How can I run the MPlayer I installed?

How can I run the MPlayer I installed? -- Linux general technology-Linux technology and application information. For details, refer to the following section. I have tar-xjvf,./configure, make, make install, and no exception has occurred. Use whereis mplayer to get the following information: mplayer:/usr/local/bin/mplayer

Run/usr/local/biin/mplayer to get a series of hotkeys like windows.

But I don't know how to run it, and whether I have installed it or not, there are other problems. At the beginning, I felt a little silly, but no one around me understands it, who can help solve this problem? Thank you.