component
Media files are made up of building blocks called components. Most clips that you work with in Final Cut Pro include a video component, one or more audio components, or both. You can work with a component in a clip (for example, to add effects), but you can’t change the contents of the component itself.
![A diagram showing a media file with one video component and two audio components](https://help.apple.com/assets/5FA56A02680CE23013639A0B/5FA56A04680CE23013639A20/en_US/50e868d9a97b416bb0d6d23fd8c7d7f2.png)