HTML 5

http://www.w3schools.com/html5/tag_video.asp
Code:
<video src="movie.ogg" controls="controls">
    your browser does not support the video tag
    </video>
XHTML / HTML

http://de.selfhtml.org/html/multimedia/objekte.htm

Code:
  <object classid="CLSID:D27CDB6E-AE6D-11cf-96B8-444553540000" width="600" height="400"
          codebase="http://active.macromedia.com/flash2/cabs/swflash.cab#version=4,0,0,0">
    <param name="movie" value="nibbles.swf">
    <param name="quality" value="high">
    <param name="scale" value="exactfit">
    <param name="menu" value="true">
    <param name="bgcolor" value="#000040">
    <embed src="nibbles.swf" quality="high" scale="exactfit" menu="false"
           bgcolor="#000000" width="600" height="400" swLiveConnect="false"
           type="application/x-shockwave-flash"
           pluginspage="http://www.macromedia.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash">
    </embed>
  </object>