Not work. I would rather use online YouTube downloaders.

Re: YouTube Downloader
It actually didn't work for me. After that, I found a free online tool called 2Conv. It helps me save YouTube videos in MP3, MP4 and AVI format. If a certain video cannot be downloaded by 2Conv for some reason, I would use Joyoshare Screen Recorder I installed before as an alternative to record videos in 1080p without limitations. 2Conv is great. I like it.