I'm using a video theme called OnDemand. Evidently, since the theme is set up so that one enters Youtube URL's in a separate field from the standard blog entry field, your plug can't find any of the videos that are on my site. Possibly because they are enclosed in a <div id="video-container">... BUT the YouTube embed code is there in the source code!!
Can you think of a way to make your plugin to scan the ALL of the html source code for YouTube URL's? I would think this would solve a lot of problems people are having with your plugin.
Here's the code for where the YouTube embed code exists on my blog:
<div class='video-embed'><object width="560" height="340"><param name="movie" value="http://www.youtube-nocookie.com/v/xaPepCVepCg?fs=1&hl=en_US&rel=0&autoplay=1"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube-nocookie.com/v/xaPepCVepCg?fs=1&hl=en_US&rel=0&autoplay=1" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="560" height="340"></embed></object></div>
</div> <!-- video-container -->