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[问与答] 用更高的码率压制一段视频，他相比原视频多出来码率作用是什么？

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假设我用手机录制了一段 400MB 的视频，然后我用 PR 把这段视频重新压制成分别为 200MB 400MB 800MB 的相同格式和分辨率的视频，那么这四段视频的清晰度大小顺序是什么？

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