[ninjagame]

j_cool,

Thanks again for your reply!
Actually, MacOS is based on Unix which is not quite the same as Linux but close enough. So, the command line is indeed roughly the same.
However, the method you suggest is way too complicated to be really convenient and, therefore, useful for me. Please don't get me wrong: If I'd make my living doing this, I wouldn't hesitate to get deeply into it and to get really proficient. In that case, I would long ago have done it, just to have an alternative.
But since I'm doing this purely for my enjoyment and recording just for convenience (in fact, there are several livestream players I could use to watch live but I simply don't have the time to watch a program when it's aired and VOD is available only for one week or so after airing which I more often than not can't make either), what I'd need is a GUI into which I can input the livestream URL in order to get the video livestream and a button to click or a command shortcut to start and stop recording.
Having said that, I will certainly try your method one day when I can spare the time.

Thanks a lot!

- ninjagame