Neste exemplo, vamos usar videos do youtube
1-Ir buscar ao youtube, o codigo embed<object width="425" height="344"> <param name="movie" value="http://www.youtube.com/v/rbuiZetQYfA&hl=pt-br&fs=1&"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/rbuiZetQYfA&hl=pt-br&fs=1&" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object>
2-Modificar o codigo embebed- 2.1
Mudar os valores de width e height para 1- 2.2
Acrescentar isto no teu URL &autoplay=1&loop=1
Resultado:<embed src="http://www.youtube.com/v/rbuiZetQYfA&hl=en&autoplay=1&loop=1"
No fim fica assim:<object width="1" height="1"> <param name="movie" value="http://www.youtube.com/v/rbuiZetQYfA&hl=pt-br&fs=1&"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/rbuiZetQYfA&hl=pt-br&fs=1&
&autoplay=1&loop=1
" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="1" height="1"></embed></object>