Generally speaking, Backup Blu ray means copy Blu ray DVD to BD-R, shrink Blu ray movies to common DVDs or convert Blu Ray DVD to popular video/audios/portable devices, whatever, you can find the related guide here and all the Blu ray backup software are easy to use.
Condition 1: How to backup Blu-ray to BD-R/REs or to the hard disk drive
Free Download and install Blu-ray Backup to BD software
Step 1: Put a Blu ray disc to be cloned into the drive.
Step 2: After Blu-ray Backup has read the information of the Blu-ray DVD, Click "Start" to convert.
(Tips, before the converting, you can do some settings by click to optimize the output files.)
Start 3: Blu ray DVD movies Backup will search for BD-R or BD-RW disk automatically after the conversion. If it finds no BD-R or BD-RW disk, it will pop the drive; and if it finds the disk, it will start to burn the converted files to BD-R or BD-RW disk.
Step 4: Complete!
Condition 2: How to backup Blu-ray to AVI/MP4/MOV/MKV/HD
Free download and install Blu ray ripper, which can convert Blu ray movies to popular video/auido formats and iPod/iPad/iPhone/PSP/Xbox 360/Zune, etc.
Step 1: Run the Blu ray DVD backup, Click "Add Folder" button to add Blu ray files.
Step 2: Output settings- Under "Profile" option, choose the format you want to convert Blu-Ray to; under "Destination" option, choose a folder to save output files
Step 3: Click "Convert" button to begin converting Blu ray to AVI/MOV/MP4/MKV/HD, etc.
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3-in-one Blu-ray backup for Mac, DVD Ripper for Mac and Video Converter for Mac.