Asymmetrical trimming

Learn more about asymmetrical trimming in Premiere Pro.

When a combination of Ripple In and Ripple Out edit points are selected on different tracks, with one edit point selected per track, it's an asymmetrical trim. If more than one edit point is selected per track, all edit points move in the same direction. Asymmetrical trimming can be performed in the Timeline and Trim Edit modes.

The trim duration is the same on all tracks for each asymmetrical trim operation, but the direction of each edit point trim left or right may differ.

• The primary direction of the trim determines the primary edit point. The primary direction is determined by selecting a tool, using a keyboard shortcut, or selecting a button, and it's the same on all tracks for each edit point that matches the primary trim type.
• The edit points that don't match the primary edit point type trim in the opposite direction. 
• Specifying the primary direction for asymmetrical trims in the Timeline determines the primary edit point for an asymmetrical trim.

Notice that the direction trailing clips shift in is the same on all tracks, left or right is the same on all tracks, which helps to keep all tracks in sync. This shifting is because the tail of the trimmed clip moves in a different direction for a Ripple In versus a Ripple Out edit point.

For example, if you drag an edit point to the right by 10 frames with the Ripple Edit tool, then 10 frames are added to the other edit points set up as Ripple Out points. Conversely, 10 frames are subtracted from edit points set up as Ripple In points.