This is an interesting talk, but it is substantially similar to the previous one that was already out there. Which makes me think: it would be interesting to have a diff tool for videos, but it diffs a representation of the content not specific video frames. Customers might include all the students of Udacity, Coursera, EdX and Startupschool.
videoA -> transcriptionA
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V
videoB -> transcriptionB
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V
diff