We are closing.
DemoHere, the player will completely fill its parent, adjusting its aspect ratio when necessary.
<div id="fixed_height_container">
<video class="sublime" data-settings="uid:demo-responsive-fill-resizing; autoresize:fill;" title="Demo: Responsive integration, Fill resizing" poster="http://media.sublimevideo.net/vpa/ms_800.jpg" width="640" height="360" preload="none" style="display:none">
<source src="http://media.sublimevideo.net/vpa/ms_360p.mp4" />
<source src="http://media.sublimevideo.net/vpa/ms_360p.webm" />
</video>
</div>
#fixed_height_container {
height:400px;
}