step 2 : every post add below code
<div id="playerSpuurExoMyae">
</div>
<script type="text/javascript">
jwplayer('playerSpuurExoMyae').setup({
file :'http://cdn4.itn.lk/drama/knight_rider/knight_rider_20170616.mp4',
title:'YouHappy',
width:'100%',
aspectratio:'16:9',
autostart: 'false',
primary :'flash'
});
</script>