meridian MobiStream

Perceptual Video Streaming with Virtual Channels

is a video streaming system that exploits the 'perceptual' value in the video content and the characteristics of the link layer and physical layer channels to enable error-resilient video streaming over Wide-area Wireless Networks (WWANs). MobiStream introduces the concept of Virtual Channels to virtualize the link and physical layer channels in cellular environments. Virtual channels depart from the traditional observation of the best-effort cellular data channels, to offer video applications partial control of these channels.

MobiStream introduces yet another concept, perceptual slice-structured video coding wherein video frames are partitioned into number of small (independently decodable) slices, then prioritized, and reconstructed according to their perceptual (visual) usefulness. The system offers a number of other enhancements: slice-based coding, multiple description video coding, low-delay inter-frame and intra-frame slice interleaving, dynamic unequal error protection, and smart slice-scheduling for efficient and error-resilient video streaming over 3G cellular links. Our experimentation using real traces from a commercial CDMA 2000 EvDO network demonstrates substantial benefits to end-user experience using MobiStream. Joint collaboration with NEC Labs.

->  Overview How MobiStream works?
->  Evaluation Commercial cellular network 
->  Screenshots Screenshots from MobiStream
->  Source Code H.264 codec details

MobiStream project