The only restrictions implemented are the following: the application won’t download videos behind an age gate, videos that have encrypted streams, or videos that are not available in your country.
It’s also possible to download remotely on another PC via SSH, to extract the audio from the files, to mux Audio-Only and Video-Only streams into a complete video, or to filter out the results from Youtube. Depending on the type of file you’ve selected, a conversion might be needed. Just search Youtube for the video you want, check to see available versions, and tap the right entry to download it. YouTube Downloader is really easy to use, and it doesn’t require users to do anything special.
YouTube Downloader shows that it can be done. That doesn’t mean that there aren’t apps that can do this sort of thing. Downloading Youtube videos is not allowed by Google, so users won’t find any kind of apps that can do that in the official store.
