Which of the following describes special effects in video?

Special effects in video are typically applied to enhance the visual presentation or create a particular atmosphere, and they can indeed be applied onto a single clip. This means that the effects can modify attributes such as color, motion, or texture for that specific piece of footage, enabling a more focused and controlled application of effects tailored to the content of that clip.

Applying effects to a single clip allows for greater creativity and precision in post-production. For example, if a video clip features an explosion, applying a special effect specifically to that clip helps create the intended dramatic impact without affecting the other clips or overall narrative.

In contrast, the other options suggest broader applications that either don’t align with how special effects are used in video editing or focus on audio, which is not applicable to video-specific special effects. Thus, the option that pertains to single-clip application emphasizes the pinpointed modifications that special effects can provide in video editing.