Hi there.
It seems that this plugin only works if the source is a video file. I get this error when it's used with videos from YouTube or Vimeo, and sometimes the browser crashes:
VIDEOJS: RangeError: Maximum call stack size exceeded(…) videojs.js:19296 VIDEOJS: RangeError: Maximum call stack size exceeded(…)
The stack looks like this:

Please let me know if anyone could help me solve this problem.