An offline clip is either a clip that has been unlinked from its source file, or a logged clip that you still have to capture. Offline clips contain information about the source files they represent, and they give you flexibility when actual files are not available. If an offline clip appears in a Timeline panel, “Media Offline” appears in the Program Monitor and in the track.
When you log clips from a tape, Premiere Pro automatically creates offline clips containing the exact information required to capture the clips later. You can also create offline clips manually. Use offline clips in situations such as the following: