Content-adaptive wireless streaming of instructional videos
| Autor: | Chekuri Choudary, Tiecheng Liu |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Multimedia
Computer Networks and Communications Wireless network Computer science Quality of service ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Video processing computer.file_format computer.software_genre Smacker video Video compression picture types Uncompressed video Hardware and Architecture Video tracking Media Technology computer Software |
| Zdroj: | Multimedia Tools and Applications. 28:157-171 |
| ISSN: | 1573-7721 1380-7501 |
| DOI: | 10.1007/s11042-006-6140-3 |
| Popis: | Video streaming over wireless networks is becoming increasingly important for a variety of applications. To accommodate the dynamic change of wireless network bandwidths, Quality of Service (QoS) scalable video streams need to be provided. This paper presents a system of content-adaptive streaming of instructional (lecture) videos over wireless networks for E-learning applications. We first provide a real-time content analysis method to detect and extract content regions from instructional videos, then apply a "leaking-video-buffer" model to adjust QoS of video streams dynamically based on video content. In content-adaptive video streaming, an adaptive feedback control scheme is also developed to transmit properly compressed video streams to video clients not only based on network bandwidth, but also based on video content and the preferences of users. Finally, we demonstrate the scalability and content adaptiveness of the proposed video streaming system with experimental results on several instructional videos. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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