How can I Join and Convert F4F Files?

I have downloaded some F4F files from a news site. But VLC player and the Flash player cannot open them. I Googled and found these information:

• F4F is Adobe's fragmented MP4 file format for HTTP Dynamic Streaming.
• A tool called F4F Packager could convert an F4V file to several F4F files and a manifest file(F4M).

Tried some downloader apps and toolbars, but few of them could handle such F4F files. Some screen capture tools is capable of recording the F4F streaming. However i prefer to downloading the original video to keep the quality. Finally, i tried a tool that i installed to download YouTube videos- Bigasoft Video Downloader Pro and got a upgrade window. It is excited to find they add a new F4F Merge panel and it works!

Then i read the upgrade info and it seems new Video Downloader Pro is capable of downloading F4F streaming directly! So there is no need to use other toolbars to rip F4F fragments. Tried Midici, NBC, NBCSports, Francetv, CTVnews, all works. Nice tool!