Dolby Digital 5.1 pass-through and Quicktime

All,
I have found a perplexing issue and I'm not sure what to make of it. I have some movies which, if played through my AppleTV and receiver, outputs Dolby Digital 5.1 quite nicely. If i take the same exact movie file and play it through Quicktime or iTunes (my computer is connected to my receiver via the optical cable), I don't get Dolby Digital.
Anyone have any ideas why this is?
Carlos

Quicktime does not support AC-3 passthrough (DD 5.1) which is what iTunes uses as framework. It does support AAC 5.1

Similar Messages

  • ITunes 9 and Dolby 5.1 AC3 pass through doesn't work

    I know that this is an old question. But for me, it still doesn't work. I can pass through Dolby Digital to my 5.1 Home Theater system in VLC Player or EyeTV without any problems. However, in iTunes it still doesn't work. When I select the surround audio track of movies purchased from iTunes, I get no audio at all or a completely silent Dolby 2.0 or 5.1 track. But I didn't manage to get real 5.1 sound. I tried to set the digital output to "Encoded Digital Audio" and selected 48 kHz which should match the right setting for movies. But it still doesn't work. What can I do? Thanks for your help!

    Re Checked it.
    Only AAC stereo tracks on bought movies are 44,1 kHz.
    AC3 tracks are 48 kHz.

  • Question for Dolby Digital and

    Hello. I have a SoundBlaster Platinum soundcard,DDTS-00 Decoder and GigaWorks S750 speakers and I have a problem when seeing movies from my PC.When I use the speakers with Playstation2 with optical cable when the movie has Dolby Digital or DTS sound the option on the decoder turns on that shows the sound mode.When I'm using the speakers with PC and I connect them with coaxial or optical cable and I choose from the sound menu of the DVD program (Cyberlink DVD)what sound I want the option on sound mode of the Creative decoder doen't change.What is going on?Could you tell me what to do?I think that I hear Dolby Surround and not Dolby Digital Neo:6 and DTS:ES. Thank you.Message Edited by pangef on 07-8-2006 06:38 AM

    With your PC, set it up to S/PDIF. This way it by passed all software decoding and leaves it to your speakers .
    IMHO, if people have speakers that can decode DD 5./DTS then use S/PDIF all the way
    I have tested useing software decoders and then using S/PDIF pass through and found the sound is better via S/PDIF.
    Hope that hel
    ps.

  • Dolby Digital in QuickTime?

    Now that Apple TV can handle Dolby Digital surroundsound, will it work in QuickTime player too? Anyone tried this yet? It would be nice to be able to export a movie as a QuickTime with AC3 audio in it.

    Did you look at this thread?
    http://discussions.apple.com/thread.jspa?threadID=1383644&tstart=0

  • HD Audio Pass Through on Mac Mini HDMI port

    There have been various threads realting to this but nothin up to date or resolved as i can determine.  I plan to use a Mac Mini as the core AV processor in a high end 8 channel sound system in a home cinema set up.  The mac mini runing XBMC or similar will need to process high definitiion video files that contain Dolby and DTS True HD 8 channels bit streams and be able to pass these streams unchanged and uncompressed to the HDMI port for external decoding. 
    In previous threads it was identified that there was a hardware and/or OSX operating system limitation that prevented this.  Has this now been solved? It seems surprising that Apple of all people would get this one wrong.  As I have not yet purchased the Mac mini then i am not in a position to experiment as my 2010 macbook probably is not the same hardware.
    Thanks

