Apple Final Cut Pro X (10.1.2) - Manual (Page 86)

Chapter 6 Play back and skim media 86
About background rendering
Rendering is the process of creating temporary video and audio render files for segments of your
project that Final Cut Pro cannot play in real time. When you add effects, transitions, generators,
titles, and other items that require rendering for playback at high quality, the render indicator (an
orange bar) appears below the ruler at the top of the Timeline.
Render indicator
By default, rendering begins in the background 5 seconds after you stop working and
moving the pointer in Final Cut Pro. Background rendering continues while you work in
a different application. You can turn off background rendering or adjust this setting in
Final Cut Pro preferences.
You can also manually control rendering for a project or a portion of a project, and you can
delete render files for one or more projects, events, or libraries to free up storage space. For more
information, see
Manage render files on page 429.
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