Playback preferences in Final Cut Pro

Playback preferences affect playback and rendering performance in Final Cut Pro.

The Playback pane of the Preferences window

Note: For information about controlling playback quality and performance, including switching between original or optimized media and proxy media, see Control playback quality in Final Cut Pro.

Rendering

Background render: Select this checkbox to turn on Final Cut Pro rendering operations when the system is idle.
Start after x seconds: Use this value slider to set the amount of time your system is idle, in seconds, before Final Cut Pro begins background rendering.

Render/Share GPU

Render/Share GPU: Use this pop-up menu to choose which graphics processing unit (GPU) to use in Final Cut Pro when rendering or sharing. This choice affects only rendering and sharing; real-time effects use the default GPU.

Playback

Create optimized media for multicam clips: Select this checkbox to automatically transcode multicam clip video to the Apple ProRes 422 codec, which provides better performance during editing and faster render times.
If a frame drops, stop playback and warn: Select this checkbox to have Final Cut Pro warn you when frames are dropped during playback.
If frames drop due to disk performance, warn after playback: Select this checkbox to have Final Cut Pro warn you if frames were dropped because of disk performance.
If frames drop on VR headset, warn after playback: Select this checkbox to have Final Cut Pro warn you if frames were dropped on a connected VR headset display.

Pre-Roll Duration

Pre-Roll Duration: Use this value slider to set the amount of time to play before an audition or before the skimmer or playhead position when using the Play Around command.

Post-Roll Duration

Post-Roll Duration: Use this value slider to set the amount of time to play after an audition or after the skimmer or playhead position when using the Play Around command.

Player Background

Player Background: Use this pop-up menu to choose a background for the viewer. The color you choose will be visible in the case of partially or completely transparent clips, or clips that don’t fill the frame completely.

A/V Output

A/V Output: Use this pop-up menu to choose an external audio/video device or monitor for output. See Play media on an external display in Final Cut Pro.
Show HDR as Tone Mapped: Select this checkbox to compress bright image content and reduce the apparent dynamic range of the video to fit the viewable range of the external video device. This checkbox is available only for external displays connected using an HDMI or Thunderbolt 3 cable on systems with macOS Catalina 10.15 or later. This option is disabled if a connected Pro Display XDR is set to a reference mode preset in Displays preferences, such as the HDR Video preset.

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Final Cut Pro User Guide