Youtube style video preview

[suhr]

Make navigation less blind.

[godly-devotion]

I found an interesting paper regarding this feature http://vidosearch.com/publications/keyframe-navigation-tree.pdf

Main points extracted (see Fig 1):

• Users typically navigate in a coarse-to-fine grained manner. They first try to quickly narrow down the search to a specific temporal area and then switch to closer inspection of that area.
• In order to make sure that the keyframes give a good representation of the actual video content, we use a special keyframe selection method (defined in the Keyframe Selection section).
• It allows a user quickly narrowing down an interactive content search to a specific content area at the first level, and performing a fine-grained search with consideration of more details on the lower levels.

However unlike their UI where they showed all three levels of Keyframe navigation, based on the speed the user is moving their mouse (or panning), we can show coarse or detailed keyframes.