On another hand, if VLC changed the code libraries it uses for decrypting, Handbrake will not find VLC or the installation to deal with any commercial DVD. Handbrake can rip some DVDs with regular and conventional, but difficult or cannot handle DVDs with tough encryptions, like Disney X-project DRM, CSS encryption (CSS) encryption, ARccOS, Region Code, DVD Region-code, etc. However, as for DVD encryption technologies, some are regular and conventional, while the others are new and tough. You can try your luck for ripping some commercial DVDs with the assistance of VLC or something when using HandBrake. Situation 1: Handbrake won't rip your DVDs Caused By DVD Encryptions (The Main Reason) ※ For macOS 10.14 or lower, you can also download 32-bit installer here.