How to save a movie file stored in RAM

Hello Friends,
I have a question to ask. I am trying to save a movie file (quicktime) which is streamed from internet but then it is saved in RAM only. I would like to snatch and save the movie file from memory. The video file is there as long as computers is on.

Is there a software or other method ( where for example xp store the file somewhere) that I can use to save these files.

By the way the file is not in internet temperary folder. It used to be that quicktime movie where saved in temp folder but now they are stored in RAM.

Any wise imput is greatly appreicated.