Apple Final Cut Pro 7 User Manual
Page 241
• Because of the refresh rate of LCD computer displays, 1080i60 and 720p60 material
may exhibit temporal artifacts during playback.
• Interlaced media is scanned progressively at the frame rate instead of the field rate.
Therefore, when viewing formats such as 1080i60 or SD NTSC or PAL video, both fields
are scanned simultaneously, which may result in interlacing artifacts.
• If you need to change your display resolution, do so prior to opening Final Cut Pro.
• LCD Cinema Displays have a longer decay period between each frame when compared
to lines being scanned on a CRT. At times, the same video image may be visible onscreen
for a period of up to four to seven frames.
• Turning on Digital Cinema Desktop Preview playback can reduce the number of real-time
effects available in your sequence. However, the real-time status of these effects is not
updated in the Effects menu or the Effects tab of the Browser.
• Refrain from pressing the mouse button upon initially enabling Digital Cinema Desktop
Preview (especially in Single User mode).
• Exposé is not supported with Digital Cinema Desktop Preview.
• Graphics files with a resolution of 1920 x 1200 and larger may not be displayed properly.
• Digital Cinema Desktop Preview must be turned off when performing a Print to Video
operation.
• If you do not have a second display connected to your computer, only the Digital
Cinema Desktop Preview - Main option is available.
Compensating for Video Latency by Specifying a Frame Offset
No matter what signal format you use for external monitoring, all digital video and audio
interfaces (including FireWire) introduce inherent processing delays (known as latency)
to signals sent out of the computer. External video and audio coming from the built-in
FireWire port or third-party interface may be several frames later than the video on your
computer display (in the Viewer or Canvas). The latency, or offset, between different
devices can make precise editing difficult.
By changing the frame offset value in Final Cut Pro, you can compensate for the delay
between your computer display and external video and audio outputs. Frame offset is
active only when your sequence real-time effects are handled by Final Cut Pro. For
information about specifying settings in the Effect Handling tab of the System Settings
window, see
To set the frame offset between the computer display and the external video and
audio outputs
1
Choose Final Cut Pro > System Settings.
2
Click the Playback Control tab.
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Chapter 14
External Video Monitoring