Techniques for reducing resources used for uploading a video to be indexed for searching at a cloud search service are provided. A file containing the video is received at an on premise client application. The application processes the file with an event detector to detect at least one event of interest based on a first set of event detection criteria. The at least one event of interest is sent to the cloud searching service. The cloud searching service classifies at least one object in the at least one event of interest. The cloud searching service identifies a second set of event identification criteria based on the classification. The cloud searching service sends feedback to the application for event detection and sending events based on the second set of event identifying criteria. The application modifies the first event detection criteria based on the feedback to create new event detection criteria.