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The frame rate is variable, not fixed. Every time the screen is updated, one frame is recorded. If the screen is not updated, no frame is recorded. Therefore there is no setting for the frame rate, because it's determined by how quickly the system updates the screen.
非常值得注意的是,分析结果的准确性与如何录制视频有较大关联性。以android为例,通常使用
adb shell screenrecord
录制出来的视频,fps是不稳定的。而这种不稳定很可能带来非常巨大的误差,绝对不应该被忽视。
如上述例子,同一个场景下,不同的录制方法导致的误差达到了3s之多。
目前推荐两种视频录制方式:
对于已有视频,请参考:
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