There are mainly three lossless audio codecs used in Blu-ray disc: PCM, Dolby TrueHD and DTS-HD MA. And the Dolby TrueHD technology and DTS-HD Master Audio can deliver unprecedented home theater experience, so there may be no one willing to loose the wonderful audio while backup a Blu-ray movie.
It's easy to rip Blu-ray with Dolby Digital 5.1/Dolby TrueHD 7.1 sound, as long as you got a professional Blu-ray ripping tool in hand. Here [b]Brorsoft Blu-ray Ripper / for Mac[/b] is just the one. It can bypass Blu-ray copy protection like AAC, BD+, CSS, Region, RCE, Sony ARccOS and PuppetLock, help you rip and convert Blu-ray (as well as DVD) to almost all the popular video format like MKV, MP4, MOV, MPEG-4, WMV, etc as you want. Plus, it enables you to extract audio/music like TrueHD, DTS HD, etc from Blu-Ray disc without losing quality and keep its original and perfect 5.1, 7.1 channels.
[b]How to Guide: Keep Dolby TrueHD 7.1 in Blu-ray ripping[/b]
[b]Step 1. Add Blu-ray movies[/b]
Insert Blu-ray Disc into your external or internal BD drive and launch the Blu-ray Ripping program. Click "disc" button to import Blu-ray movies for converting/copying.
[b]Step 2. Choose output format keeping 7.1 audio[/b]
To keep TrueHD 7.1 audio, you can hit the Format bar and choose Common Video > WMV3(WMV9)(*.wmv) as the output format.
It provides the 7.1 audio channels for you, so you can get the Dolby TrueHD 7.1 audio saved.