Recently, mobile video becomes extremely hot as witnessed by the boost of sales of video-capable portable devices. In this project, we study a specific together-viewing video application in which a higher (doubled) resolution video is played back across screens of two mobile devices placed side by side. Our motivation is not only to let users enjoy higher quality video through collaboration, but also make it natural for them enjoy it together, which facilitates discussion and consolidates the friendship. Since the marketing target is young couples, it is also called "Lover's Phone".
This new scenario imposes real-time, synchronous decoding and rendering requirement which is difficult to achieve because of the intrinsic complexity of video and the resource constraints such as processing power, battery life of mobile devices. We develop a novel, efficient collaborative half-frame decoding scheme and design a tightly coupled collaborative system architecture that aggregates resources of both devices to achieve the task. We have prototyped such application using commercially off-the-shelf mobile devices.
Visiting students that worked on this project:
- Wenfeng Li, Arizona Statue University, U.S.)
- Yanlin Li, Tianjin University, China)
- Feng Hu, Wuhan University, China)
- Dayong Tao, Nanyang Tech University, Singapore)
- Guobin Shen, Yanlin Li, Chunyi Peng, and Yongguang Zhang, MobiUS: A Together-Viewing Mobile Video Experience, June 2007