Apple Final Cut Pro 6 - Manual (Page 323)

322 Part IV Logging, Capturing, and Importing
To disable the non-optimized media warning when importing files into Final Cut Pro:
1 Choose Final Cut Pro > User Preferences.
2 Click the General tab.
3 Deselect “Warn when importing non-optimized media.”
Final Cut Pro will no longer warn you when it discovers a media file that it cannot
automatically optimize.
About Importing Audio Files
Final Cut Pro allows you to import audio files from other music and sound editing
applications, as well as audio from audio CDs.
When you import audio files into Final Cut Pro, you need to make sure that their
settings match your sequence settings. If your audio clips’ settings don’t match the
sequence settings, you can still edit with them, but Final Cut Pro does real-time
conversion which reduces overall playback performance. This chapter discusses the
types of audio file formats you can import, as well as methods for converting audio files
so they match your sequence settings.
For more information about digital audio, see Volume III, Chapter 1, “Audio Fundamentals.”
What Kinds of Audio File Formats Can Be Imported?
Final Cut Pro allows you to directly import any audio file format compatible with
QuickTime. However, only uncompressed file formats should be used for editing.
Recommended Audio File Formats
For best performance, use one of the following uncompressed audio file formats when
editing in Final Cut Pro:
 AIFF or AIFC
 WAVE or Broadcast Wave Format (BWF)
 Sound Designer II
 Single-track or multitrack QuickTime movies containing uncompressed audio
Natively, Final Cut Pro captures to QuickTime movie files with one or more audio tracks.
Audio File Formats That Require Real-Time Processing for Playback
The following formats should be avoided for editing in Final Cut Pro:
 MP3, AAC, and Apple Lossless Codec
 QuickTime movies containing compressed audio, such as MPEG-4 and H.264 files
 Multiplexed video and audio streams such as MPEG-2 program streams and DV
Stream files (this format is created by iMovie during capture)