You can download videos from almost every source. So It is a very good add on.

Why can't I add Video DownloadHelper to my Firefox browser version 66.0.3? This was a really helpful add-on. Now it says to check my connection when trying to add it on. My connection is fine.

cette application est tres pratique

Now watermarking videos unless you pay a fee. Forget it.

muito bom o aplicativo,

Très pratique et intuitif.