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Time Ruler and Transport Controls
The Time Ruler, located beneath the viewer area, is based on the total duration of the composition. What it represents depends on which version of Fusion you’re using:
— For DaVinci Resolve users, the duration displayed in the Time Ruler range depends on what’s currently selected in the Edit or Cut page timeline.
— In Fusion Studio, the Time Ruler depends on the Global Start and End values set in the Fusion Studio Preferences > Defaults.
The transport controls under the Time Ruler include playback controls, audio monitoring, as well as number fields for the composition duration and playback range. Additional controls enable motion blur and proxy settings.
Time Ruler Controls in the Fusion Page
If you’ve selected a single clip in the Edit or Cut page Timeline, then the global range shown in the Time Ruler is based on the total source duration for that clip. You cannot move the playhead outside the global range. The yellow lines, called the render range, identify the current In and Out points for the clip and are the only frames visible in the Fusion page. All frames outside of this range constitute the unused head and tail handles of that source clip.
The Time Ruler displaying ranges for a clip in the Timeline via yellow marks (the playhead is red)
If you’ve created a Fusion clip or a compound clip, then the “working range” reflects the entire duration of that clip.
The Time Ruler displaying ranges for a Fusion clip in the Timeline
Render Range
The render range determines the range of frames that are visible in the Fusion page and that are used for interactive playback, disk caches, and previews. Frames outside the default render range are not visible in the Fusion page and are not rendered or played.
You can modify the duration of the render range for preview and playback only. Making the range shorter or longer does not trim the clip in the Edit or Cut page Timelines.
— Hold down the Command key and drag a new range within the Time Ruler.
— Drag either the start or end yellow line to modify the start or end of the range.
— Right-click within the Time Ruler and choose Set Render Range from the contextual menu.