Adobe Premiere Pro CS6 User Manual
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The History panel shows each trim adjustment as an individual entry, whether using the keyboard, clicking one of the buttons or using J-K-L
shortcuts. Entering or exiting trim mode does not change the entries in the History panel, so you can still undo one or more of the trim adjustments
that were made during any trim mode session.
Slip and slide edits in trim mode
Since more than one trim edit point can be selected on a single track, it is possible to set up slip and slide edits by choosing a pair of opposing
ripple edit points on the same track. After the edit points are set up, you can use keyboard shortcuts to complete the trim either in the timeline, or
trim mode. Edit points can be Shift-selected to slip and slide multiple clips at the same time, as well.
Slip edit in trim mode
For details about slip edits with the Slip tool, see
To slip an edit using keyboard shortcuts, do the following:
1. Select the Ripple Edit tool.
2. Click the edit points at the In and Out point of the clip. Choose a Ripple In, followed by Ripple Out.
3. Enter trim mode by pressing Shift+T (Windows), or T (Mac OS), use keyboard shortcuts, or press buttons to perform a slip edit while looping
playback.
You can also use this technique in the Timeline. Press the keyboard shortcuts for Trim Forward or Trim Backward, or use the numeric keypad.
Slide edit in trim mode
For details about slide edits with the Slide tool, see
To slide an edit in trim mode, do the following:
1. Select the Ripple Edit tool.
2. Click the edit points at the In and Out point of the clip. Choose a Ripple Out, followed by Ripple In.
3. Enter trim mode by pressing Shift+T (Windows), or T (Mac OS), use keyboard shortcuts, or press buttons to perform a slide edit while
looping playback.
You can also use this technique in the Timeline. Press the keyboard shortcuts for Trim Forward or Trim Backward, or use the numeric keypad.
Asymmetrical trimming
Asymmetrical trimming can be performed in both the Timeline, and in trim mode in Premiere Pro CS6. An asymmetrical trim is when a combination
of Ripple In and Ripple Out edit points are selected on different tracks with one edit point selected per track. If there is more than one edit point
selected per track, all edit points move in the same direction.
The duration of the trim is the same on all tracks for each asymmetrical trim operation, but the direction that each edit point trims left or right may
be different.
The primary direction of the trim determines the primary edit point. The primary direction of trim is determined by clicking a tool, using a
keyboard shortcut, or clicking a button, and is the same on all tracks for each edit point that matches the primary trim type.
The edit points that do not match the primary edit point type trim in the opposite direction. See
Specifying Primary Direction for Asymmetrical
for details about how the primary edit point for an asymmetrical trim is determined.
Notice that the direction of the shifting of the trailing clips left or right are the same on all tracks, which help to keep all tracks in sync. This shifting
is due to the fact that 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 ten frames with the Ripple Edit tool, then ten frames are added to the other edit points that
are set up as a Ripple Out points. Conversely, ten frames are subtracted from edit points set up as Ripple In points.
Note: These edit points do not actually move, but reveal more of the head material of the clip. Trailing clips on all tracks shift to the right by ten
frames.
Combinations of Trim In and Trim Out trims are not considered asymmetrical even if the side of the edit point differs, since the movement of the
edit point is always in the same direction and there is no shifting of trailing clips.
Specifying Primary Direction for Asymmetrical Trims in the Timeline
For asymmetrical trims using the mouse in the Timeline, the primary direction is applied to the edit point that is dragged. If you select an edit point,
and then drag, it determines the direction and the primary trim type. For example, if you click the mouse to set up a Ripple In trim on Video 1 and
drag to the left, then all the Ripple In edit points that are selected on any track trim to the left and all the Ripple Out edit points trim to the right.
When using keyboard shortcuts for timeline trimming, the primary trim type is used from the previous mouse drag or trim mode operation, if the
edit point is still selected. If the edit point is no longer selected (or you never used the mouse or trim mode to trim with the primary type), then the
edit point on the highest-numbered video track with a selected edit point, or the lowest
points, is used as the primary type. Its direction is specified by the particular keyboard shortcut.
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