Please help me and very urgent for me

Hello,
I have a problem with flash Action Script that is.I make a video file into flash swf file by using import video from flash and I convert into swf file the problem is after I convert into swf file the movie is playing in my local system at the
time the same file I put the swf file in server the moving is not playing I can not able to understand what the problem is so please kindly help me.