[Waraqa]

There is an official download option inside the app. If they limit the download speed to the watching time, it won't be useful.

[alright2565]

The official download option doesn't download it to your filesystem as a file. It just lets you watch the video offline in the official app/website. Just tested it now.

[soared]

Meaning the video file exists in your file system somewhere, so downloading at a higher speed than possibly viewing the video is an existing functionality in the app.

[mschuster91]

If you're on iOS no way to access it, and I think on Android it's in protected storage as well.

[Biganon]

This option is only available to premium users afaik