学术报告:Real-Time Video Streaming Using Randomized Expanding Reed–Solomon Code

【主讲人】周超

【时 间】2014年3月6日(周四)上午9:30

【地 点】北京大学计算机所大楼 106报告厅(中关村北大街128号计算机所大楼)

报告题目:Real-Time Video Streaming Using Randomized Expanding Reed–Solomon Code

作者:Jimin Xiao, Tammam Tillo, Yao Zhao

摘要:The shared paper has been published in T-CSVT 2013. In this talk, I will introduce a randomized expanding Reed-Solomon (RS) code for real-time video streaming.

As we known, Forward error correction (FEC) codes have been widely studied to protect streamed video over unreliable networks. Typically, enlarging the FEC coding block size can improve the error correction performance. For video streaming applications, this could be implemented by grouping more than one video frame into one FEC coding block. However, in this case, it leads to decoding delay, which is not tolerable for real-time video streaming applications.

To solve this dilemma, a real-time video streaming scheme using randomized expanding Reed–Solomon (RS) code is introduced in this talk. In this scheme, the RS coding block includes not only the video packets of the current frame, but could also include all the video packets of previous frames in the current group of pictures. At the decoding side, the parity-check equations of the current frame are jointly solved with all the parity-check equations of the previous frames. Since video packets of the following frames are not encompassed in the RS coding block, no delay will be caused for waiting for the video or parity packets of the following frames both at encoding and decoding sides.

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