Detecting Duplicate Frames over Transitions

When Show Duplicate Frames is turned on in a sequence’s settings and a clip appears more than once within a single edited sequence, the duplicate frames are marked by a colored bar appearing at the bottom of the clip’s video item in the Timeline.

Figure. Timeline window showing a transition and a red bar to indicate that there are duplicate frames used in the sequence.

However, if the duplicated frames fall outside the boundaries of the clip in the Timeline or fall within a transition, a special indicator—four white dots—appears where the duplicate frames are located. The dots can appear on either side or both sides of the transition. The side of the transition the dots appear on indicates the clip or clips that use duplicate frames. When you zoom out, the white dots decrease in range from four to zero, depending on the zoom level.

Figure. Timeline window showing a transition with white dots indicating that there are duplicate frames used in the transition.

For more information about duplicate frame detection, see Timeline Basics.