Title :
Content-aware streaming of lecture videos over wireless networks
Author :
Liu, Tiecheng ; Choudary, Chekuri
Author_Institution :
Dept. of Comput. Sci. & Eng., South Carolina Univ., Columbia, SC, USA
Abstract :
Video streaming over wireless networks becomes increasingly important in a variety of applications. To accommodate the dynamic change of wireless networks, quality of service (QoS) scalable video streams need to be provided. This paper presents a system of content-aware wireless streaming of lecture (instructional) videos for e-learning applications. A method for real-time analysis of instructional videos is first provided to detect video content regions and classify video frames, then a \´leaking video buffer" model is applied to dynamically compress video streams. In our content-aware video streaming, instructional video content is detected and different QoS are selected for different types of video content. Our adaptive feedback control scheme is able to transmit properly compressed video streams to video clients not only based on wireless network bandwidth, but also based on video content and the feedback of video clients. Finally, we demonstrate the scalability and content awareness of our system and show experimental results of two lecture videos.
Keywords :
data compression; distance learning; interactive video; quality of service; radio networks; video coding; video streaming; QoS; adaptive feedback control; content-aware video streaming; e-learning; leaking video buffer model; lecture videos; quality of service; real-time analysis; video compression; video streaming; wireless networks; Adaptive control; Bandwidth; Electronic learning; Feedback control; Leak detection; Programmable control; Quality of service; Streaming media; Videos; Wireless networks;
Conference_Titel :
Multimedia Software Engineering, 2004. Proceedings. IEEE Sixth International Symposium on
Print_ISBN :
0-7695-2217-3
DOI :
10.1109/MMSE.2004.38