请问怎么使用，它写的那些方法我翻译过来一方面有点语病，二方面则是知识不足了，如下：
Usage
Make sure you have FFmpeg installed. Put to or slicing_copy.lua~/.config/mpv/scripts/~/.mpv/scripts/ directory to autoload the script or load it manually with .--script=<path>
Press first time to mark the start of the fragment. Press it again to mark the end of the fragment and write it to the disk. Press to clear the fragment. Press to toggle audio capturing (default on).cCa
Logs can be found in console (press to open and to close by default), which might contains something useful.~esc | 
