Youtube

<div class="responsive-video">
    <iframe width="853" height="480" src="//www.youtube.com/embed/XcpOsJQXcx4?list=UUIkFV7_2tEhhEhh1NkkwTUw" frameborder="0" allowfullscreen></iframe>
</div>

Vimeo

<div class="responsive-video">
    <iframe src="//player.vimeo.com/video/106249100" width="1920" height="1080" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe> 
</div>

<Embed>

<div class="responsive-video">
     <embed  src="/portals/0/movie.swf" type="application/x-shockwave-flash" allownetworking="all" allowfullscreen="true" allowscriptaccess="always" wmode="Opaque"></embed>
</div>

<Video>

<div class="responsive-video">
    <video width="1920" height="1080"  controls="true">
    <source src="/portals/0/movie.m4v" type="video/mp4"></source>
    <source src="/portals/0/movie.ogv" type="video/ogg"></source>
    <source src="/portals/0/movie.webm" type="video/WebM"></source>
    Your browser does not support the video tag. </video>
</div>