You can apply a Standard effect to a clip by simply dragging an effect’s icon from the Effects panel to a clip in the Timeline panel or by dragging the effect icon to the Effect Controls panel if the clip is selected. You can even apply the same effect multiple times, using different settings each time. Alternatively, you can view and adjust a clip’s effects in the Timeline panel by expanding its track and selecting the proper viewing options. You can also temporarily disable any effect, which suppresses the effect without removing it, or you can remove the effect completely. To view and adjust a selected clip’s effects, use the Effect Controls panel.
By default, when you apply an effect to a clip, the effect is active for the duration of the clip. However, you can make an effect start and stop at specific times or make the effect more or less intense by using keyframes.