4Videosoft Blu-ray Copy is the best Blu-ray copier for users to copy Blu-ray movies and disc. With this software, you can easily copy Blu-ray disc with compressed BD-50 to BD-25, keeping the source quality. In addition, you can back up Blu-ray movies to hard drive as a Blu-ray folder or an ISO file. You can burn local Blu-ray folder or ISO file to Blu-ray disc as well.