AnvSoft Flash to iPod Converter is a powerful utility that convert Macromedia Flash SWF files to MPEG-4 files including movie clips, action scripts and audio in the Flash movies. It is designed to convert Flash SWF to MPEG-4 format playable on iPod. With Flash to iPod Converter, you can easily turn your Flash videos into memorable projects on your mobile devices such as Apple iPod, Sony PSP and Pocket PCs to share with family and friends.

How to Convert SWF to iPod :
Step1: Download the trial software, when this is finished install and run the software, a window like the one shown below should now be on your screen.



Step2: With the program open click file and choose the add one or more video files.



Step3: The box we've highlighted in red is the contents table, it will show all the files you've chosen to convert.



Step4: If you want to delete the file, please click "Remove".




Step5: Finally we're ready to convert, just click the "Convert Now!" button and the process will begin.



Step6: Well done you've successfully converted the files. Check the output folder to make sure you're happy with the results.



Flash to iPod Converter

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http://www.mp4kit.com

I also know Melodycan converter can solve this.

Found such good guide -http://www.ehow.com/how_2254836_save-convert-any-video-youtube.html