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63Compressor User Guide
• Details level: Sets the amount of detail in the output image. Double-click the value and
then manually enter a new value or drag the slider to set the value. This sharpening
control lets you add detail back to an image being enlarged. Unlike other sharpening
operations, the “Details level” property distinguishes between noise and feature details,
and generally doesn’t increase unwanted grain. Increasing this value may introduce
jagged edges, however, which can be eliminated by increasing the “Anti-aliasing level”
slider.
• Dithering: When selected, adds a certain type of noise to images to prevent large-scale
distracting patterns such as color banding. If your image has excessive noise after
rendering, deselect this checkbox.
Video effects
For a list of available video effects in Compressor, and instructions on how to add a video
effect to a setting, see Add and remove effects in Compressor.
Audio properties
• Channel layout: Use the pop-up menu to set the audio channel layout.
• 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.
• Quality: Use this pop-up menu to select the quality of the audio output.
• Bit rate: Use this pop-up menu to set the bit rate for the encoded audio.
• Bit rate strategy: Use this pop-up menu to select the strategy used to encode the audio.
There are four options:
• Constant bit rate: Uses the value set in “Bit rate” to determine the bit rate for the
encoded audio.
• Average bit rate: Uses the value set in “Bit rate” to determine the target average
bit rate for the encoded audio. This option provides a more consistent bit rate than
variable bit rate.
• Variable bit rate constrained: Uses the value set in “Bit rate” to determine the
maximum bit rate for the encoded audio.
• Variable bit rate: Encodes the audio using a variable bit rate determined by
Compressor.
• Data rate: Use the slider to set the number of kilobits per second (kbps) required to
deliver your audio file. Using a higher rate will produce a higher-quality audio file.
Audio effects
For a list of available audio effects in Compressor, and instructions on how to add an audio
effect to a setting, see Add and remove effects in Compressor.