| 摘要 |
The present invention involves a new system and process for streaming delivery of dynamically scalable media content over a network, such as, for example, the Internet or a wireless network, while automatically accounting for both fluctuating network bandwidth and packet loss. A system of rate-distortion based packet selection and organization is used to maximize the quality of streamed media files that have been encoded using any conventional scalable encoder. Media file quality is maximized for available bandwidth by scoring packets comprising encoded media files based on their contribution to the quality of a reconstructed media file, then preferentially transmitting those packets having the highest scores. In addition, where packets are lost during transmission, those packets that will provide the maximum rate-distortion decrease, are preferentially retransmitted prior to other lost packets which, if transmitted in the same time slot, would provide a lesser rate-distortion decease.
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