So far so good. I thought there was a problem with the very first video i tried to download. However, it looks like there is something blocking the add on from working on certain videos. It appears to prevent other downloaders from working as well on the same video so i can't fault this one.
Fast, simple, troublefree MP4 downloader. Button shows in address bar on YT pages, it downloads the main video. Best out of several tried. Does what it says. Choose destination and available resolutions (sometimes more than 1080p, you can choose lower to save file size). When subtitle download comes out it will be 10/5 stars.
I tried many such type of add-on & this one is the best by far, first of all it gives you the option to download on any resolution when some other I tried only gave option for lower than max resolution, also the download take full advantage of my connection speed & the download is super fast, I highly recommend it!