If you want to publish your video files as flash on your blog or website, then Free Flash Converter is a good application for the same. It can convert .avi, .mpeg, .mpg, .mp4, .m4v, .wmv, .asf, .mov, .qt, .3gp, .3g2, .dvr-ms. .flv video files to .flv and .swf files to publish on your website. The interface is pretty simple and easy to use. Add the files into the conversion window, select the output format and folder and then click convert.
Free Flash converter includes 80+ variants of flash players. Video to Flash converter also has provision to trim the video, so that you can selectively convert video to flash. This application is free of cost for both personal and commercial use.