Mplayer problems, urgent...

Mplayer problems, urgent... -- Linux general technology-Linux technology and application information. For details, refer to the following section. The following code is displayed when I enter Mplayer on the terminal. I don't know what it means.

MPlayer SVN-r31027-4.4.2 (C) 2000-2010 MPlayer Team
Usage: mplayer [options] [url | path/] filename

Basic options: (complete list in the man page)
-Vo Select video output driver ('-vo help' for a list)
-Ao Select audio output driver ('-ao help' for a list)
Vcd :// Play (S) VCD (Super Video CD) track (raw device, no mount)
Dvd :// Play DVD title from device instead of plain file
-Alang/-slang select DVD audio/subtitle language (by 2-char country code)
-Ss Seek to given (seconds or hh: mm: ss) position
-Nosound do not play sound
-Fs fullscreen playback (or-vm,-zoom, details in the man page)
-X -Y Set display resolution (for use with-vm or-zoom)
-Sub Specify subtitle file to use (also see-subfps,-subdelay)
-Playlist Specify playlist file
-Vid x-aid y select video (x) and audio (y) stream to play
-Fps x-srate y change video (x fps) and audio (y Hz) rate
-Pp Enable postprocessing filter (details in the man page)
-Framedrop enable frame dropping (for slow machines)

Basic keys: (complete list in the man page, also check input. conf)
<-Or-> seek backward/forward 10 seconds
Down or up seek backward/forward 1 minute
Pgdown or pgup seek backward/forward 10 minutes
<Or> step backward/forward in playlist
P or SPACE pause movie (press any key to continue)
Q or ESC stop playing and quit program
+ Or-adjust audio delay by +/-0.1 second
O cycle OSD mode: none/seekbar + timer
* Or/increase or decrease PCM volume
X or z adjust subtitle delay by +/-0.1 second
R or t adjust subtitle position up/down, also see-vf expand

*** See the man page for details, FURTHER (ADVANCED) options and keys ***