This Add-on could work good, but the reason we use it is to get a video downloaded from the web. It does do that, but then it puts a huge QR code on the video that takes up most of the top-left corner of the video. It turns out that the QR code will distract A LOT from the video you are trying to save. Don't use this Add-on if you want an unadulterated version of the video you are downloading.