Apple Final Cut Pro 5 - Manual (Page 1162)

Chapter 18 Compositing and Layering 375
II
To change or reverse the alpha channel type of a clip using the Item
Properties window:
1 Do one of the following:
 Select a clip in the Browser, then choose Edit > Item Properties > Format.
 Control-click a clip in the Browser, then choose Format from the Item Properties
submenu of the shortcut menu.
 Select your clip, then press Command-9.
The Item Properties window appears.
2 Control-click the Alpha row in the Clip column and choose the alpha channel type from
the shortcut menu.
∏
Tip: If necessary, you can also Control-click the Reverse Alpha row in the Clip column
and choose No or Yes from the shortcut menu.
To change the alpha channel type of a clip using the Alpha Type menu:
1 Select a clip in the Timeline, Browser, or Viewer.
2 Do one of the following:
 Choose Modify > Alpha Type, then choose a new alpha channel type from the submenu.
 Control-click the Alpha column in the Browser, then choose a new alpha channel
type from the shortcut menu.
Control-click in the Alpha
row, then choose an
alpha channel option
from the shortcut menu.