Selecting Trim Sides

Main Topics: Working in Trim Mode
> Using Basic Trim Procedures > Selecting Trim Sides

You can trim a transition on either the outgoing side (A-side or tail), the incoming side (B-side or head), or both sides (dual-roller).

	Single-Roller A-Side icon		Single-Roller B-Side icon
	Dual-Roller icon
	A-side Trim-side button		B-side Trim-side button
	A- and B-side Trim-side button		Cycle Trim Side button

To select sides of a transition to trim:

Click the outgoing (A-side) or incoming (B-side) monitor to define which side of the transition to trim. The pointer changes to a Single- Roller A-Side, Single-Roller B-Side, or Dual-Roller icon, depending on the position of the pointer.

Use the Trim-side keys on the default keyboard (or map the Trim-side buttons onto one of the monitor palettes while in Trim mode) to select side A, side B, or both.

Use the Cycle Trim Sides button to cycle between selection of the A-side, B-side, or both.

In Big Trim mode, use the Trim Counter frame indicators located below the monitors. Click the A-side or B-side of a frame indicator to select single-roller trimming, or Shift+click both frame indicators to select dual-roller trimming.

The selected parts of the transition are highlighted, and the corresponding rollers appear in the Timeline. Also, one or both of the frame counter indicators below the monitors are highlighted to reflect the active trim sides: A-side, B-side, or both. The number indicates how many frames have been added or subtracted from the transition.

Click in between the two frames displayed in the Composer monitor to trim both sides.

Some features described in Help are available only in Avid Xpress Pro or Avid Xpress DV. For more information about Avid Free DV go to