US Patent 7954049 Annotating multimedia files along a timeline

A facility for annotating media files is described. In various embodiments, the facility displays a timeline indicating a duration of the media file, determines that an annotation is associated with the media file, and displays in an area near the timeline an indication of the associated annotation. In various embodiments, the facility displays a timeline indicative of a duration of the media file, receives an indication to add an annotation at an annotation time relative to the duration of the timeline, receives and stores an annotation, associates the annotation with the annotation time, and displays an indication of the stored annotation at an area near the timeline.