| Summary: | 碩士 === 國立中正大學 === 通訊工程研究所 === 104 === With the increasing popularity of Internet technology, network services have been deep into our daily life, multimedia audio and video streaming service is one of them. In order to provide appropriate audio and video streaming services for heterogeneous platforms, the technology of cloud computing is used to deliver real-time transcoding operations to the cloud server to provide the requirements of different terminal devices. Due to the actual network structure, the cloud and the client The transmission between the need to go through the core network distance, if there are multiple users to watch the same video clips at the same time, the cloud will transcode and transmit multiple copies of the same audio and video clips, causing the burden of the cloud and the network bandwidth of the waste, So we through the action edge of the concept of computing, in the vicinity of the client to store audio and video transcoding fragments to provide multi-user viewing.
In this paper, the WAN (Wide Area Network) bandwidth of the cloud to the core network and the bandwidth of the core network to the LAN (Local Area Network) of the client are discussed. Combined with the concept of action edge computing to store transcoded audio and video clips, and the concept of multicast as a way to reduce the bandwidth of the bandwidth of the bandwidth burden. In the core network and the client to join Media Proxy, to store transcoded video clips and produce MPD list. The client can choose the image quality according to its own bandwidth, save the time of return bandwidth, and shorten the time when the client bandwidth changes, so that the user has a better experience.
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