Creating a Crossfade
To create a crossfade between two clips:
1. With the Selector tool, click at the point where you want the crossfade to begin in the first clip and drag to where you want it to end in the second clip. Crossfade selections can begin and end anywhere in their respective clips.
2. Do one of the following:

Choose
Edit > Fades > Create.

Press Command+F (Mac) or Control+F (Windows).

To apply a Crossfade using the Default Crossfade setting (standard equal gain), and without opening the Fades dialog, press Command+Control+F (Mac) or Control+Start+F (Windows).
3. Use the view buttons to adjust the view of the crossfade. It may take a few moments to calculate the waveform display for long selections.
4. Select an Out Shape and an In Shape.
5. Select a Linking option.
6. Click the Audition button to audition the crossfade. For long crossfades, it may take Pro Tools a few moments to calculate and load the audio into playback RAM.
7. Do one of the following:

Adjust the curves by selecting different preset shapes with the
Out Shape and
In Shape pop-up menus.

Drag the Fade-In and Fade-Out curves to a custom shape. By choosing None as the Linking option, you can drag the beginning or end points of a fade curve to adjust its beginning or end point.
8. Click the Audition button to audition the crossfade again.
9. When the crossfade sounds right, click OK.
To remove a crossfade, do one of the following:

Select the area of the track containing any crossfades you want to delete and choose
Edit > Fades > Delete.

Select the crossfade with the Grabber tool and press Delete (Mac) or Backspace (Windows).

Right-click the crossfade with any of the edit tools and select
Delete Fades from the pop-up menu.
To trim a crossfade:
1. Select the crossfade with the Grabber tool, or double-click it with the Selector tool.
2. With any of the Trim tools, trim either side of the crossfade. The crossfade is recalculated to reflect the newly trimmed length.