1. A computing device, comprising: a logic subsystem configured to execute instructions; and a data holding subsystem comprising instructions stored thereon that are executable by the logic subsystem to: receive an input of a video and/or audio content item; compare the video and/or audio content item to one or more object descriptors each representing an object for locating within the video and/or audio content item to locate a plurality of instances of one or more of the objects in the video and/or audio content item; generate metadata for each object located in the video and/or audio content item, the metadata for a corresponding object comprising an identity of the corresponding object; output to a display device a user interface comprising a set of images representing the plurality of instances at which a selected object is located in the video and/or audio content item; and receive a validating input via the user interface, the validating input comprising a lesser number of inputs than a number of instances represented by the set of images, the validating input related to whether the metadata generated for the selected object is correct.