Enter a value for the level. A negative value decreases the volume level and a positive value increases the volume level. A value of 0.0 represents the original clip’s volume level without adjustment.
Click the triangle next to Level to expand the effect options, and then use the slider to adjust the volume level.
A keyframe is automatically created at the beginning of the clip’s timeline in the Effect Controls panel.
Each time you move the current‑time indicator and make an adjustment, a new keyframe is created. You can also adjust the interpolation between keyframes by editing the keyframe graph. Repeat as needed.