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Do one of the following:
•
Click the Zoom In icon
•
Click the Zoom Out icon
•
Select the Zoom tool
can also Alt-click to contract the timeline.
•
Press the plus sign (+) or minus sign (-) key to zoom in or out.
Chapter points
About chapter points in timelines
You add chapter points to mark a specific frame of a video clip in a timeline. Chapter points commonly mark the
beginning of specific scenes and sequences. Chapter points also let the viewer skip forward or back through a clip by
pressing the Next Chapter or Previous Chapter buttons on the remote control. You can link to chapter points, add
actions to chapter points, or use them to place subtitles.
A
Timeline with chapter points
A. Chapter 1 inserted automatically B. Add chapters as needed for linking to scenes or identifying locations for subtitles.
As part of transcoding to the MPEG-2 compression scheme, video footage is divided into contiguous Groups of
Pictures (GOPs), which range from 4 to 20 frames per group. Playback of any frames within the GOP must begin
from the start of the GOP, the GOP header. For this reason, when you insert a chapter point, Adobe Encore DVD
places it at the closest GOP header prior to the current frame. If a chapter point already exists at the prior GOP
header, the program places it at the next GOP header. The time ruler displays GOP headers as white vertical lines
along the bottom edge of the ruler. The Monitor panel lets you skip forward or back to the next GOP header.
When you work with AVI files, these restrictions do not apply until you transcode them. When Adobe Encore DVD
transcodes AVI files, it automatically sets GOP headers at every chapter point you set. After transcoding, the file is
considered an MPEG-2 file, and the rules for chapter point placement for MPEG-2 files apply to that clip. The
minimum allowed distance between chapter points is 15 frames for NTSC and 12 frames for NTSC.
To add chapter points to timelines
You can add chapter points from both the Monitor panel and the Timeline Viewer. Chapter points are numbered
sequentially and renumbered automatically if you insert a new point between two existing chapters. You can also add
chapter points at set intervals. (See "To add chapter points at intervals" on page 140.)
When you place video or still images, Adobe Encore DVD automatically inserts a chapter point at the beginning of
a clip.
or drag the zoom slider to the right. The timeline expands to show more detail.
or drag the zoom slider to the left. The timeline contracts to show less detail.
from the toolbox and click or drag over the area of the timeline you want to expand; you
B
ADOBE ENCORE DVD 2.0
139
User Guide
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