978-1-5090-2635-7 (Print on Demand(PoD)) |
DOI: | 10.1109/IWQoS.2016.7590439 | Rights: | © 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The following publication J. Li, Z. Peng and B. Xiao, "Smartphone-assisted smooth live video broadcast on wearable cameras," 2016 IEEE/ACM 24th International Symposium on Quality of Service (IWQoS), Beijing, China, 2016, pp. 1-6 is available at https://doi.org/10.1109/IWQoS.2016.7590439. |
Appears in Collections: | Conference Paper |
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Xiao_Smartphone-Assisted_Smooth_Live.pdf | Pre-Published version | 963.74 kB | Adobe PDF | View/Open |
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