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Using Direct Manipulation for Video Browsing
In videos, there is a seeker bar that enables us to linearly browse through the video timeline. This is an effective method to search a certain part in a video at certain time, but it is only an intermediary between the user and the object to be manipulated. The object is in the video image itself. However, it might be more beneficial for the users to directly manipulate the object. For instance, in a video of a car accident, we might want to directly drag a car to find the moment when it hits another car. It will be easier than searching for that part through the video timeline. In this direct manipulation technique, a close match is maintained between the user input and the system’s output. Although seeker bars are excellent for time-centric browsing, direct manipulation might provide more accurate space-centric browsing.
DimP – A Direct Manipulation Video Player is a video player prototype that allows users to browse video clips by directly manipulating the video content. It automatically extracts object motions from the videos. The user can then control video playback by scrubbing along these objects’ trajectories in DimP.
We do not modify the video clip itself, but as with dragging a slider, dragging an object constrained to a trajectory is similar.
Link to DimP: http://dragice.fr/dimp/ (Links to an external site.)
Directly manipulating video:https://www.youtube.com/watch?v=WcIy9O344bI (Links to an external site.)