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我试图了解 MPEG-2 是如何工作的，所以我可以完成一个基于它的项目。首先我想了解MPEG-2。我想知道为什么总 Mbit/s 在 1995 年到 2005 年间下降得非常快？它从 6 Mbit/s 变为 2 Mbit/s。这怎么可能？
