Challenges with external monitoring – Apple Final Cut Pro HD (4.5): New Features User Manual
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Chapter 7
External Audio and Video Monitoring
Full-screen
The video is scaled to fit the display in at least one dimension. If the aspect ratio of the
video signal and the computer display do not match, the video on the display is
letterboxed (black on top and bottom) or pillarboxed (black on sides) as necessary.
•
Pros: This format gives you the biggest picture possible and maintains the proper
aspect ratio.
•
Cons: Scaling artifacts may be noticeable when viewed up close.
Raw (1:1)
This mode shows the video data with as little processing as possible. This can be useful
for engineering evaluations of the image. No scaling is done whatsoever.
•
Pros: More accurate assessments of video quality can be made.
•
Cons: Not useful for general viewing. No scaling or pixel aspect ratio adjustments are
made, even when the video is larger than the display.
Note: For example, a 720p frame (1280 x 720) showing in raw mode on an 800 x 600
display only shows 800 x 600 of the image.
To view Final Cut Pro video output on a computer display connected to your
computer:
1
Choose Final Cut Pro > A/V Settings.
2
Click the A/V Devices tab.
3
Choose one of the display options from the Playback Output Video pop-up menu.
4
To listen to audio in sync with video output on a computer display, make sure the
audio frame offset value is set to 0. For information about how to set the frame offset
for audio/video latency compensation, see “
Compensating for Latency With Frame
Challenges With External Monitoring
No matter what method you use for external monitoring, all digital video and audio
output cards (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 between external
devices and the computer display and speakers can be confusing, especially when you
are doing precise editing.
UP01022.Book Page 100 Tuesday, March 23, 2004 7:32 PM