控制在导入人形角色动画以进行重定向时，使用多少过采样。
人形角色重定向是指在导入时对动画重新采样。默认情况下，使用导入文件的采样率。在一些例外情况下，需要更高的采样率来确保原始帧之间的有效插值。除了过采样外，还可以通过减少关键点来减小最终生成的剪辑的大小。减少关键点不会将需要更紧密插值位置处的关键点删除。
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