Somebody know how i can download these videos?

If something WORK tell me, thanx

You can try also internet download manager.
I got good results downloadin videos from various sites

This extension NEVER fails.... It's been great

Her name? Video or something

I got a similar Video DownloadHelper.........and badassdownloader refuse, like the others...but thanx

There is an extension called Video Downloader Prime.

It will help you download vids like this, but it will not download vids from sites like pornhub or xhamster. You've to use some other download service like badassdownloader or research on your own about that.

For Chrome:
https://chrome.google.com/webstore/detail/video-downloader-prime/gipjangphp
hajpkddogjcpgaoiidennb

For Firefox:
https://addons.mozilla.org/en-US/firefox/addon/video-downloader-prime/