Check the plugin your installed or not by writing
about:plugins
on its url for mozilla firefox and
chrome://plugins/
on Google Chrome
see this type of similar
thread1[
^]
thread2[
^]
or check your browser support for HTML5-
The HTML5 test – Video[
^]
or
here if video plays well means there is any other coding problem.
or you can use this open source
HTML5 Video Player[
^] in your project that supports all browser