As we all know that Youtube is the biggest video library consist of the videos of almost every category hence it is a big place for entertainment. So inspite of watching the video, sometimes it is better to download it. Hence Youtube downloader seems to be a good stuff for that but if you use it then you may find many issues with it, one of them is that if a video is not completely downloaded then it can not be played to the portion it is downloaded, and sometimes it is hard to resume the download process.
It is easy to use but it is not satisfying and if you are paying for the software then it is not a good choice.