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Maybe you have to convert the swf file back to MP4 file using a SWF to video converter. Here is a giveaway of swf to 3gp converter, you can convert your swf files to 3pg and then use the free video...

Wikipedia has a list of video hosting services, hope it helps.
http://en.wikipedia.org/wiki/Video_sharing_website

I think you should use a professional swf to flv converter since sometimes free solutions cannot solve all the problems.
I have been using the swf to flv converter from Moyea for months to convert...