On-demand Segmentation and Proxy Buffer Provisioning for Scalable and Interactive Video Streaming Scheme

Dividing a video into many segments and caching a certain amount of prefix data at the proxy from these segments, one prefix from each segment, are very useful mechanisms to provide interactive playback modes to the clients in a scalable streaming system. However, creating the appropriate segments and choosing an appropriate segmentation algorithm are daunting tasks. In this paper, we have proposed an on demand segmentation mechanism for scalable and interactive streaming systems. We propose that the proxy start with a non-segmented video and with a single prefix. The proxy then gradually divides a video into many segments as it receives more interactive playback requests and caches the prefixes of these new segments. Consequently, segmentation and prefix caching at the proxy are done on demand and user´s playback pattern determines the appropriate size and the position of a segment in a video. We provide simulation results to show the effectiveness of our proposed schemes