Remove White Space in Video DIV Surround

[ds_tx]

How can I get rid of extra white space in DIV surrounding video?

In DIV surrounding video, browser is adding a bunch of white space between bottom of video and text description with link to webpage.

See - http://dstall.com/Test.html and http://dstall.com/Test.txt

Note: Example on left uses iframe instead of video tag, but loads video way too wide, then adds a scroll bar beneath which must be used to center video in frame. Is there a fix for that? bc in MediaWiki browser does not add white space below video as seen in example above, so if video were centered without scroll bar, I would need no fix for white space.