Red5 - Flashlite video stream problem

   I have problem with the application i created.  I have a red5 server streaming prerecorded flv videos.  the client is the mobile phones web browser( flash lite 3.0 enabled ).  The video is choppy like around every 2-3 seconds the video chops. I tried to use my FMS and using the same flv video file to be played and it works well. No video chopping or any problem occured.  When I switched back to red5 got again the problem. I wonder why is it the problem occured when I used the Red5 server.  Hoping for your great help.

Thanks,

Brikz