Apple DVD Studio Pro 4 - Manual (Page 383)

A playhead icon appears in the timeline scroller area to let you know where it is relative
to the part of the timeline being shown, which is useful if you cannot see the playhead
in the Track Editor. For example, if the playhead icon appears to the left of the scroller,
that means the playhead is at a point in time before the clips currently visible in the
timeline.
The playhead appears
in the timeline’s scroller.
Positioning the Playhead by Dragging
You can drag the playhead along the timeline to see the video (and subtitle, if applicable).
This is useful when placing markers because it allows you to see the actual video frame.
As you drag the playhead along the timeline, the timecode of its current position appears
in the playhead timecode entry. A line extends across all of the streams, indicating the
playhead position.
The playhead’s current
timecode appears here
when you drag the
playhead.
You can also click anywhere in the timeline to move the playhead to that position and
have the video at that position appear in the Viewer tab. Playback starts at this point if
you click the Play button in the Viewer tab.
Positioning the Playhead by Using Keyboard Shortcuts
There are a number of keyboard shortcuts that you can use to position the playhead.
• Left Arrow and Right Arrow keys: Move the playhead one frame at a time.
• Shift–Left Arrow and Shift–Right Arrow keys: Move the playhead one second at a time.
• Option–Left Arrow and Option–Right Arrow keys: Move the playhead one GOP at a time.
• Control–Left Arrow and Control–Right Arrow keys: Move the playhead to the next marker.
• Command–Left Arrow and Command–Right Arrow keys: Move the playhead to the start
or end of the selected clip.
383 Chapter 17 Creating and Editing Tracks