Scalable Coding and Wireless Streaming of Lecture Videos for Mobile Learning

Abstract

Mobile learning demands real-time transmission of lecture videos to mobile users over wireless networks. However, wireless video streaming is challenging due to the dynamic change of network bandwidths and the variety of mobile devices. In this paper, we present a mobile learning system that incorporates semanticlevel scalable video coding and wireless video streaming. The lecture videos are encoded into different quality levels with different compression ratios. We demonstrate the effectiveness of our mobile learning system with the lecture videos recorded in real classrooms.

Intelligent Adaptation Model Based on MPEG-21 Framework

“…RELATED WORK Marinelli and Stevens [5] focus on customization; they propose segmenting a video lesson into small chunks, which are stored on a video server. When a student access to the video lesson, depending on his/her choices, the most appropriate video chunks are streamed.…”