Jean writes here about dabble and here focus on video metadata.

This record, called “metadata”, makes it easy to search and find video. The community of Dabble members adds details and notes, correcting mistakes, and sharing what is valuable to them about the media, enhancing the metadata in a massive team effort that goes far beyond what any one site can do alone.

Also, there is a reference to Gotiut and a review on TechCrunch, that discusses a tagging feature that will allow the viewer to locate sections of a video file. A concept that makes a lot of sense.

Fourth, they are adding deep tagging features that will allow users to jump right to specific parts of videos - an important feature when reviewing sports footage, for example…