Annoying animated toolbar button Rated 1 out of 5 stars

Also takes a very long time (30 seconds or more) to recognize video, if ever, depending on the site. There are much better video downloader choices; I now use Flash Video Downloader.

This review is for a previous version of the add-on (4.9.12). 

Time is relative. Some, like you, might think 100ms (0.1 second) is very long. This is the average time Video DownloadHelper takes to recognize the vdeo and offer the file for download.