Adobe Premiere Pro CC v.7.xx - Manual (Page 380)

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When you stop adjusting an effect property in Touch mode, the property returns to its initial value. This is also the case while in Read mode if a
keyframe exists for the affected parameter. The Automatch Time preference specifies the time for an effect property to return to its initial value.
Automating audio changes in the Audio Track Mixer can create more keyframes than necessary in the audio track, causing a degradation in
performance. To avoid creating unnecessary keyframes, thereby ensuring both quality interpretation and minimal performance degradation, set the
Automation Keyframe Optimization preference. In addition to the other benefits, you can edit individual keyframes much easier if they are
assembled less densely in the track.
1. Choose Edit > Preferences > Audio (Windows) or Premiere Pro > Preferences > Audio (Mac OS).
2. Enter a value for Automatch Time and then click OK.
Specify automated keyframe creation
Automating audio changes in the Audio Track Mixer can create more keyframes than necessary in the audio track, degrading performance. To
avoid creating unnecessary keyframes, thereby ensuring both quality interpretation and minimal performance degradation, set the Automation
Keyframe Optimization preference. In addition to providing other benefits, this preference makes editing individual keyframes easier because they
are less densely arranged on the keyframe graph. For information about the Linear Keyframe Thinning and Minimum Time Interval Thinning
options, see Audio Preferences.
1. Choose Edit > Preferences > Audio (Windows) or Premiere Pro > Preferences > Audio (Mac OS).
2. In the Automation Keyframe Optimizations pane, select Linear Keyframe Thinning, Minimum Time Interval Thinning, or both.
3. Click OK.
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