Cross-device Videoconferencing based on Adaptive Multimedia Streams
Pedro RodrÃ­guez, Alvaro Alonso, JoaquÃ­n SalvachÃºa, Enrique Barra, Javier CerviÃ±o
Journal of Multimedia Processing and Technologies, Vol. 4, No. 1, 2013.
DOI: 
Link: http://www.dline.info/jmpt/fulltext/v4n1/2.pdf
Abstract:
The increase in CPU power and screen quality of todays smartphones as well as the availability of high bandwidth wireless networks has enabled high quality mobile videoconferencing never seen before. However, adapting to the variety of devices and network conditions that come as a result is still not a trivial issue. In this paper, we present a multiple participant videoconferencing service that adapts to different kind of devices and access networks while providing an stable communication. By combining network quality detection and the use of a multipoint control unit for video mixing and transcoding, desktop, tablet and mobile clients can participate seamlessly. We also describe the cost in terms of bandwidth and CPU usage of this approach in a variety of scenarios.