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Instead of laboring many hours tracing a bitmap in Illustrator or Freehand, you can use a little-known Flash tool to convert a bitmap into a vector: the Trace Bitmap Tool. There are two reasons you may prefer vector over bitmap in your Flash movies. One: to achieve a cool look. Two: to lower your file size.
[ the original bitmap ]
[ the vectorized version ]
[ this window will pop up ]
Color threshold
If the difference between the RGB values of the bitmap is less than this number, then Flash will consider them the same color in the final vector graphic. High numbers will decrease color detail and file size.
Minimum area
This is the size of the block that Flash scans while converting. Color threshold affects color detail, whereas minimum area affects overall detail.
Curve fit
This determines the smoothness of the color blocks' borders. A tighter fit will increase quality, while a smoother fit will decrease file size.
Corner threshold
This is almost the same as curve fit.
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