You can clone with
HTTPS or Subversion.
In the Youtube Player API documentation, they mention an unstarted state (-1).
This state is triggered when playing videos part of a list, like these ones: http://www.youtube.com/watch?v=ZXrHkIz-krE&list=PLjTlxb-wKvXNSDfcKPFH2gzHGyjpeCZmJ&index=1
For the moment, the Youtube's wrapper does not trigger this state so it's impossible to catch it from the outside (except by listening to message posted by the Youtube's iFrame).
I've did it in my own version of Popcorn-JS, taking the shortest path: arnaudbreton@484e9c9
I'm now wondering how to integrate it in the official version, using the cleaner solution?
Thanks for your help.