    I know this thread is a little old now, but I've been wondering the same thing myself - so I googled it and came up with this thread.
    I've just bought a new 7.1 Amp, the Yamaha RXV677 from Richer Sounds. It handles DTS-HD Master Audio 7.1 and Dolby TrueHD 7.1. Up until now I've not been able to try this sound format out as my current 2009 Mac Mini only sends audio through the Optical Out, so the best I can get is Dolby Digital 5.1 pass thru via S/PDIF. I was quite happy with this arrangement, until I get around to buying a blu-ray player. However, I realised my work laptop is a 2014 MacBook Pro with HDMI out. Therefore out of curiosity I decided to download a couple of HD demos from demo-world.eu that have DTS-HD MA 7.1 audio tracks embedded in them. I tried opening them up in VLC media player (version 2.1.5) and hooked up my 2014 MacBook Pro via HDMI to my Amp. To my amazement it worked!! - I got glorious 7.1 DTS-MA into my Amp, and it sounded simply stunning!! In VLC I had two HDMI audio devices to choose from 'HDMI' and 'Encoded HDMI' (or something like that - I'll have to hook it up again to be sure). When using straight HDMI output, my Amp read it as 'PCM Audio' but when using 'Encoded HDMI' it read it as 7.1 DTS Audio giving the sample rate and bit rate. I need to spend a bit more time testing this out - but it definitely works, and it definitely plays in surround from all my available speakers (I have a 5.1 setup, so can't test the other 2 surround channels).
    I have no reason to believe that this will not work from a current Mac Mini with HDMI - although as yet I can't verify this, and I have only tested using VLC player with a .m2ts file.

  • XBox 360/Audigy: SPDIF IN pass through to SPDIF OUT not working with 5.1

    Hi,
    I've a problem passing my digital dobly signal from my 360 over the Audigy soundblaster to my external decoder. I want to use digital SPDIF IN from the audigy?IO device to pass the signal directly without processing to the external decoder by using the SPDIF OUT.
    There is only one digital in at the decoder, so I need this combination if I want my PC and XBox to be connected both without a toslink switch.
    I activated the pass through and external decoder option in the audigy console application. I also disabled the DDL encoder. Additionally I set my Windows 7 speaker settings to use SPDIF OUT as standard device.
    This is working for every dolby digital signal?from a dvd which I play on my PC, but not for the XBox signal. The signal is not recognized as a 5. dolby digital signal, but as a 2.0 signal. So something must happen with the signal in the audigy. The XBox settings are correct, because when I connect the toslink cable directly to the decoder everything works fine.
    My drivers are the newest one (3.8)?from the support pack.
    I don't want to use the DDL option, because the latency is much to high to allow regular playing!
    Is there a possibility to pass the XBox signal through to my decoder by using the digital in and out of the audigy?
    Thanks in advance,
    Axel

    Hi I have the same probleme, exept that I have succesfuly pluged my home theater receiver and the 5.1 works. Just my subwoofer seems not to work properly. Like when I plug it into a digital dvd player it works very nicely. but when pluged into the sound card it seems that it dosnt have any signal for it.
    ANy clues??? I know i pluged everything finely I have tested the sound test for each speaker and sub to, from the receiver and from the creative software the sub seems to work but very quietly even if I cran the volume up on the sub or in the software , the sub dont work as it should.
    1 thing I remarqued is that the sub works occasionaly in some movies. When listening to the music it not working and I dont understand that.

  • Dolby Digital Live : Device already in use, how to enable i

    Hello,
    I bought Dolby Digital Live yesterday, installed it and activated it on my X-Fi Platinum, but I have a problem. All my drivers are updated, but whenever I try to activate DDL in the Volume Panel or Audio Console, it says that the SPDIF device is already in use.
    I tried ending most processes, but the problem is the same, it seems that something is internally using my SPDIF output so that DDL can't be activated. (I'm using Vista Business 32 bits).
    It's also impossible to test tones on the SPDIF output as Windows also says it's already in use, that's weird.
    Anyone knows how to fix this
    Thanks.

    Ok it worked, thank you ^^
    This is what I did (complete reinstall of Creative suite was not needed) :
    - Uninstalled Creative X-Fi through Device Manager (right click on it, then Uninstall and Delete driver option), without rebooting
    - Refreshed modifications in Device manager and said "No" to search drivers for multimedia device
    - Installed latest X-Fi drivers without rebooting
    - Activated Dolby Digital Li've with a right click on the Volume Panel tray icon
    - Rebooted?as the sound was only stereo + echo, and now it works perfectly
    Concerning DDL, yes, it's only 5., and Creative plans to "give" DTS Connect the same way they did for DDL for old X-Fi.

  • Automatic pass through for a group

    cs4
    it seems that when i am working some of my groups automatically change to "pass though" blending mode. is there a way i can turn this off or is there something that i am doing that is changing it for me? i dont want it to be pass through, and i never select it on purpose. it just does it automatically.

