Button Highlight Markers
You use button highlight markers when you want to have buttons display over the video
on the track. These buttons are actually configured as part of a subtitle clip. The buttons
appear once you reach the marker and disappear when you reach the next marker (unless
it has also been configured as a button highlight marker). Often referred to as “buttons
over video,” this feature allows you to provide choices to viewers while they watch the
track part of the title. See
Creating Buttons over Video
for more information on using
buttons over video.
There must be at least 1.5 seconds between a button highlight marker and
the next marker.