Scalable Video Delivery to Unicast
نویسندگان
چکیده
This project that deals with the proxy gateway and unicast client of the larger Scalable Video Delivery project. The aim of the project is to deliver video to heterogeneous clients using only one video stream. This possible using a layered multi-wavelet codec that allows a video stream to be encoded, divided and distributed using multicast. A multicast method of delivery would mean that the client can control the amount of stream it receives and hence the video quality without the server having to transcode or modify the strems it sends out. However, because there are devices that cannot receive multicast data, e.g., handheld devices or PDAs, a proxy gateway was developed to receive the multicast stream and retransmit them in a unicast manner. The proxy gateway, because it is developed primarily to support the low-powered handheld devices, also performs buffering and other actions that may require amounts of memory which handheld devices do not have. This project is now in its final stage and the proxy gateway and unicast handheld-based client are now under performance testing.
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