User Manual

Table Of Contents
Summarizing Trim Operations
Before going into the different methods of trimming that are available, users who are new to
editing might benefit from a quick summary of what each trimming operation actually does.
Each trim operation is designed to let you move edits and clips in relation to whichever clips are
around them, by performing several operations at once. The five primary methods of
trimming are:
Resize: Shortens or lengthens the end of an outgoing clip or the beginning of an
incoming clip, while either overwriting a neighboring clip or leaving a gap behind as
necessary. While this isn’t usually included in a discussion of “trim” operations, it’s
actually the simplest kind of trimming you can do.
Roll: Moves an edit point to the left or right by either shortening the outgoing clip while
lengthening the incoming clip, or vice versa. Roll edits do not change the duration of
the overall Timeline.
Ripple: Shortens or lengthens the end of an outgoing clip or the beginning of an
incoming clip, while simultaneously moving all clips either to the right in the Timeline
(if you’re rippling to lengthen a clip) or left in the Timeline (if you’re rippling to shorten a
clip) to fill the gap or prevent overwriting that would otherwise occur if you were doing
a resize operation. Ripple edits do change the duration of the overall Timeline and can
alter the sync relation between different tracks if you’re not careful.
Slip: Keeps a clip in the same place in the Timeline, while changing the range of media
that appears in that spot. Slip edits do not change the duration of the overall Timeline.
Slide: Keeps a clip’s range of media the same, but moves that clip to the left or right by
either shortening the outgoing clip to its left while lengthening the incoming clip to its
right, or vice versa.
Selection-Based Trimming
Using the Trim Tool
Trim mode differs from Selection mode in that operations that would move clips with the
Selection tool will either slip or slide clips with the Trim tool. Other operations that would resize
edits with the Selection tool instead ripple the Timeline to automatically close gaps when using
the Trim tool. The following sections describe the various trim operations that are available,
both when using the mouse, and when using the keyboard.
To enter Trim Edit mode:
Click the Trim Edit button, or press the T key.
How the Trim Tool Differs From the Selection Tool
Aside from the actual trimming operations that are available, there are a few other important
differences between the Trim tool and the Selection tool.
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