Real-time video and audio over low bandwidth communication channels

Obtaining a real-time synchronized video/audio stream through a low bandwidth network is a challenging task. In this paper we address several problems that arise in developing such an application and provide possible solutions to them. These problems include: video related issues such as deciding on the quality of the video and, setting the video parameters to obtain that quality; audio issues such as reducing the latency in accessing the audio data; and network-related issues such as deciding between TCP and UDP. When we integrate the video, the audio, and the communication protocol, we face a di erent set of problems to obtain lip-synchronization. We propose a three-step solution to achieve almost-perfect lipsynchronization.