Keep Dolby Digital 5.1/Dolby TrueHD 7.1 in Blu-ray ripping

Nowadays, Blu-ray disc is still holding its own in the marketplace because of the good quality of video and audio with several different mixes for multichannel systems. Essentially, there are three audio formats which are associated with Blu-ray: Linear PCM, Dolby TrueHD and DTS-HD Master Audio, all of which can deliver eight discrete channels of lossless audio. If you are obsessed with a true home theatre experience, it is important to know how to backup your Blu-ray with keeping high quality sound (Dolby Digital 5.1/Dolby TrueHD 7.1 audio) for the overall movie experience.

Backup Blu-ray with 5.1/7.1 surround sound

Top Blu-ray Copy to preserve 5.1/7.1 surround sound

In fact, it's easy to rip Blu-ray with keeping 5.1/7.1 surround sound, as long as you got a Blu-ray copy in hand. Here I choose Dimo Video Converter Ultimate which is top-ranked in the review with reasonable price. It will help you perfect bypass Blu-ray copy protection like AAC, BD+, CSS, Region, RCE, Sony ARccOS and PuppetLock, copy and rip all kinds of Blu-ray to lossless mkv with all subtitle tracks, chapter markers and audio streams preserved keeping, including original and perfect 5.1, 7.1 channels.

In addition, it enables you to convert Blu-ray to almost all other popular video formats like MOV, MP4, AVI, FLV, 3GP, VOB, MKV, WMV, etc. and even extract audio in MP3, WMA, OGG, FLAC, etc. formats. If you're on Mac, please turn to for Dimo Video Converter Ultimate for Mac, which shares the most features with Windows version. Get it now and follow the detailed steps below to get all done fast. 

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Note: Please make sure that all the Blu-ray ripping are just for personal use. One must take into account that the overall quality also depends greatly on your AV receiver and input connections.

Keep Dolby Digital 5.1/Dolby TrueHD 7.1 in Blu-ray ripping

To output Blu-ray with 5.1/7.1 audio track on PC/Mac, you need: 

1. Dimo Video Converter Ultimate for Mac; 

2. External or Internal Blu-ray Drive; 

3. AMP(Amplifier) support Dolby Digital/Dolby TrueHD output; 

4. Adapter/Connector if necessary; 

5. HDMI 1.3 specification or later for DTS HD 7.1 passthrough. HDMI 1.3 added support for the Dolby TrueHD and DTS-HD Master Audio lossless compression formats used with Blu-ray Disc. It also supports all compressed formats such as Dolby Digital and DTS audio. HDMI 1.3 also added another feature, automatic audio syncing. This works by adjusting the audio processing times to remove lip sync problems.

6. No matter which Blu-ray ripping program you choose, anywhere from 30 to 60 GB of hard disk space is needed depending on what you're ripping. Blu-Rays are big, and we're going to rip the whole thing to our drive first, so depending on the movie you're ripping and the quality you want in your final movie file, you'll need a good amount of space.

Losslessly Backup Blu-ray with Dolby Digital 5.1/TrueHD 7.1 audio

A: Insert your Blu-ray disc to the Blu-ray Disc drive, then launch this top Blu-ray Ripper and click the "Add Blu-ray" button to have the blu-ray content imported. 

Blu-ray copy

Tip: Before start ripping Blu-ray to MKV videos in lossless, you can backup BD content to ISO first.

B: Click the Format bar and go to the "Select Format" column, choose Lossless MKV as the output video format in the category of "Format > Video > Multi-track". Then you can get Blu-ray rewrapped to MKV without transcoding and passthrough original TrueHD/Dolby Digital/DTS/PCM audio.

Loessless MKV format

Since the source Blu-ray may not contain Dolby True HD 7.1 audio, you can also transcode Blu-ray audio streams to Dolby Digital 5.1/7.1 audio tracks with common format. Choose MOV, MKV, H.264 MP4, MPEG-4, etc from "Format > Video" and click "Settings" to set audio channels to 6.

C: Press the "Start" button to convert Blu-ray to MKV with 5.1/7.1 audio stream. 

