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Slipping and Sliding Segments

In addition to trimming and Segment mode editing, Media Composer has two additional functions that allow you to alter the position or contents of various shots within your Timeline: slipping and sliding.

Slipping and sliding are forms of dual-roller trimming, where two consecutive transitions are trimmed simultaneously. Because they are a type of dual-roller trim, using slip and slide will not affect the duration of a sequence.

Using Slip Mode to Change Shot Contents

When you slip a shot, the contents of the shot changes, but its duration and position do not. Essentially, the shot stays put while you access the clip’s handles to show a different part of the shot—earlier or later material in the master clip.

To slip a shot:

  1. To show the slip display, do one of the following:
    • While in Source/Record mode, drag a lasso around the entire segment from right to left.
    • While in Trim mode (and only when the pointer becomes a trim roller), double-click a segment of video or audio in the Timeline, or Shift+click inside the opposite end of the clip that you are trimming.
    • While in Trim mode, right-click a segment and select Slip.

    Notice the four new pictures at the top of the monitor.

    The first picture is the outgoing frame before the selected shot; the last picture is the incoming frame after the selected shot. The middle two pictures are the head and tail of the shot you are slipping.

  2. In the Timeline, click one of the selected heads or tails (it doesn’t matter which you click). With the tail of the Trim mode pointer directed toward the center of the segment you are sliding, drag the selected material to the left or right.

    Notice that the first and last pictures remain static as you drag because you are not changing the position of the shot in the sequence. The middle two pictures change because you are changing the content of the shot itself. Dragging right reveals later material. Dragging left reveals earlier material.

  3. Release the mouse button when you are satisfied with the change.

Using Slide Mode to Change the Shot Position

When you slide a shot, the position of the shot changes, but its duration and content do not. Essentially, the sliding shot moves between the two adjacent shots, and the handles on each side roll in and roll out to accommodate the move.

To slide a shot:

  1. Do one of the following to show the slide display:
    • While in Source/Record mode, Shift+Alt+drag (Windows) or Option+drag (Macintosh) a lasso from right to left around the material you want to slide.

      You can use this method to slide multiple clips. This is useful, for example, when you need to change the position of an entire montage.

    • While in Trim mode (and only when the pointer becomes a trim roller), Alt+double-click (Windows) or Option+double-click (Macintosh) a segment of video or audio to select the frames that precede and follow it, or Shift+click outside the opposite end of the clip you are trimming.
    • Enter Trim mode at the head of the chosen segment. Right-click that segment, and from the menu, select Slide.

    The same four pictures appear that you saw in Slip mode. However, in Slide mode, these pictures change as you drag because you are trimming the outgoing and incoming frames before and after the segment. The middle two pictures, the first and last frames of the segment, remain static and unchanged.

  2. In the Timeline, drag one of the rollers left or right. (Although technically it doesn’t matter, it’s often most helpful to drag the head roller.)

    Dragging to the right moves the segment to a later master timecode. Dragging to the left moves the selected segment to an earlier master timecode.

  3. Release the mouse button when you are satisfied with the change.

Using Keyboard Shortcuts for Slipping and Sliding

You can also slip or slide a shot using the following keys:

  • Numeric keypad
  • J-K-L keys: Using J-K-L keys while slipping a shot plays either the head of the shot or the tail, depending on which monitor has the green highlight underneath it. When you click Stop, the other frame jumps to its new position based on the trim on the other end.
  • Trim keys: >>, >, <, <<
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