System information
n Drag a bus track's bottom border to set its height.
n Click Minimize to minimize a track vertically.
n Click Maximize to zoom in vertically so a bus track fills the lower portion of the timeline.
n After minimizing or maximizing a bus track, click the Minimize or Maximize button again to return
a bus track to its previous height.
n Press Ctrl+Shift+Up/Down Arrow when the bus track area has focus to resize all bus tracks at once.
Video Bus Track
From the View menu, choose Video Bus Track to toggle the display of the video bus track at the bottom of
the timeline. A single bus track exists as a timeline representation of the main video output.
You can use the bus track to animate video output effects using keyframes, add motion blur envelopes, or
video supersampling envelopes.
Adding keyframes to the video bus track
Adding keyframes to the video bus track is just like working with any other video track. Use video bus track
keyframes to animate video output effects. For more information, see "Keyframe Animation" on page 294
and "Applying video effects" on page 315.
Adding a fade-to color envelope
You can add fade-to-color, motion blur amount, and video supersampling envelopes to the video bus track
to affect your video output.
Adding and editing a fade-to-color envelope is just like adding an envelope on a standard video track, but it
affects all tracks. For more information, see "Video Track Automation" on page 260.
Adding a motion blur envelope
Motion blur can help you make computer-generated animation look more realistic. For example, if you use
track motion or event pan/crop to move a clip across the frame, each frame is displayed clearly when no
motion blur is applied. Turning on motion blur adds a motion-dependent blur to each frame to create the
appearance of smooth motion in the same way a fast-moving subject is blurred when you take a
photograph with a slow shutter speed.
Panned event frame without motion blur
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