To convert PDF to SWF, we may use the utility pdf2swf in SWF Tools. However, the feature of specifying the frame rate has not been documented yet. The other day Matthias Kramm told me this option just hided behind -s.
Usage: pdf2swf [-options] file.pdf -o file.swf
-h , --help Print short help message and exit
-V , --version Print version info and exit
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-p , --pages range Convert only pages in range with range e.g. 1-20 or 1,4,6,9-11 or
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-s , --set param=value Set a SWF encoder specific parameter.
?See pdf2swf -s help for more information.
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To specify the frame rate, we just need to use pdf2swf -s framerate=?.