Design and implementation of multimedia repository system based on middle tier structure

Omni Media has become an important trend with the development of information services in the context of network convergence and screen integration. In such an environment, Internet interaction is no longer limited to the computer, users can also access Internet resources through wearable and other smart computing devices. This paper proposes a multimedia repository system, which is composed of client file upload module, task allocation core middle tier module of server side, file fragments merge module and media transcoding module. In section I, we comprehensively analyzed the current mainstream large file upload method based on the browser and discuss the features of each method. Then we proposed a combination of Ajax with XMLHttpRequest Level 2, File API and other technologies to achieve large media file segments upload in section II. In section III, we described the core task allocation middle tier module of server architecture which allows the system to receive media resources from various types of terminals and upload to the cloud server repository without size limit. Furthermore, we gave an example of completing the file upload and file fragments merge by using the core task allocation middle tier.