Yes, you can customize every SWF parameter setting as you need by clicking the “Show More Options” button. You will see SWF parameters are separated into 5 groups: image, shape, video, audio and font. You may get to know the meaning of each parameter in the user guide page.
Besides, you can save your own settings as new profiles for future usage.
This FAQ is about: Frequently Asked Questions, SWF Compressor for Mac