Well, it’s not called captioning, it’s called annotations, but it works similar to the bubblyply implementation. Video annotations, once published, are shown by default. You can turn them off while watching a video through the “Menu” button on the bottom right of the video player. You can only annotate your own videos, by the way.
Now if they can work on this “video not available” message I keep getting….
Here’s a Sweet Nothing Trailer I started to caption. If it doesn’t show annotations, it may be wordpress fault,
try it on youtube