5

• PDF files
Audio Formats
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. Multichannel audio files are also supported.
Motion supports the following audio file types:
• AAC (listed in the Finder with the .m4p file extension)
• AIFF
• CAF
• WAV
Important: You cannot import rights-managed AAC files, such as those purchased from
the iTunes Store.
For more information about the file formats supported by Motion, go to the Motion
website at http://www.apple.com/finalcutpro/motion.
Popular Video Codecs for File Exchange
You can use video compressed with nearly any video codec in Motion. When you work
on a project in Motion, it is best to use high-quality codecs with a minimum of
compression. Highly compressed video files, such as those compressed using the MPEG-4
or Sorenson codec, are likely to be unsuitable for creating high-quality work.
For purposes of media exchange between applications, not all codecs support alpha
channels. Alpha channels define transparency in a clip, and are useful if you’re delivering
an effects shot for use in someone else’s composition. If you are required to export a
composition using a codec with no alpha channel support, you must export the alpha
channel as a separate grayscale media file.
Note: Motion processes color in the RGB color space. Any clips that were captured or
recompressed using a Y′C
B
C
R
-aware codec, such as DV, the Apple ProRes family, or
Uncompressed 8-bit 4:2:2, are converted to the RGB color space when used in a Motion
project. Clips exported from Motion using a Y′C
B
C
R
codec are converted back into the
Y′C
B
C
R
color space.
1423Appendix B Video and File Formats