Apple Final Cut Pro HD (4.5): New Features - Manual (Page 37)

Preface New Features in Final Cut Pro HD 37
New support for Audio Units
Final Cut Pro includes a set of Audio Units filters that you can use to adjust your
audio clips. The Audio Units format is the standard Apple audio plug-in format for
Mac OS X applications.
Third-party Audio Units are also available; before purchasing third-party Audio Units
filters for use with Final Cut Pro, check with the third-party manufacturer to make sure
they’re compatible. Currently, Final Cut Pro only works with Audio Units filters that are
capable of accepting mono audio as input, and can output a mono signal. Also, certain
Audio Units filters that don’t support certain properties required by Final Cut Pro for
real-time playback will require rendering before playback. For information on how to
install third-party audio filters, see the information that accompanied them.
Rendering nested audio
When you add a nested audio sequence to a sequence in the Timeline and then render it,
audio levels of individual channels are not reflected during playback in the Audio Mixer. A
rendered nested audio sequence is mixed down to a stereo pair. Final Cut Pro 4 saves
processing at the track level by reading the output only. This is also why you can’t
perform mixer automation within a rendered nested audio sequence.
Effects
New real-time variable speed effects
You can now apply variable speed to a clip. Also referred to as time remapping, this
allows you to dynamically alter the speed of a clip, alternating among a range of
speeds, in forward or reverse motion, throughout any duration you specify. Variable
speed allows you to create sophisticated motion effects in which subjects appear to
smoothly shift across a variety of different speeds, with hard or gradual transitions
between each change. Speed changes you apply to clips in your sequence play back in
real time. There are two ways you can make variable speed adjustments.
• Timeline: One of the simplest ways to make variable speed changes is to use the
Time Remap tool in the Tool palette to make adjustments to clips directly in the
Timeline. As you work with this tool, an outline of your clip appears that shows you
which source frame in the clip is being remapped to what time. Optionally, you can
choose to display speed indicators and a keyframe graph underneath that clip’s track
in the Timeline, to help you see what you’re doing.
• Time graph: You can also add, subtract, smooth, and adjust time remap keyframes
using the time graph of the keyframe editor in the Timeline or in the Effects tab of a
clip in the Viewer.
UP01022.Book Page 37 Tuesday, March 23, 2004 7:32 PM