Hello, @macspeaks. Thank you for your contribution. While this is a very nice open source application for downloading videos from YouTube, it is sadly, violating the terms and condition of YouTube which makes it Illegal. Youtube does not allow direct download of their video content, however, they have a mobile feature which allows their user to save video offline and watch later without an internet connection. Although, the saved video cannot be shared.
Sorry for the inconvenience as a result.

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[utopian-moderator]