Playing vector based SWF files

I have 20 SWF files containing vector based animations, grabbed from a site three years ago. I had kept a very small shockwave player in the same folder and it played them, but then deleted the folder, and only managed to re-download the SWF files subsequently. Now I cannot find a program that plays them or able to convert them to a more widely used format ( avi, mp4 etc ). They won't play in the Adobe Flash Player, Gom, VLC, nor any of the alternative programs I've downloaded, and I've tried a few free online conversions as well - none convert or play. They see the SWF files, but cannot process them. I presume it's because because they are vector based. Can anyone suggest a small player, hopefully portable so I don't have to install it ? I would have attached one of the SWF files to this post, but even this system doesn't recognise them !

Thanks