    It is the default Blending Mode of groups because one may not want to limit the effect of Adjustment Layers to the pixel content of the group.
    If one organizes Adjustments with groups for pixel layers that lie below Normal would be a counterproductive default Blending Mode.
    I don’t know if or how one could change the default mode, but it should be easy enough to create an Action (or maybe better a Script) that creates a Group and sets its Blend Mode to Normal and trigger that either from a Configurator Panel or assign it a Keyboard Shortcut.

  • Titanium Dolby Digital - Windows Volume Controls Not Function

    I am extremely happy with the Titanium because it finally elminated the 4GB Snap-Crackle-Pop issues I've been having since I owned this motherboard.
    However, I've noticed that when I enabled Dolby Digital encoding over an optical output the master windows volume controls and muting do not affect the audio output at all.
    Using the master windows volume controls with the analog or unencoded digital optical outputs work fine. It is only when using Dolby Digital encoding that I see this strange behavior. In-game and application-level volume controls & muting work fine; it is only the master windows volume controls that are 'ignored' when using Dolby Digital.
    I'm still happy to see Dolby Digital encoding on this card, and very pleased that I'm using 4GB now without crackling in games or during music, but hopefully this Dolby Digital issue can be fixed.
    Have any other users observed this odd Dolby Digital behavior?

    Unfortunately (for me) the two of you are correct and windows volume controls have no effect in Vista.
    Auzentech has this on their FAQ:
    Q : After installing the sound card and connecting it to my surround sound system using S/PDIF output, keyboard and Control Panel adjustments to Volume and Balance either do not work or have minimal affect. Is that normal
    A : With Digital Audio output, output levels are controlled by the wave volume settings. Multimedia keyboards and remote controls only adjust the master volume. The third-party application "Volume Tracker" corrects the situation by linking wave volume and master volume. Volume Tracker is compatible with Windows 2000, XP and Windows Media Center.
    I also found this article:
    "Another direct consequence of transmitting a compressed audio signal instead of an uncompressed audio signal (more commonly known as PCM) is that the volume of that signal cannot be modified once it has been encoded. Because the bits in an encoded signal no longer directly correspond to the volume of that signal, it is impossible to increase the volume until it is decoded. This explains why your PC cannot control the volume of your sound when you are using Dolby Digital or DTS as the output. The connected device will be the only place where the volume can be changed."
    http://windowsvistablog.com/blogs/windowsvista/archi've/2008/03/04/using-s-pdif-to-send-audio-from-your-pc.aspx
    So it would seem that this behavior is not only intended, but apparently unchangeable in Vista. In XP there is a utility (Volume Tracker) that can fix this, reportedly. This utility has no effect in Vista.

  • Lenovo Apps, Y50, Dolby Digital Plus

    Planning to to a clean install of Windows 10, but there are certain apps that i want and cant find online
    Dolby Digital Plus
    Lenovo Settings
    OneKey Theater
    Click here to view image
    Mod's Edit: Image(s) converted to link(s) due to size.  Photos are limited to 100k size per forum guidelines.
                         Please refer to About Posting Pictures for more information.
     

    hi Chris1876,
    Welcome to Lenovo Community Forums!
    Hope you find these helpful.
    Dolby Digital Plus
       Once you download and Run the Audio Driver, It will ask you about where you want to have the driver extracted, Take tone of the File path, After Installing the Audio Driver Go to that File Patch and Open the folder inside named Dolbym and You find the DolbyUI installation for Dolby Digital Plus.
    For Lenovo Settings
    Go to the Microsoft Store, And search for Lenovo Settings, It is available for Download.
    For One key Theatre
    Download it from this link.
    Regards
    Solid Cruver
     

  • Configure FRITZ!Box Fon WLAN 7320 for PPPOE PASS-Through

    I just switched ISP providers, from ARCOR to 1&1 and received a new FRITZ!Box Fon WLAN 7320 modem. I've been trying to figure our (without success) how to get it to do pppoe pass-through and allow my Airport Extreme router to the authenication with 1&1 versus the Fritzbox. I would greatly appreciate any and all assistance.
    I do not want to use the Fritzboz WLAN and/or have it do the PPPOE authenication.
    Message was edited by: jmpsohi

