HTML 5 + <object> + <embed>
<video width="" height="" controls="controls">
<source src="movie.mp4" type="video/mp4" />
<source src="movie.ogg" type="video/ogg" />
<source src="movie.webm" type="video/webm" />
<object data="movie.mp4" width="" height="">
<embed src="movie.swf" width="" height="" />
</object>
</video>