User Guide

CHP. 5 WORKING WITH TRACKS
113
Resizing audio bus tracks
You can drag the horizontal splitter between the track list and bus tracks to increase or decrease the space
allocated to bus tracks. Perform any of the following actions to resize individual bus tracks:
• Drag a bus track's bottom border to set its height.
• Click Minimize ( ) to minimize a track vertically.
• Click Maximize ( ) to zoom in vertically so a bus track fills the lower portion of the timeline.
• After minimizing or maximizing a bus track, click Restore ( ) to return a bus track to its previous height.
• Press + + / when the bus track area has focus to resize all bus tracks at once.
Using video bus tracks
From the View menu, choose Video Bus Tracks to toggle the display of the video bus track at the bottom of
the track view. A single bus track exists as a timeline representation of the main video output.
You can use bus tracks 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 information on adding keyframes, see Using keyframe animation
on page 207.
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 on adding envelopes, see Working with track envelopes on page 107.
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.
Note: Motion blur significantly increases your rendering
time. Adjust the envelope to apply motion blur only where
necessary.
1. Right-click the video bus track, choose Insert/Remove Envelope from the shortcut menu, and then choose
Motion Blur Amount from the submenu.
2. Add and adjust envelope points as necessary to set the time interval that will be used for blurring.
Increasing the value emphasizes the blur effect. For example, setting the envelope to 0 means no blurring
will occur; setting the envelope to 1 second means that each frame will be blurred for one-half second
before and after the frame.
Ctrl Shift