No Concurrent Video

This is a very simple module that prevents multiple HTML 5 videos from playing on a page, provided the elements have the 'video' (the default setting) class assigned to them.

To use: make sure all HTML 5 <video> tags on a page are assigned a class of 'video' (e.g., <video src="myvideo.mov" class="video"></video>), or assigned a custom class name as defined in the module's settings ('No Concurrent Video Settings' from Drupal's configuration page).

That's it! Now whenever you start another video, any previously playing video is paused, preventing more than one video from playing at once on a single page.