HTML5下video右键禁用-禁止右键下载视频

<script language="javascript" type="text/javascript" src="https://code.jquery.com/jquery-1.7.1.min.js"></script>
<script>
    $(document).ready(function(){
    $('#video').bind('contextmenu',function() { return false; });
    });
</script>

<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
<script type="text/javascript">
var myVideo=document.getElementById("video1");
$('#video1').bind('contextmenu',function() { return false; });
function playPause()
{ 
if (myVideo.paused) 
  myVideo.play(); 
else 
  myVideo.pause(); 
} 

function makeBig()
{ 
myVideo.width=560; 
} 

function makeSmall()
{ 
myVideo.width=320; 
} 

function makeNormal()
{ 
myVideo.width=420; 
} 
</script>