When I embed 100 Riffs (A Brief History of Rock N' Roll) in a Twitter Bootstrap container with FitVids.js for responsive resizing:
<div class="span12" id="video">
<iframe src="https://player.vimeo.com/video/43426940?title=0&byline=0&portrait=0" width="500" height="281" frameborder="0" webkitAllowFullScreen mozallowfullscreen allowFullScreen></iframe>
<p class="text-center">Isn't the placeholder video awesome?</p>
</div>
It functions fine on a desktop, but acts oddly on Android (CM 10.1 Nightly, Android 4.2.2) browsers:
Yet, the player works fine on Vimeo's own mobile site. What am I doing wrong?
Turns out, this is a known issue with the Vimeo player. I hope it gets fixed soon. For what it's worth, the stock/ASOP browser works fine.
Update: Vimeo has fixed this issue for most devices as of 2013-07-26.