本任务的主要目标是让大家对数字媒体技术的含义与特点有基本的了解，能够初步认识数字媒体信息编码、数据压缩、数字存储、流媒体等概念，然后讨论数字媒体的不同类型，并进一步熟悉流媒体的应用领域。

The main objective of this task is to give you a basic understanding of the meaning and characteristics of digital media technology, to have a preliminary understanding of digital media information coding, data compression, digital storage, streaming media and other concepts, and then discuss the different types of digital media, and further familiarize yourself with the application field of streaming media.

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