I can't find an answer to this question anywhere. Somebody else asked a similar question: ( Facebook Timeline Flash Embed Dimensions ) but it wasn't really answered satisfactorily.
I have a url that I embed on the news feed. It has these open graph tags:
<meta property="og:video:height" content="393" />
<meta property="og:video:width" content="386" />
When I post it on the news feed, it is sized correctly:
http://screencast.com/t/9h6P4Z5WQt
when I post it on the timeline, it is all wrong, almost half of the thumbnail and video is clipped, and there is clearly enough width available to display it properly.
http://screencast.com/t/i1zk74IY
I can't find documentation on this anywhere.