4.5

39Compressor User Guide
• Compression: Use this pop-up menu to manually set the amount of compression the
FLAC encoder uses to encode the audio signal. This setting 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
setting, see Add and remove effects in Compressor.
Dolby Digital settings in Compressor
The built-in Dolby Digital settings in Compressor (in the Create Blu-ray and Create DVD
destinations, as well as in the built-in AC-3 and EC-3 audio settings) use the Dolby Digital
transcoding format. This format encodes Dolby Digital (AC-3) and Dolby Digital Plus (EC-
3) audio files that contain multiple audio channels, including 5.1 surround sound.
Note: You can also create custom settings that use the Dolby Digital transcoding format.
However, the built-in Dolby Digital settings (in the Settings pane) analyze your source
media and assign optimal properties to ensure the best possible transcoding results.
The properties of built-in and custom settings that use this transcoding format are located
in the General inspector and Audio inspector (described below).
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
is automatically updated.
General properties
• Name: Displays the name of the setting.
• Description: Displays the description of the setting.
• Extension: Displays the extension of the output file (.ac3 or .ec3).
• Allow job segmenting: This checkbox is dimmed because 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 (Dolby Digital or Dolby Digital Plus,
an enhanced version of the Dolby Digital audio compression technology).
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.