There are several ways to tweak quality; one being the "-j" switch (setting the JPEG quality with 0: poor, 100:best) and anotherone the zoom paramater (resolution in dpi can be set)
A complete list of all switches and parameters offered by pdf2swf can be found in this paper:
The call of the pdf2swf converter is (actually) in row 64 of the pdf2megazine.bat converter script, and an example looks like this:
"%PDF2SWF%" -q -t -T 9 -j100 -O1 -s internallinkfunction=megazine.PDFlinkHandler -s zoom=100 -G -p %%i -f "%from%" "%to%%%i.swf"
-j100 sets jpg conversion artifacts to a minimum, but increases file size.
-s zoom=100 sets resolution from 72 dpi (the default) to 100 dpi.
This increases conversion time and file size signigicantly
Those are just 2 examples to show the general use of these parameters and switches.
Please download the complete list, open pdf2megazine.bat in an editor (e.g. notepad++) and feel free to modify the settings.
Here the switches and parameters as screendump (higher quality as pdf file under above link)




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Tom