focus on trimming. To use Trim mode, you need to activate it by selecting an edit point
between two clips. There are three ways to do this.
Double-click an edit point (the left or right end of a clip) on the Timeline with a selection
tool or trimming tool.
With the correct Timeline track indicator enabled, press Shift+T. The playhead will move
to the nearest edit point, and Trim mode will open in the Program Monitor.
Drag around one or more edits using the Ripple Edit tool or Rolling Edit tool to select them
and open the Program Monitor to Trim mode.
Tip
You also can select edits by dragging around them using the Selection tool if you hold
Command (macOS) or Ctrl (Windows).When invoked, Trim mode shows two video clips. The box on the left shows the outgoing clip
(also called A side). The box on the right shows the incoming clip (also called B side). Below the
frames are five buttons and two indicators.A. Out Shift counter: This shows how many frames the Out point for the A side has changed.
B. Trim Backward Many: This performs the selected trim, adjusting by multiple frames
earlier. The size of the adjustment depends on the Large Trim Offset option in the Trim
Preferences tab of Preferences.
C. Trim Backward: This performs the selected trim, adjusting by one frame at a time earlier.
D. Apply Default Transitions to Selection: This applies the default transition (usually a
dissolve) to video and audio tracks that have their edit points selected.
E. Trim Forward: This is like Trim Backward except it adjusts the edit one frame later.
F. Trim Forward Many: This is like Trim Backward Many except it adjusts the edit multiple
frames later.G. In Shift counter: This shows how many frames the In point for the B side has changed.