Forum:	iPhone Accessories
Téma:	Keep Dolby TrueHD audio and DTS-HD Master Audio of a  Blu-ra
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john191103:
Keep Dolby TrueHD audio and DTS-HD Master Audio of aBlu-ray movie 

About Dolby TrueHD audio
Dolby TrueHD, the next-generation lossless compressiontechnology, is intended primarily for high-definition home-entertainmentequipment such as Blu-ray Disc and HD DVD. The technology provides an excellenthigh-definition audio, which is identical with master tapes of a recordingstudio, so that giving users a true high-definition entertainment experience. 
About DTS-HD Master Audio
DTS-HD Master Audio is a lossless audio codec createdby Digital Theater System, which is an optional audio format for both Blu-rayDisc and HD DVD. It is able to deliver all of the information from the originalmaster recording, allow a bit-to-bit representation of what the sound engineerslaid down. 
Since Dolby TrueHD technology and DTS-HD Master Audio deliverunprecedented home theater experience, there may be no one willing to loose thewonderful audio while backup a Blu-ray movie. The thing is that most Blu-ray rippersin the market can not recognize the two stunning audios at all, and this may bethe probable thing that troubles you a lot. With luck, I found an available Blu-rayconverter via Google by chance, and my pleasure to share its detailed operatingsteps here, sincerely hope it will be of some help for you folks who arefeeling headache about this problem. 
Software I will use is called Pavtube Blu-Ray Ripper, it isable to read TureHD audio and DTS Master Audio, and output them as 5.1channels. Here I will take keeping Dolby TrueHD audio for instance to show youhow to retain the original attributes during the course of Blu-rayripping.&amp;nbsp; 
Step 1: Load Blu-raymovies
There are three ways to import Blu-ray files: &quot;DVD Rom&quot;, &quot;DVDFolder&quot;, and &quot;IFO/ISO&quot;.

Step 2: Select DolbyTrueHD audio, output format and set destination folder
Now you just tick off on what you want to copy. Normallyselect the .m2ts video stream with the longest playing time, because it isusually the main movie of the Blu-ray. If in doubt, you can preview theselected stream in the video pane to the right to check it. You can also tickseveral .m2ts files, if you want to copy the extras of the Blu-ray movie. Notethat you can also combine everything into one file via ticking the checkbox&quot;Merge into one file&quot;. 
Look at the &quot;Audio&quot; option, usually a Blu-ray movie hasseveral audio tracks, Dolby TrueHD audio is among them. Generally speaking, thefirst one should be Dolby TrueHD, or you can play it to check if it is what youwant. 
At the same time, you should select output format from thedrop-down list of &quot;Format&quot;, here I choose &quot;MKV HD Video (*.mkv) for instance,or if you just need copyBlu-ray movies without any loss, you can select &quot;Copy&quot; and then &quot;DirectlyCopy&quot;. After that, click the folder icon at the end of &quot;Output&quot; to specifywhere to locate the output files, if not, the program will export the outputfile to the default save path automatically, and these files can be easilyfound via clicking &quot;Open&quot; button.

Step 3: Adjust video andaudio parameters
Click &quot;Settings&quot; button, and then you can adjust audio andvideo parameters like codec, image pixels, bit rate, frame rate, sample rate, andaudio channels, to keep Dolby TrueHD audio to the greatest extent, you shouldselect 5.1 channels. 

Step 4: Start Blu-rayripping
Once the above mentioned settings are finished, now justclick &quot;Convert&quot; button to start Blu-ray ripping, the ripping info includingripping process, ripping time, and generated file size will all be shownclearly on the following window, and if you do not want to wait around, you cantick &quot;Shut down computer after conversion&quot;. 


ivy00135:
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