A Completely AD-Free Youtube to MP3/MP4 Converter

I make videos and was getting really frustrated with all the online options that are riddled with ads and unsavory links. So I spent the last 24 Hours making a free application for this exact issue and I think it works great. Originally I just made this for myself and friends but figured I'd share it with others. Currently it only works with windows, but I'm willing to maybe make it a multiplatform application. I'd love any feedback or if there is any bugs that people find I'd lo