Timeline Overview Use the Timeline to assemble and edit the video. The Timeline represents the sequence of all clips and elements in a video. Timeline toolbar Basic editing options such as split, cut, view tracks, and audio options. Playhead Indicates the current frame selected on the Timeline. The current frame displays in the Preview Window. See Select Part of the Timeline. Time reference area References the time within the video. The tick marks on the ruler scale according to the Timeline zoom level. Tracks Represent the sequence of all clips and elements of a particular type in the video. Lock icon Lock a track to preview editing or changing the clips or elements on that track. See Lock or Unlock a Track. Link icon By default, the audio and video elements of a clip are linked together. Unlinking the audio and video tracks allows you to edit the audio and video separately. See Unlink Audio and Video Tracks. Context menu Right-click on the Timeline to view the editing options for a clip or element. The position of the playhead and the content on the Timeline determine the options available in the context menu.