Apple Compressor (4.1.2) - Manual (Page 24)

Chapter 4 Advanced adjustments 24
Setting properties
Common Audio Formats
The built-in AIFF File, CAF File, and WAVE File settings use the Common Audio Formats
transcoding format. This format encodes AIFF (Audio Interchange File Format), CAF (Apple Core
Audio Format), or WAVE (Waveform Audio File Format) files. You can also create custom settings
that use the Common Audio Formats transcoding format.
The properties of built-in and custom settings that use this transcoding format are located in the
General inspector and Audio inspector. These properties are described below.
Important: When you add a setting (or a destination that includes settings) to a job, Compressor
analyzes the source media and then automatically assigns the most appropriate setting
properties (based on the setting’s transcoding format and the characteristics of your source
media file). It’s recommended that you use the automatically assigned setting properties.
Setting summary
Displays the setting name and transcoding format, as well as an estimated output file
size. When you add a setting to a job or change the setting’s properties, this summary
automatically updates.
General properties
•
Name: Displays the name of the setting.
•
Description: Displays the description of the setting.
•
Extension: Displays the extension of the output file.
Tip: To output a file with a different extension, change the value in the “File type” pop-up
menu, described below.
•
Allow job segmenting: Job segmenting is not available for settings 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, or WAVE.
Retiming
This section contains one property:
•
Set duration to: Sets the processing algorithm used to adjust the frame rate during transcoding.
Select either of the following options:
•
[Percentage] of source: 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 downward arrow).
•
[Total duration]: 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 on page 69.
Audio properties
•
Channel layout: Use the 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
About audio channels on page 65.
•
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 the pop-up menu to manually set the sample size of the audio signal.
67% resize factor