AFAIK the current onebox implementation works with urls of the form: YouTube
This form of the URL accepts limited player parameters while alternate forms offer a much bigger parameter list that can come in very handy (better playlist control, branding, looping, etc). I am not competent to modify the existing onebox implementation without help. Any thoughts on how tough it would be to support these alternate forms?
Continuing the discussion from Youtube times feature for replies to an embedded youtube video?: