A Scalable Mobile Live Video Streaming System Based on RTMP and HTTP Transmissions

In this paper we introduce a scalable 3G live streaming system. It has a mobile client which captures and publishes video streams to a media server. Then the server broadcasts and archives received streams simultaneously. Our system uses flash technology in the end-user development and thus we get very wide device support. By applying self-adaptive HTTP and RTMP transmissions, our system can keep working well under mobile network environment with limited time delay. Our experiments showed that even on 3G mobile phones the live streaming time delay was no more than 5 seconds when RTMP transmission was used. As videos contents are very private and sensitive to users, we also built an authorization service in our system to ensure the security of transferred contents.