JWplayer error ‘Video not found or access denied’

i am using JWplayer to play audio and video files in my exe.
this is my html file:

<script type="text/javascript" src="jwplayer.js"></script> 	
<script type="text/javascript"> 	
      $(document).ready(function () {
              file: "SampleVideo.mp4",
              flashplayer: "player.swf",
<div id="PlayMP4Video">                            

it play both mp3 and mp4 in browser. But after generating exe with chromium engine it only playing mp3. Mp4 files are not playing and it gives an error " Video not found or access denied ".
pls help me guys…