Delivering real-time video over the Internet is an important component of many Internet multimedia applications. Transmission of real-time video has bandwidth, delay, and loss requirements. However, the current Internet does not offer any quality of service (QoS) guarantees to video transmission over the Internet. Designing protocols and mechanisms for Internet video transmission poses many challenges.
In our works, we focus on two aspects of real-time video streaming, namely, congestion control and error control. Till now, we have proposed a queuing delay based congestion control algorithm adopting control theory, which achieves higher bandwidth usage and video quality. We have also proposed a distortion optimized UEP scheme based on an expanding window FEC framework.
We are now working on Linphone, an open source VOIP software, and our aim is to build a HD real-time video application on smart TV.