Apple Compressor 3 User Manual download pdf (Page 263)

• Alpha: This slider sets the watermark image opacity. Choose between 0 and 1. A value

of 0 makes the watermark image completely transparent, while a value of 1 makes it

completely opaque.

• Repeat checkbox: Used when you choose a clip as the watermark, this checkbox allows

you to have the watermark clip loop its playback. If you don’t select this checkbox, the

watermark clip plays until its end and then disappears.

• Choose button: Click this button to open the file selection dialog and select a stored

watermark movie or still image.

Audio Filters Tab

Compressor includes the following audio filters.

Important: The audio filters are not available when audio is set to “Pass-through” in

QuickTime settings. See About the QuickTime Movie Encoder Pane for more information.

Dynamic Range

Allows you to dynamically control a clip’s audio levels by enhancing the quieter parts

and lowering the louder parts. This is also referred to as audio level compression.

• Soften Above: Audio above this level is reduced to the level set by the Master Gain.

• Noise Threshold: Sets the level of what is considered noise. Audio at this level and above

is dynamically boosted to the level set by the Master Gain. Audio below this level is left

as is.

• Master Gain: Sets the average level of the dynamically compressed audio.

Peak Limiter

Sets the level of the loudest audio allowed in the clip.

• Gain (dB): Sets the level above which louder peaks are reduced.

263Chapter 22 Adding Filters to a Setting

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Apple Compressor 3 User Manual Page 263