[MPlayer-users] Do I need cross compile some decoder when I cross compile mplayer?

[bytex]

I cross compiled mplayer to run it on arm board.
But failed on playing.
 
I think maybe I need cross compile some decoders.
 
Do I need cross compile some decoders when I cross compile mplayer?
Does mplayer contains the common decoders in its source code?
 
And how to use them? need I copy the decoders to arm board before mplayer running?
 
Maybe my question is too simple.
 
But I really need your help.
 
Thanks very much.