Parse videos from VK that hang on the site?

Question

PHP

Good evening / afternoon,
I set the task of parsing a video from a site (a site with videos). The video is located on the VKontakte servers themselves.
Problem:
Through firebug found the link to the video. It's not in the html code itself.
Here

and here

Question:
Is it possible to do this through simple_html_dom or something more extensive is needed.
In which direction to look for information for parsing. Need info as this is my first time doing this. I can pull out simple information such as pictures or text.
Question2:
How to parse not only the main page of the site, but all that are.
Thanks in advance to everyone who will respond.

Answer 1

Durov will be offended that you are ddosing his site.
In general, use console browsers like phantomjs and do what you want with them.

Answer 2

I can write to order...