Thank you very much for the help so far! I've tried to experiment on a lot of shows, and the method you have stated seems to work on "CITV" shows; but not any other channels. This must be due to that CITV doesn't have a small clip playing before the show.
Let's try another link which lasts this time. (
http://www.itv.com/itvplayer/video/?Filter=297536).
I used the rtmpsrv/rtmpexplorer, but it does not seem to come up. Also the rtmpsuck leads to a zero size file. Any suggestions would be greatly appreciated! Thanks!