I think your issue is related to the file path. I just changed the url with the url given in
w3c examaple[
^], checked your code - and it worked.
So check the file path of the video. And you don't have to use
<object></object>
&
<embed></embed>
within the
<video></video>
, only
<source></source>
would do the job for you.
-KR