Apple DVD Studio Pro 4 - Manual (Page 472)

Adding Button Highlight Markers
To create a button over video subtitle, you add a marker at the point where the subtitle
should appear, select its button highlight setting, and add a second marker where the
subtitle should end. Once you do this, if you create a subtitle between these markers, its
start snaps to the marker with the button highlight setting selected and its end snaps to
the second marker, regardless of its type.
Any marker can be configured as a button highlight marker. See Working with Markers
for information on adding markers to a track.
To configure a marker as a button highlight marker
Do one of the following:
µ
Control-click the marker, then choose Button Highlight Marker from the shortcut menu.
µ
Select the marker in the Track Editor. In the Marker Inspector, select the Button Highlight
type in the General tab.
You can also select any of the other types available. Depending on the other types you
select, at least a part of the marker will change to red. See
Working with Markers for more
information.
The second marker, which ends the button over video subtitle, can be of any type.
How a Button Highlight Marker Affects the Subtitle Stream
If a subtitle already exists between the two markers that specify the start and end of a
button over video subtitle, its duration changes to match the time between the two
markers. This is true of all subtitle streams. If you have traditional subtitles on one or more
of the other subtitle streams, adding button highlight markers will also affect them. For
this reason, you must use care when deciding when and how long to have the buttons
over video subtitle appear, so as not to affect existing subtitles.
You can have several subtitle streams in the same track configured for buttons over video.
For example, you may be using text for the buttons and want to have different streams
for each language. It’s important to keep in mind that all button active areas, connections,
navigation settings, and color mapping settings are applied to all subtitle streams. The
only element that can be different between the streams is the text or overlay you use.
Adding a Button over Video Subtitle Clip
Once you have configured the button highlight marker and the ending marker, you can
add the button over video subtitle.
To add a button over video subtitle clip
µ
Double-click in the subtitle stream between the button highlight marker and the ending
marker.
472 Chapter 19 Creating Subtitles