Controlling Keyframes

It is vital that you learn to control keyframes if you want to work with any kind of fluidity. Fortunately, the concept and the actualities are very simple. Moving a keyframe is a simple matter of clicking it and dragging it somewhere else, but deleting a keyframe is slightly more involved.

To delete a keyframe

Do one of the following:

• Click the keyframe and drag it anywhere off the clip. A small trash can symbol appears to let you know this is going to be deleted (Figure 7.18).
  
  

  Figure 7.18. Delete a keyframe by dragging it off the audio clip.

  

  
  
• Use the Go to Next/Go to Previous buttons , which are under the Audio Editor, until you reach the keyframe you want to delete. Then press the Delete Keyframe button .
  
  

  Audio Undo/Redo

  Liquid Edition has several areas of Undo, each one operating independently from the others. In Chapter 6, you saw how the main Undo command (Ctrl+Z) undid the last movement on the Timeline. However, this Undo command does not affect keyframes applied to audio clips.

  To demonstrate this, place an audio clip on the Timeline and then add a keyframe to the volume using the instructions in the "To adjust the volume with keyframes" task earlier in this chapter. Now click the Undo button or press Ctrl+Z. Instead of the keyframe vanishing, the audio clip is removed from the Timeline.

  If you need to undo a keyframe on an audio track, you must use the Audio Undo/Redo buttons at the bottom left of the Audio Editor or their keyboard shortcutCtrl+Shift+Z. These buttons operate in the same fashion as the normal Undo/Redo commands, but the audio track must be selected for them to work and the Audio Editor must be open.

  
  
• If the keyframe you want to delete was the last one you placed, make sure you select the audio clip and click the audio Undo key .
  
  

Tip

• You must have the Audio Editor open to delete an audio keyframe.