JDownloader is a generic downloader right? yt-dlp understand YouTube and has way more options, such as adding chapter marks, download or extract audio only, repack into certain formats, split into mulitple video by chapter mark segments, download entire playlists, download only max video height such as max 480p or 1080p, embed meta information into video, download video description as text file, just to name some of the most useful ones I use. Also yt-dlp is independent from Java, easier to install (at least on Linux), can be used from commandline and automated easily with scripts.

Why use JDownloader?