Proximate control stream assisted video transcoding for heterogeneous content delivery network

• Published in: Proceedings - International Conference on Image Processing pp. 2552 - 2555
• Main Authors: Xuebin Zhang, Yuan Li, Jiangpeng Li, Kai Zhao, Tong Zhang
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.10.2014
• Subjects: control stream; H.264/AVC; Indexes; Streaming media; Syntactics; Transcoding; Vectors; Video sequences
• ISSN: 1522-4880
• DOI: 10.1109/ICIP.2014.7025516

Video transcoding can be used to facilitate video streaming in content delivery network. A concept of control stream assisted transcoding has been recently proposed aiming to reduce transcoding computational complexity at the cost of data storage/transmission overhead, and the control stream is obtained by directly removing the residual information from the target video bitstream of transcoding. However, it is subject to relatively significant storage/transmission overhead, and more importantly does not well match to the increasingly heterogeneous networking environment with varying computation/storage/transmission resources at different nodes. This work presents a proximate control stream assisted transcoding design strategy that can reduce the control stream size and enable a large storage/transmission vs. computational complexity trade-off design space. Experiments demonstrate its effectiveness and noticeable advantages over other alternatives including simulcast and SVC (scalable video coding).