yt-dlp-gui is a front-end of yt-dlp or youtube-dl for downloading videos from YouTube and other sites. It use FFmpeg for video conversion.
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VidBee Alternatives
VidBee is described as 'Open-source tool for downloading video or audio from 1000+ sites. Features RSS automation, batch downloads, format selection, and works on all OS platforms' and is an app in the video & movies category. There are more than 25 alternatives to VidBee for a variety of platforms, including Windows, Mac, Linux, Android and Google Chrome apps. The best VidBee alternative is yt-dlp, which is both free and Open Source. Other great apps like VidBee are JDownloader, youtube-dl, Cobalt Tools and Seal.