Apple Compressor 3 - Manual (Page 318)

Note: The more you reduce the clip image by cropping it, the larger the scale factor of
the output image will be (as the framing geometry conforms to the settings of the output
size ratio rather than to the source file settings). This effect is similar to zooming in on an
image, which results in larger pixels and overall image degradation. So make sure that
you don’t crop in so far that the image is enlarged past its original size relative to the
original size of the frame.
Source and Setting
View buttons
8 Select the filter that you want to adjust and make changes as necessary.
Note: The filter you select must have a checkmark next to it in the Filters list. Otherwise,
the filter won’t be applied to the setting.
Selected filter settings
are displayed in the
Preview window.
Setting selection
318 Chapter 26 Using the Preview Window