The free version of Video DownloadHelper captures media across thousands of websites, but embeds strict limits on advanced data types.

If you proceed without a license, the resulting video file will often have a (a QR code or text overlay) in the corner of the video. To remove this watermark and unlock advanced features, a paid license is required.

There are other Firefox extensions that are completely free and open-source. One of the most popular alternatives is:

For tech-savvy users, you can often find the direct video URL by pressing F12 in Firefox, going to the tab, and filtering by "Media." Refreshing the page will often reveal the direct .mp4 link, which you can copy and paste into a new tab to download directly—completely free.