i used this tool convert QuickTime to swf and upload it on my web,if need u can try this tool
FLV to Video Converter Pro 2,it will help you greatly in converting flv to AVI, flv to MPEG, flv to MP4, flv to 3GP, flv to MOV, flv to WMV, flv to MP3, flv to flv, flv to WMA, flv to AAC, flv to DV etc.
if need u can google it ,hope it can help u.