Google recently announced their new "video intelligence" API at the Google Next conference in San Francisco on March 7th. The API aims at providing shot-by-shot annotations of objects in videos.
While other object classification APIs already exist, they are mainly geared towards images. This is the first API I have seen that classifies objects in videos.
Possibly applications include video spam filters, automated classification/filtering, annotations for the blind, and shot change detection. I could also see the object detection feature being useful for DIY autonomous vehicles if this API gains the ability to stream and process live video in the future. We will see if we can utilize this tool for something interesting in one of our upcoming videos.