For RTMP, I already tried RTMPDump. It's very difficult and complicated to use in the terminal. Is there a GUI-based alternative?

For MMS, I already tried Firefox's plugin, and some download manager. It downloads only a junk file or stream file, not full at all.

And saving with VLC media player, it's working, but it takes a very long time to do (I think VLC media player is converting the file format after the download. Can I save without converting?)