US Patent 7623755 Techniques for positioning audio and video clips

Techniques and systems for positioning video and audio clips in timeline sequences. In some embodiments, a computer program product, encoded on a computer-readable medium, is operable to cause data processing apparatus to perform operations that include, in response to selection of a first clip in a first track, moving the selected first clip in a timeline sequence. The timeline sequence includes multiple matched audio and video tracks configured to serve as containers for clips, and the first clip is linked with a second clip. In response to selection of the second clip, the operations include moving the selected second clip into a track that is a non-matching track in the timeline sequence, in which the non-matching track includes a track that is not associated with a track where the first clip is located. The drag-and-drop techniques can allow independent placement of linked audio and video clips into non-matching tracks.