After the conversion, get the MKV outputs under "Open" panel to play on your PC/Mac computer or stream to kinds of media devices for playback at ease. Enjoy your ripped Blu-ray movie with extreme realistic sound effects.

Additional method:

Or use one easy and free method to make a MKV using MakeMKV. With it, you can decrypt a Blu-ray disc and save whatever parts you want (if you don't need the 7.1-channel audio mix, for example, just uncheck it) into an MKV container. This takes about half the duration of the movie; when the decryption is finished, you have an MKV file that you can play back with VLC or other software. 


1. Launch MakeMKV and o then scans and imports the Blu-ray disc. 
2. Select any options from the side menu, choosing whether to include all audio streams, subtitles, or only include specific languages. 
3. Choose the output folder (default is set to ~/Movies/DiscName) 
4. Click the "Make MKV" button to start the conversion process. 

Compared with MakeMKV, Dimo Video Converter Ultimate offers faster speed and provides more output formats for you like MP4, AVI, WMV, MOV, FLV, MPG, not limited to MKV as MakeMKV does. What's more, this Blu-ray ripping tool provides hundreds presets for TV, iPad, Apple TV, iPhone, Kindle, VR, etc iOS/Android based media devices for easier enjoyment.

If you want to rip and convert your Blu-ray library to different video, audio formats and to more manageable file sizes for playing, editing, uploading, streaming anywhere, Dimo's Blu-ray Ripping software is a better choice, for achieving these aims in one stop.

Extended Knowledge

1. Lossless Audio tracks 

We all know that Dolby digital and DTS do sound excellent despite being lossy, lossless sound even better. In lossless multi channel soundtracks, no data is lost and bandwidth is preserved and that is why it requires more space. As a matter of fact, space is not really an issue for Blu-ray. 

2. Three Lossless Formats

a. Linear PCM 

Linear Pulse Code Modulation, written as both PCM and LPCM. LPCM tracks can have up to 7.1 channels of sound; three fronts, four surround and a low frequency effect channel. On a Blu-ray, it carries 7.1 channels at higher sampling rates and bit depth. It offers the same quality as that of the original master encoded without any compression. Due to this reason, it takes a lot of space which can be taken as disadvantage but not in the case of Blu-ray. 

b. Dolby TrueHD 

Dolby True HD is another lossless format. However, it takes a little less space than PCM. Eight full range channels 24-bit/96 kHz audio are supported by this format. It is a variable bit rate codec. Unlike LPCM, TrueHD is not a mandatory codec for Bluray but it is for HD DVD. In case of Blu-ray, this format is gradually losing its popularity as DTS Master Audio becomes more popular.

c. DTS –HD Master Audio 

While everyone is becoming a fan of its superior sound quality, not every player supports DTS-HD Master Audio. Yet, if you are able to get one that does, it would be pretty easy to tell the difference. It also allows bit by bit representation of the master track and hence the name. It supports a variable bit rate of up to 24.5 Mbps.

3. 5.1 Surround Sound vs 7.1 Surround Sound 

A 5.1 surround sound system uses 6 channels (feeding into 6 speakers) to create surround sound. 7.1 surround sound systems use 8 channels. The two extra channels of sound (and two extra speakers) provide a slightly better audio quality.

Blu-ray Audio Stream 5.1 Surround Sound 7.1 Surround Sound
Channels 6 (5 standard + 1 subwoofer) 8 (7 standard + 1 subwoofer)
Sound Quality Standard surround sound Greater depth and precision
Suitable for Small to medium rooms Large rooms
Cost Varies, but cheaper Varies, but more expensive
Formats Dolby Digital, DTS Dolby TrueHD, DTS-HD Master Audio
Supported by All DVDs, video games, etc. Industry standard PS3, PS4, Xbox One and most Blu-ray players, although only approx. >150 Blu-ray movies feature 7.1 sound.
History Invented in 1976 by Dolby Labs. First used in theaters for Batman Returns in 1992 First theatrical 7.1 release was Toy Story 3 in 2010. Disney will use it for all future releases.

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