Common Audio Formats presets in Compressor
Four built-in presets in Compressor use the Common Audio Formats transcoding format: AIFF (Audio Interchange File Format), CAF (Apple Core Audio Format), FLAC (Free Lossless Audio Codec), and WAV (Waveform Audio File Format).
Note: You can create custom presets that use the Common Audio Formats transcoding format.
The properties of built-in and custom presets that use this transcoding format are located in the General inspector and Audio inspector (described below).
Preset summary
The top section of the inspector displays the preset name and transcoding format, as well as an estimated output file size and a summary of audio properties. When you add a preset to a job or change the preset’s properties, this summary is automatically updated.
General Properties
Name: Displays the name of the preset.
Description: Displays the description of the preset.
Extension: Displays the extension of the output file (.aiff, .caf, .flac, or .wav).
Tip: To output a file with a different extension, change the value in the “File type” pop-up menu, described below.
Allow export segmentation: This checkbox is dimmed because job segmenting is not available for presets that output only an audio file.
Default location: Choose an item from the pop-up menu to set the default save location for transcoded files.
File type: Choose a file type from the pop-up menu (AIFF, CAF, FLAC, or WAVE).
Retiming
Sets the processing algorithm used to adjust the frame rate during transcoding. Select one of the following options:
Set to percent of source using: Modifies the output clip’s speed by a percentage of the source clip’s speed. Enter a value in the percentage field or choose a preset value from the adjacent pop-up menu (with a down arrow).
Set to: Sets the duration of the clip. Enter a timecode duration in the field or click the arrows to increase or decrease the time.
For more information, see Retime video and audio using Compressor.
Audio Properties
Channel layout: Use this pop-up menu to manually set the type of audio channel layout. For more information about audio channel layouts, including the surround sound channel layout, see Audio channel layouts in Compressor.
Sample rate: Use this pop-up menu to set the number of times per second that music waveforms (samples) are captured digitally. The higher the sample rate, the higher the audio quality and the larger the file size.
Sample size: Use this pop-up menu to manually set the sample size of the audio signal.
Compression: Use this pop-up menu to manually set the amount of compression the FLAC encoder uses to encode the audio signal. This preset is only available for FLAC file types.
Audio Effects
For a list of available audio effects and instructions on how to add an audio effect to a preset, see Add and remove effects in Compressor.
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