Dynamic control of video quality for AVS

In the Adaptive Video Streaming (AVS), a server stores multiple video quality versions for each chunk in a video file, and a client takes decision which chunk quality to download in order to adapt to changing channel conditions. This paper presents a simple and effective algorithm for video quality selection and buffer control, which is based only on the current state of the client´s playback buffer. The performance of the algorithm is analyzed regarding three important QoE measures and the tradeoff between them: 1) likelihood of play-out interruptions and video packet loss, 2) fraction of video watched in high quality, and 3) amount of fluctuations in video quality.