Trimming Transitions and the Surrounding Clips

Trimming is the process of modifying the edit points of clips that are already in your sequence. After you’ve opened a transition in your sequence in the Transition Editor, you can fine-tune your edit. This is done using the handles on the Out point of the outgoing clip and the In point of the incoming clip that meet to form your transition’s edit point.

Changes you make to a transition in the Transition Editor (if it’s opened from the sequence in the Timeline and not the Browser) immediately affect this transition in your sequence.

Figure. Transition Editor window showing the start and end points of the transition and the durations of the outgoing and incoming clips.

About the Two-Up Display in the Canvas

You can drag the pointer in the Transition Editor to trim the transition and change the duration of the transition or the actual location, or edit point, where the transition occurs between two clips. When you do this, a dual-frame display appears in the Canvas to show how your change affects the clips surrounding this transition.

  • The frame on the left: This displays the current frame at the transition’s start point in the outgoing clip.
  • The frame on the right: This displays the current frame at the transition’s end point in the incoming clip.

The name of each clip is at the top of each display, and the timecode for the transition’s start or end point is visible at the bottom of each display.

Figure. Canvas window showing a two-up display with the start frame of the transition on the left and the end frame of the transition on the right.

Trimming the Duration of a Transition

When you move the pointer to either edge of a transition in the Transition Editor, the pointer changes to a Resize pointer. You can then change the duration of the transition, depending on how much clip overlap is available.

To change the duration of a transition
  1. Open the transition in the Transition Editor.

  2. Do one of the following:

    • Enter a new duration in the Timecode Duration field, then press Return.

    • Drag the beginning or end of the transition to change its length. When you do this to a transition centered at the edit point, both sides of the transition change duration, but the edit point itself doesn’t move.

      Figure. Transition Editor window showing the edge of a transition being dragged to change the transition's duration.

Changing the Location of a Transition with a Roll Edit

If you move the pointer over the middle of a transition in the Transition Editor, the pointer changes to the Roll tool. You can then move the edit point along with the transition to the left or to the right, as long as there is available overlap between the outgoing and incoming clips.

To do a roll edit, changing the location of a transition
  1. Open the transition in the Transition Editor.

  2. Place the pointer anywhere on the transition.

  3. When the pointer changes to the Roll tool, drag the edit point and the transition to the new location.

    Figure. Transition Editor window showing the Roll tool being used to drag the edit point to a new position.
    Figure. Canvas window showing a two-up display of the start and end frames of the transition.

Adjusting the Length of a Clip in a Transition with a Ripple Edit

Even when a transition is applied between two clips, you can change the duration of the outgoing or incoming clip using the Ripple tool. Ripple edits do not cause gaps in your edited sequence.

  • Rippling the Out point of the outgoing clip: This moves the transition and the edit point at the same time so that the outgoing clip is shortened or extended. The rest of your edited sequence moves forward or backward to accommodate this change.
  • Rippling the In point of the incoming clip: This has no effect on the location of the edit point or the transition, but shortens or lengthens the incoming clip. All subsequent clips are moved to the left or right so that there is no resulting gap.

When you trim the outgoing or incoming clip with the Ripple tool, the Canvas shows the current frame of the edit point you’re dragging, along with the clip’s name and the current timecode value of the clip, in a single-frame display. A tooltip is displayed at the location of the pointer in the Transition Editor to show the offset between the new edit point you’re selecting and the original edit point.

To do a ripple edit, adjusting the length of the transition
  1. Open the transition in the Transition Editor.

  2. Place the pointer at the Out point of the outgoing clip or at the In point of the incoming clip.

    Figure. Transition Editor window showing the Ripple tool at the In point of the incoming clip and a box displaying the timecode offset of the ripple edit.
    Figure. Canvas window showing the frame at the new edit point.
  3. When the pointer changes to the Ripple tool, drag the edit point to another frame in your clip.