Recently I wanted to save a Real Media video stream so I can see it later on another computer. I was using a amd64 Ubuntu and I could not even see the stream since there is no 64 Real Player (or codecs). After a bit of googling and some trial and error I managed to save the stream using mplayer. Here is the command:
$ mplayer -dumpstream rtsp://example.com/path/clip.rm -dumpfile clip.rm
Some servers allow http access to the same file, so first just replace rtsp with http and try this url in a browser or with wget.
The .rm url in most cases is wrapped in a play list with the extension .ram. Just save the .ram file locally and open it in an editor, you will see the rtsp .rm url there.



