I tried half a dozen different video downloader extensions in both Firefox/Waterfox and Chrome (including FlashGot), but only Ant Video Downloader was able to get the job done!

I am now able to successfully download private Wistia videos with one click. Thank you!

Also, there is an unlisted Chrome extension, which you can download from here: https://www.ant.com/video-downloader/ff-installed

Works on YouTube and other Web pages, does not leave water-mark. Needs auxillary software to be installed

good

Best app for downloading video

It's been weeks, yet still can't get to work. When is compatible version for Mac ready? I've exhausted other attempts but in vain. Please do something!

rapido

It works. After you install this extension, you must also read the instructions for further steps to download the "Companion NATIVE APP" to your PC to make it download better. Also there is a Video on Youtube on how to do it here: https://youtu.be/yZAoy8SOd7o. Also the "Video DownloadHelper" is a good Addon to download videos as well.

After trying 14 add-ons that didn't work, I've found one that does. It worked on Youtube and another site I use. You do have to install the AVD file.