What Is Rendering?

Any time Final Cut Pro must perform more calculations than your computer can handle in real time, you need to render. Rendering is the process of creating temporary video and audio render files for segments of your sequence that Final Cut Pro cannot play in real time. When you render a segment of your sequence, Final Cut Pro substitutes a render file for the segment during playback. Render status bars above the ruler in the Timeline indicate which sections can play back in real time and which segments require rendering.

Because rendering takes time away from the editing process, the goal is to render as little as possible. For more information about real-time playback, see Using RT Extreme.

Rendering is generally required for: