Mpeg-2 – Apple Compressor (4.1.2) User Manual
Page 37
Chapter 4
Advanced adjustments
37
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Joint stereo: Select the checkbox to have one channel carry the information that’s identical on
both channels, and another channel carry unique information. At bit rates of 160 kbps and
below, this setting can improve the sound quality of your converted audio.
•
Smart encoding adjustments: Select the checkbox to have Compressor analyze the source file
and the setting’s encoding properties to maximize the quality of the output file.
•
Filter frequencies below 10 Hz: Select the checkbox to have Compressor remove inaudible
frequencies from the source file and output a smaller and more efficient file without
perceptible loss of quality.
Audio effects
For a list of available audio effects and instructions on how to add an audio effect to a setting,
see
on page 74.
MPEG-2
The built-in MPEG Files settings (including the built-in MPEG-2 for DVD setting) use the MPEG-2
transcoding format. This format encodes MPEG-2 stream files for SD DVD and Blu-ray authoring.
Note: This setting encodes only a video file. Dolby Digital is the recommended audio setting. For
more information, see
on page 25.
You can also create custom settings that use the MPEG-2 transcoding format.
The properties of built-in and custom settings that use this transcoding format are located in the
General, Video, and Audio inspectors. 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
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Name: Displays the name of the setting.
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Description: Displays the description of the setting.
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Extension: Displays the extension of the output file.
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Allow job segmenting: If you’ve set up distributed processing, select this checkbox to have
Compressor process the output file using your shared computer group. For more information,
see
Transcode batches with multiple computers
on page 98.
•
Default location: Select an item from the pop-up menu to set the default save location for
transcoded files.
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