Making a Mobile Website for Palm Pre and various other Smartphones that allows video playback from a direct link.

*/filename.mp4

The problem I am running across is when clicking on the link to the video file. WebOS appears to try and load the Video Player but then gives the error.
"There was an error playing the file"

If I put the .mp4 file directly on the phone and try playing through the Video Player and works with no issue.

Is there specific html coding that is required in order to play the video from a direct source?

Any help would be greatly appreciated.
Thank You in Advance.