Problems with audio quality – Apple Final Cut Express 4 User Manual

Page 1110

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1110

Part XIII

Appendixes

You’re having problems playing a reference movie.
 If you encounter playback problems with a reference movie, export the media as a

self-contained movie (which includes all its media files), and not as a QuickTime
reference movie.

To do this, make sure there is a checkmark in the Make Movie Self-Contained
checkbox in the Export dialog. For more information, see “

Exporting a QuickTime

Movie File

” on page 1015.

Video does not play through to the computer screen.
 Make sure cables from the video device are properly connected to your computer.

You experience poor playback and stuttering video when trying to edit.
 Make sure you are not editing with media that uses keyframe compression, such as

Sorenson or Cinepak.

Problems with Audio Quality

If you experience the following issues with audio quality, try these solutions.

You don’t hear audio through your camcorder speakers.
 Make sure your cables are properly connected.
 If you are scrubbing audio in the Audio tab of the Viewer, increase the volume of the

computer’s audio output.

You don’t hear audio on your computer’s speakers when playing video from your
camcorder or deck.
 Make sure the speaker’s cables are properly connected.
 Make sure your audio cables are properly connected.
 If you’re monitoring your audio from your computer, make sure that Mute is off, and

that the computer’s volume is adjusted to a reasonable level.

 Make sure the Preview option is selected in the Clip Settings tab of the Capture

window, and that the appropriate audio output is selected in the Sound pane of
Mac OS X System Preferences.

Captured audio sounds distorted and “crackly” during capture.
 During capture, make sure that you always set the Final Cut Express sample rate to

that of your recorded source material. Mismatched sample rates can result in pops
and crackles in the audio, incorrect audio/video sync, and generally diminished
sound quality. These rates are:

 32 kHz if you’re capturing media from a DV camcorder that was set to 12-bit recording
 44.1 kHz if you’re capturing digital audio from certain DAT or CD players.
 48 kHz if you’re capturing from most digital video formats.

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