In the iDVD window, there is a box in the lower left corner. When I scroll over it, I get the message to hide or show the intro movie. Checking or unchecking the box seems to do nothing. Can anyone explain?

Question

Working with iDVD on a project, there is a box in the lower left corner and sometimes another in the lower right corner.  Scrolling over the one in the lower left corner, I get a message indicating that this box hides or shows the intro movie.  I have checked and unchecked the box, but see nothing different in the project.  Nor can I figure out what is meant by "intro movie."  Can anyone explain?

Answer 1

Go to iDVD Help and type in Intro Movie, and you will get the full version of this:
Many iDVD themes have “motion menus” that include animations or video that loop, or play repeatedly, until the viewer clicks a menu button. Themes with motion menus have a motion icon in the lower-right corner.
In addition to background video, iDVD motion menus may also feature an intro, or short animation, that plays once before the part that loops. Other motion menus also include an “outro” that plays after the viewer clicks a button, serving as a transition between the menu and the selected content.
An example of an iDVD 6.0 theme with an intro and an outro is Reflection White Main. In this theme, the first drop zones appear in the intro, and the buttons and title appear just before the looping part of the background video. In the outro, everything flies offscreen after the viewer clicks a button.
iDVD provides tools for viewing these motion menus without going into preview mode, which is especially helpful when you are filling drop zones, and for turning the intro or outro off.
Here are ways to view and edit the background movie:
◼ 
Drag the diamond-shaped motion playhead along the scrubber bar (shown below), to view the background movie, stopping wherever you like.
(If you don’t see the motion playhead in iDVD, choose View > Show Motion Playhead.)
◼ 
Deselect the checkboxes at the left and right end of the scrubber bar if you don’t want to use the intro or outro, respectively, in your DVD menu.
The scrubber bar shows the intro and outro as shaded areas at the beginning and end.
You can also control the intro and outro from the Menu Info window. With your pointer over the menu (and with no buttons or text objects selected), press Command-I to open that window. Select or deselect the Intro and Outro checkboxes in the Background section of the window.
NOTE: If you drag your own movie to a motion menu background, the outro is automatically removed. To customize the background and keep the outro, use a still image in the menu background instead of a movie.