During playback of a content item, a media signature corresponding to a first portion of the content item is identified. A number of media signatures representing portions of a plurality of other content items may have been previously identified and stored. Each stored media signature may also include an identifier of an associated content item and a timestamp corresponding to a position in the associated content item at which the signature is located. If it is determined that the identified media signature matches a stored media signature, a progress bar is generated for display comprising an identifier of the content item associated with the matching stored media signature, and a progress indicator corresponding to a timestamp associated with the stored media signature.