    One for the Airport forum, I would think:
    http://discussions.apple.com/category.jspa?categoryID=140
    Regards
    TD

  • Dolby Digital Audio Variations

    Does anybody know the difference between Dolby Digital 5.1 and Dolby Digital 5.1 EX?
    And is there an affordable DTS encoder/decoder for the Mac?

    none that I know of...
    take a look here for Dolby bits:
    http://en.wikipedia.org/wiki/Dolby_Digital

  • Dolby Digital Surround Sound dropping out with channel chang

    Currently I have my cable box hooked up to my extrenal I/O box for my Audigy Platinum Pro ZS2 via my cable boxes SPDIF optical out to the I/O boxes optical in. With my initial set up I went to the AudioHQ and changed my Device Controls/Digital Input controls to SPDIF (Dolby Digital/DTS SPDIF-In Decode) and I had beautiful surround sound, but the only problem is that when I change the channel I lose all sound and I have to go back to the AudioHQ controls and change the Digital Input setting back to the (Default) setting and then change it back to the SPDIFDolby digital....etc, and then the sound comes back. So why is it that whenever I change the channel I lose my optical connection?and sound?and have to reset my Digital Input settings in order to get the sound back?Somebody please help...thanks. Jacob

    Sry, your comment is 5 month old, but i have to ask you some thing too:
    What headset do you use for the surround sound? I read EVERYWERE that headsets can just output games / music in stereo... for example the logitech g35...
    Hope you can help me

  • SB X-Fi Titanium DTS/DOLBY DIGITAL problem.

    Hello. Im having problem playing videos and music whit my new titanium. It's connected to amplifier whit toslink cabel and when i put DTS/DOLBY DIGITAL on the music and videos won't give any sound. Youtube and windows own sounds do come out whit DTS/DOLBY DIGITAL but not the music and videos. Does anyone know what to do? Im crying blood if i wasted 00? for nothing.

    Maybe you should just said yes here"
    http://forums.creative.com/t5/Sound-Blaster/Would-you-pay-for-a-DD-DTS-built-in-decoder-with-X-Fi-Titanium/td-p/535908

  • IPhone Dolby Digital Pass-through

    I can see from the Tech Specs of both the iPad 2 and 3 that they have the ability of Dolby Digital Pass-through using the Apple Digital AV Adaptor.
    Can anyone confirm if the iPhone 4 or 4S also have this ability?
    It's not specifically mentioned on their Tech Specs pages, but the hardware capabilities are almost identical.
    Cheers.

    forgot to say - i'm also using linein from rogue amoeba
    http://rogueamoeba.com/freebies/
    sj

Maybe you are looking for

  • Need help.. premiere pro cs4 imports video but not the audio!!

    i need help before i fkn suicide.. i'm trying to import a .mpg clip its importing it but with out the audio. the file is fine when i play it in VLC or WMP i've also imported it before and it imported fine.. video and audio but now i dunno what the fk

  • Costant Window in SAP Script

    Hi i have copied a already existing sap Script(both layout SE71 and Print program Se38) in our Script but for that i am not doing any changes in  Print program. for any changes in my layout(se71) i create Perform ,and put form for that in a Subroutin

  • When the system goes into sleep mode it keeps making a beeping noise. The system is shut down by holding the button in

    When the system goes into sleep mode it keeps making a beeping noise. The system is shut down by holding the button in and will then boot up again without any errors. I Have replace RAMS, Motherboard and Power Supply. I have check the Bio's  and Powe

  • Black screen after upgrading ram (macbook pro late 2007)

    Dear Community, I am willing to donate 100 USD to anyone who is willing/able to provide concrete resolution to this problem. I am a professional freelance videoeditor and my job is currently stucked due to inability to boot my macbook pro again. Afte

  • Need help on FCC

    Hi All, i need to do FCC on the receiver side and the sender is IDOC.  The structure looks like this. <Header>       <abc>        <def> <DetailData>         <A>          <B>          <Items data>                     <AB>                      <CD>