Apple Motion 2 - Manual (Page 174)

174 Chapter 2 Creating and Managing Projects
From within Motion, you can select an audio file and open Soundtrack Pro to modify
the audio file. Once saved in Soundtrack Pro, the file is automatically updated in
Motion. For more information, see “
Using Soundtrack
Pro With Motion
” on page 897.
You can freely import audio clips with different sample rates and bit depths. When you
do, Motion resamples any audio tracks that need it to the sample rate and bit depth
currently in use by your computer. The default is 16-bit, 44.1 kHz float for the built-in
audio interface. If you use a third-party audio interface, audio is remixed to the sample
rate and bit depth used by that device.
You can import audio files with sample rates up to 192 kHz, and with bit depths up to
32 bits. Mono and stereo files are supported. Multi-channel audio files are also
supported.
Motion supports as many layers of audio as you want to use in the Audio Editor,
although mixing many audio tracks together may affect playback performance. In the
Audio Editor, you use the same tools and commands to edit audio objects as you use in
the Timeline Layer list. Each audio layer also has individual settings for level and pan, so
that you can mix a group of tracks together for stereo output.
For more information about file formats supported by Motion, see “ Video and File
Formats ” on page 941. For more information on using audio in Motion, see “ Working
With Audio ” on page 877.
A seamless way to browse for and import music from your iTunes library is to use the
Music category in the Motion Library. For more information, see “
Adding iTunes and
iPhoto Files From the Library ” on page 178.
Note: You cannot import rights-managed AAC files, such as those purchased from the
iTunes Music Store.
Adding Media to Your Project
Once you’ve created a new project, the next step is to add media files to your
composition. All media types—movie clips, still images, audio files, or other objects
appearing in the Motion Library—are added to your project using the same methods.
Note: Layered Photoshop files have additional import options available from the drop
menu. For more information, see “
Adding Layered Photoshop Files to a Project ” on
page 177.
The Link Between Motion Objects and Media Files
Prior to learning how to add media to your Motion project, it’s important to understand
the correspondence between objects and source media. Every time you add a file to
your project, you create a link between the object you see in the Canvas and its
corresponding media file on disk.
01112.book Page 174 Sunday, March 13, 2005 10:36 PM