How the Connection Between Clips and Media Files Can Be Broken

There are several reasons the connection between the clips in your project and your media files on disk can break, causing the corresponding clips in your project to go offline:

When a clip in your project goes offline, any sequence render files associated with that clip also go offline, and the Offline Files dialog appears (see When Final Cut Pro Reconnects Your Clips).

When you play back offline clips, a Media Offline message is displayed until these clips are either reconnected or recaptured.

Figure. Viewer window showing the Media Offline message.