How to convert swf files

I have a .swf file, and I want to convert it to flv file to play it on my flv player. My friend recommends me iWisoft swf to flv converter. It can convert swf to flv, swf to avi, swf to mpeg, swf to mp4, swf to mp3, swf to wmv and various formats. If you just need to make flv files from your swf files, iWisoft swf to flv converter can do it well