Adobe 22030000 User Guide - Page 136
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ENCORE CS3 132 User Guide Chapter points About chapter points 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 B C Add chapter points as needed for linking to scenes or identifying locations for subtitles. A. Chapter 1 inserted automatically B. Currently selected chapter point is red C. Green chapter point indicates end action is assigned to it Note: For interactive Flash projects, timelines use separate media, so there is a pause between chapters, similar to a pause between layers on a DVD. As part of transcoding to the MPEG-2 compression scheme for DVD projects, 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, Encore 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 gray 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 or MOV files, these restrictions do not apply until you transcode the clips for DVD projects. When Encore transcodes the AVI or MOV 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 PAL. Note: These restrictions do not apply for H.264 Blu-ray files. Add chapter points 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. When you place video or still images, Encore automatically inserts a chapter point at the beginning of a clip. Encore also adds an invisible chapter at the end of timelines to use for linking to end actions. Note: Adobe Premiere Pro and After Effects can export markers in AVI, MOV, MPEG-2, and H.264-Blu-ray files. Encore uses the markers to create chapter points. (See "Importing from Adobe Premiere Pro" on page 42 and "Importing from Adobe After Effects" on page 42.) Add chapter points at specific locations 1 Open the timeline to which you want to add chapter points.