This add-on is the best video downloader I have found and used. It is kept up with by the developers as the video streamers make it more difficult to copy. If you are unsatisfied with the videos that have to be aggregated because of the small watermark on the top left you can purchase a license for a reasonable fee. It takes time time for the aggragation process vs those sites that are direct downloads but other methods to get these videos for your personal use offline are no where near as simple in my findings. Because these videos are for my own personal offline use the watermarks are non-consequential for the most part other than aesthetics. Yes, there have been some small changes over time, but changes will always be necessary to keep this add-on functioning. Great job to Video Download Helper. The best, most simple and did I say FREE, I have found.