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Electrical and Computer Engineering

 ECE Distinguished Lecture Series

Bringing Internet Video to Prime Time

 Hui Zhang (image)  
Hui Zhang
Co-Founder and Chief Scientist
Professor of Computer Science
Carnegie Mellon Univeristy 
After long anticipation, Internet Video is finally going prime time. Today, Youtube and Netflix are among the most popular sites on the Internet; Olympics, World Cup, Presidential Inauguration, and world's most important events are broadcast live on the Internet; consumers can watch HBO, ESPN, and the world's premium video content over the Internet any time, any where, and on any device such as PC, Television, smart phone, and iPad. With this growth comes higher demand on the infrastructure, higher user expectation for quality, and the need to form profitable long-lasting business around Internet video. Conviva builds and operates a video optimization platform designed to address the challenges of large scale and high quality video delivery. We argue that (a) accurate viewer centric measurement is essential to optimizing video quality, and (b) we will achieve the best results only with a real-time control plane decoupled from the data plane that has a view of the entire audience and can control the delivery at an individual viewer level. In addition, we will share some of the findings from our analysis, which shows that a large portion of the audience experiences quality problems on a regular basis and that quality does impact viewer engagement. We will also share some of the experience we have gained through deploying this platform across a number of premium video sites. 

Biography of Hui Zhang
As a researcher, Zhang has worked in the area of Internet Quality of Service (QoS), video streaming, network control, and Internet architecture. As part of his Ph.D. thesis research at U.C. Berkeley, Hui Zhang was one of the principal designers and implementers of the Tenet Real-Time Protocol Suite, which was the first complete protocol suite that provided guaranteed real-time service across heterogeneous wide-area internetworks. At Carnegie Mellon, Zhang supervised Ion Stoica’s 2001 award-winning Ph.D. dissertation on Internet QoS. His End System Multicast (ESM) research group pioneered the overlay multicast architecture and developed the world’s first peer-to-peer live streaming system in 2002. The 2001 ESM paper won the SIGMETRICS Test-of-Time Award in 2011. In 2003, Zhang started the 100x100 Clean Slate Project and 4D Project, which were among the first to apply clean-slate methodology to Internet architecture research and led to initiatives such as Software Defined Networks. 

As an entrepreneur, Zhang co-founded Conviva with Ion Stoica. Conviva optimizes video quality for premium content properties such as HBO, ESPN3, ABC, CBS, Fox. Conviva’s technology has powered some of the world’s largest on-line events such as Olympics, FIFA World Cup, NCAA College Basketball March Madness, Major League Baseball, and Academy Awards. Zhang also served as the Chief Technology Officer of Turin Networks from 2000 to 2003. Turin Networks was merged with Force 10 Networks and acquired by Dell in 2010. 

Zhang is an ACM Fellow. He was awarded the Alfred Sloan Fellowship in 2000, the National Science Foundation Career Award in 1996, and the Finmeccanica Chair in Computer Science at CMU from 1998 to 2001. 

Zhang received a bachelor’s degree from Beijing University, a master’s degree from Rensselaer Polytechnic Institute, and a Ph.D. in computer science from the University of California, Berkeley. 




Wednesday, November 21, 2012
12:00 p.m. - Duncan Hall 1049

This event is open to the public.