
The Add/Delete Keyframes button is activated for keyframing.

(Optional) Add Standard effects to clips.By default, the Fixed effects (Motion, Opacity, and Volume) are applied to clips in the video and audio tracks. Make sure you have a sequence with clips in the Timeline panel.Once keyframes are activated, you can add and adjust as many keyframes as you need for animating the effect’s property. To animate an effect property, you must activate keyframing for that property in the Effect Controls panel. Keyframes for audio clip effects are like keyframes for video clip effects they can be edited in the Timeline panel or in the Effect Controls panel. Keyframes for audio track effects can be edited only in the Timeline panel or in the Audio Mixer.The Velocity graph displays keyframes with handles for adjusting the speed and smoothness of the value changes from keyframe to keyframe. The Value graph displays keyframes with changes in an effect’s property values. Once keyframing is activated for an effect property, you can display the Value and Velocity graphs. Like the Timeline panel, the Effect Controls panel also displays keyframes graphically.The Timeline panel can display the keyframes for multiple tracks or clips at once but can display the keyframes of only one property per track or clip. The Effect Controls panel can display the keyframes of multiple properties at once, but only for the clip selected in the Timeline panel.You can also change the interpolation method and use Bezier controls to fine‑tune the speed and smoothness of an effect’s animation. For example, you can bring motion to a gradual stop.

By default, values change between keyframes in a linear manner, but you can apply options that refine the rate of change between keyframes. In the Timeline panel, variations in keyframe values are indicated graphically, so you can see at a glance how keyframe values change over time.The Effect Controls panel is usually easier for editing keyframes of properties that have multiple, angular, or two‑dimensional values, such as Levels, Rotation, or Scale, respectively. Editing keyframes in the Timeline panel works best for effects that have a single, one‑dimensional value, such as opacity or audio volume.The following guidelines may indicate the appropriate panel for the task at hand: Sometimes, the Timeline panel alternative can be more appropriate for quickly viewing and adjusting keyframes. When you use keyframes to animate the Opacity effect, you can view and edit the keyframes in either the Effect Controls or the Timeline panel.
