I am not able to reproduce the issue. If I use the following HTML and paste it in a Windows Store app or save it as a HTML page, I am able to see the expected behavior (the video tag has the red color background). The only thing I have removed from your
code above is the JScript references as well as the actual source of the video to ensure that the tag does not load any video and shows the red background.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>App1</title>
</head>
<body>
<video controls width="400" height ="300" style="background-color:red;"></video>
</body>
</html>
@prashantphadke || Windows Store Developer Solutions #WSDevSol || Want more solutions? See our blog! http://aka.ms/t4vuvz