Ben otomatik olarak (belki regex?) PHP kullanarak verimli embed kodunu yeniden boyutlandırmak

İşte embed kodu bir örnek:

<object width="500" height="350">
  <param name="movie" value="http://www.megavideo.com/v/"></param>
  <param name="allowFullScreen" value="true"></param>
  <embed src="http://www.megavideo.com/v/" 
     type="application/x-shockwave-flash" 
     allowfullscreen="true"
     width="500" height="350">
  </embed>
</object>