将uc手机浏览器缓存下来的视频变成mp4格式的具体方法及步骤如下：
工具/原料：UC浏览器，视频
1、首先，打开手机，然后在手机桌面打开UC浏览器，接着点击页面中间的图标。
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2、接着点击我的视频。
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https://iknow-pic.cdn.bcebos.com/d1160924ab18972b3f57d277e8cd7b899e510a1a"/>
3、然后点击已缓存的视频。
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4、接着长按该视频，然后点击打开目录。
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https://iknow-pic.cdn.bcebos.com/5fdf8db1cb134954a2a53ad9584e9258d0094ad0"/>
5、接着长按视频，等到对话框出现，点击更多，接着再点击重命名。
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https://iknow-pic.cdn.bcebos.com/5ab5c9ea15ce36d3b1bb518d34f33a87e850b1d4"/>
6、最后将后缀名更改为MP4即可。
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