I don't want to hijack a much simpler proposal here, so I won't go
into too many details (unless encouraged :-), however I'm working on
some annotation software that allows for saving/showing annotations
from oEmbed resources.
I'm interested in some way for oEmbed to expose/document any existing
javascript API for things like onready(callback), play(), pause(),
seek(time), getTime(), duration() for video/audio.
This relates to autoplay because it could be an option, but it could
also be done with onready(function() { play(); }). Though I could see
how that's pretty burdensome for just autoplay.
/sky