Apple Final Cut Pro 5 - Manual (Page 1571)

220 Part III Output
Adding Chapter and Compression Markers
to Your Sequence
Once you have your edited sequence or program finished, you can add markers to the
sequence for use on DVD. Markers are reference points you can place within clips or
sequences that identify specific frames. There are two kinds of markers you can add
that directly relate to authoring a DVD—chapter markers and compression markers.
 Chapter markers allow DVD authoring applications to create a navigable chapter list
for your exported QuickTime movie. Chapter markers force MPEG keyframes (known
as I-frames) at their location, since the DVD specification requires an I-frame at each
chapter point.
 Compression markers identify areas of abrupt change and include two types: those
that are automatically inserted by Final Cut Pro at all edit points, and those you
manually place in the clip or sequence. Like chapter markers, compression markers
force I-frames at their location, although in this case it is for better quality encoding,
and they are not used to create a chapter list.
Note: When you export a QuickTime movie, you have an option to export various kinds
of markers, including compression, chapter, or DVD Studio Pro markers. When you
choose to export DVD Studio Pro markers, Final Cut Pro actually exports chapter
markers and all compression markers. This includes compression markers you set
manually, as well as ones created automatically by Final Cut Pro at edit and transition
points.
For details on adding and deleting markers, see Volume II, Chapter 4, “Using Markers.”
More About Chapter Markers
You can add chapter markers so that DVD authoring applications can create a
navigable chapter list for your exported QuickTime movie. Chapter markers also appear
in QuickTime Player as a chapter list for jumping to specific parts of the movie using a
pop-up menu.
A chapter marker is distinguished by the text appearing in the Comment
field of its Edit Marker window. For details on adding and deleting markers, see
Volume II, Chapter 4, “Using Markers.”