可以利用PR软件把彩色视频变成黑白效果，具体操作方法如下：
打开PR软件，建立一个项目，然后进入到P的操作界面。
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2.进入到P的操作界面后，返回电脑桌面，把需要加工的视频素材直接拖拽到时间轴的序列面板里。
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3.把视频成功导入后，视频会自动显示在序列面板的视频轨道中，这时可以看到，当前的视频画面是彩色的，如下图所示。
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4.接着，在右边的搜索栏中输入“黑白”关键词，输入后会在下面显示出“黑白”效果的选项，如下图所示。
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5.找到“黑白”效果后，用鼠标点击“黑白”这个选项拖向视频轨道中的视频里。
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6.最后返回视频播放可以发现，视频就变成黑白效果的了。如下图所示。
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