Just fire up wireshark
It will have to come from somewhere, the true link should be somewhere in the packets, these are often generated on-the-fly.

Thanks for the tip, I installed it and I'm trying to understand how it works.

I'm not trying to bypass the password, I am a registered user. I was just trying to download the video.

I tried recording the screen with quictime but quality is not perfect, maybe my macbook is too old and I tough that maybe there was a way to download it so I can still work.

Hello, I'm new here so I don't know if it is okay to ask this kind of question here. If it's not, I'm sorry.

I would like to be able to download a video that is shown in a javascript popup. I've tried all the downloader software out there and no one seem to detect it. The URL of the video is like this:

http://www.ANYURL.com/liveshowpopup?scr=48.81.225&video_ref=1a2b3cxz9973a933289e9a2105586acd6f373a27b1a68bb3&a=2&u=1021393&2h2=9jbq203#

I'm no expert in IT so I was looking for something easy, but maybe it does no exist. What I do know is that the video is not detected by any software because(?) the URL does not include any video format. This is not livestream.