How to remove such server settings?

Question

Nginx

In general, there are video files on the server that I want to download to my phone and later use in the application. In general, the video is played in html5 video, but when I try to download it through some kind of grabber, I get an error not enough space, although as you understand, there is enough.
What could be wrong with the server settings?
Here is a link to one such video:
media.pmc.tv/videos/saeed-shayan/banoo-480p.mp4
PS. Perhaps a trifling question, but I'm not strong in the backend and servers, but I need to do it :)

Answer 1

Ubuntu 15.10+Chrome 46.0.2490.80 (64-bit) quietly downloaded.