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Chapter 7. Working with Audio > Adding and Removing Keyframes

Adding and Removing Keyframes

Keyframes are points in time at which a certain attribute has to occur. You’ll be using keyframes throughout the effects chapters in this book. For the purposes in this chapter, keyframes mark where you want to make adjustments to the audio levels. To add an audio keyframe, follow these steps:

  1. Select the audio track to which you want to make an adjustment.

  2. Make sure Audio Auto Gain is selected from the Timeline menu.

  3. Place your Position Indicator on the point you want to make an adjustment.

  4. Press the N key on your keyboard or click on the Add Keyframe button from the Tool Palette (see Figure 7.16).

    Figure 7.16. The Add Keyframe button adds keyframes to the Timeline.


  5. You’ll notice a small triangle or keyframe is added to the audio track. This keyframe allows you to make an adjustment to your audio levels. If you only add one keyframe, you’ll be adjusting the entire track. Notice in the following example I have added three keyframes, a keyframe to start my adjustment, a keyframe to make an adjustment upon, and a keyframe to end my adjustment (see Figure 7.17).

    Figure 7.17. Keyframes are denoted by small triangles on the audio track.



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