Win 7 XBMC Dharma RC1 No AC3 when using HDMI Audio [debug log posted at #9]
steelman1991
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Posts: 2,759
#28
2010-12-08, 19:16
slizzap Wrote:Forgive my possible ignorance here, but is there a guide to getting AC3/DTS passthrough working properly with XBMC? Are there supposed to be any special steps? Any required plugins/codecs/software of any sort?

I purchased an ATI Radeon HD 5670 and did a complete rebuild of my HTPC last night. I did nothing other than install all the drivers for my hardware, do a few tweaks to Windows (7 x32), install the latest ATI drivers, verify sound was working (note: did *not* use Realtek ATI HDMI driver), and then install/configure XBMC. Didn't install any codec packs at all. I was hoping a clean start with new hardware might do me some good.

After XBMC was installed, I configured the audio output to use HDMI with 5.1 speakers. Music sounds beautiful, as do WMVs with WMAPro. When I have AC3 and DTS compatible receiver options checked, my MKVs with DD and DTS have no audio. My receiver switches to "Stereo" and acts like there's no input. If I disable the AC3/DTS options, I get sound but it appears to be sent as PCM. I didn't test TOO much here because it was getting late, but the channels sounded correct but I could've swore I heard *some* dialog coming out of the rear channels, which I don't think is correct. But I need to check that versus my dedicated DVD player. I'll be doing some more testing tonight. In any ase, it's not bitstreaming.

I've spent the past couple days doing some searching around these forums as well as avsforum.com. I never completely rule out that it's a problem on my end versus a bug in the software, so I just wanted to see if I was missing something obvious. I haven't really seen any guides on this forum or in the wiki, which leads me to believe there should be nothing special about this.

TIA.
So what HDMI driver do you have installed? - there are 2 options available ATI HDMI Driver (which comes bundled with CCC) and which I would recommend as an install. or the seperately available Realtek HDMI Driver - which I wouldn't recommend.

No additional codecs are required for DD/DTS bitstreaming.
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Messages In This Thread
[No subject] - by cartman1337 - 2010-11-27, 01:54
[No subject] - by steelman1991 - 2010-11-27, 02:21
[No subject] - by pike - 2010-11-27, 03:58
[No subject] - by john.eyl - 2010-11-27, 08:13
[No subject] - by steelman1991 - 2010-11-27, 10:25
[No subject] - by alexrose1uk - 2010-11-27, 11:12
[No subject] - by cartman1337 - 2010-11-27, 19:46
[No subject] - by john.eyl - 2010-12-01, 14:18
Media Info for previous post - by john.eyl - 2010-12-01, 14:42
[No subject] - by G|zO - 2010-12-01, 23:15
[No subject] - by john.eyl - 2010-12-06, 14:06
[No subject] - by john.eyl - 2010-12-06, 14:24
[No subject] - by slizzap - 2010-12-06, 17:01
[No subject] - by slizzap - 2010-12-06, 17:23
[No subject] - by G|zO - 2010-12-06, 23:20
[No subject] - by CrystalP - 2010-12-07, 01:49
[No subject] - by john.eyl - 2010-12-07, 02:05
[No subject] - by slizzap - 2010-12-07, 03:11
[No subject] - by ExGemini - 2010-12-07, 05:53
[No subject] - by cartman1337 - 2010-12-07, 18:36
[No subject] - by G|zO - 2010-12-07, 19:52
[No subject] - by CrystalP - 2010-12-08, 01:14
[No subject] - by john.eyl - 2010-12-08, 15:04
[No subject] - by slizzap - 2010-12-08, 18:16
[No subject] - by cartman1337 - 2010-12-08, 19:03
[No subject] - by slizzap - 2010-12-08, 19:14
[No subject] - by steelman1991 - 2010-12-08, 19:16
[No subject] - by slizzap - 2010-12-08, 19:19
[No subject] - by steelman1991 - 2010-12-08, 20:10
[No subject] - by slizzap - 2010-12-08, 22:23
[No subject] - by G|zO - 2010-12-08, 22:42
[No subject] - by steelman1991 - 2010-12-08, 23:37
[No subject] - by john.eyl - 2010-12-09, 00:29
[No subject] - by steelman1991 - 2010-12-09, 01:12
[No subject] - by slizzap - 2010-12-09, 16:43
[No subject] - by steelman1991 - 2010-12-09, 16:59
[No subject] - by slizzap - 2010-12-09, 17:18
[No subject] - by steelman1991 - 2010-12-09, 19:41
[No subject] - by john.eyl - 2010-12-10, 04:59
[No subject] - by G|zO - 2010-12-11, 12:25
me too. - by willrom - 2010-12-17, 06:02
[No subject] - by cartman1337 - 2010-12-19, 23:21
[No subject] - by CrystalP - 2010-12-20, 04:02
[No subject] - by cartman1337 - 2010-12-20, 18:46
[No subject] - by cartman1337 - 2010-12-20, 22:19
Still no AC3 - by john.eyl - 2010-12-21, 01:51
[No subject] - by CrystalP - 2010-12-21, 11:04
[No subject] - by steelman1991 - 2010-12-21, 13:23
[No subject] - by CrystalP - 2010-12-21, 19:29
[No subject] - by steelman1991 - 2010-12-21, 23:08
[No subject] - by john.eyl - 2010-12-21, 23:22
[No subject] - by CrystalP - 2010-12-22, 01:49
[No subject] - by CrystalP - 2010-12-22, 02:13
[No subject] - by cartman1337 - 2010-12-22, 21:40
[No subject] - by CrystalP - 2010-12-23, 01:56
[No subject] - by NervousEnergy - 2010-12-24, 21:50
[No subject] - by cartman1337 - 2010-12-26, 12:08
[No subject] - by cartman1337 - 2011-01-01, 16:59
[No subject] - by john.eyl - 2011-01-02, 01:09
[No subject] - by cartman1337 - 2011-01-02, 01:30
[No subject] - by CrystalP - 2011-01-02, 10:51
[No subject] - by cartman1337 - 2011-01-02, 12:04
[No subject] - by john.eyl - 2011-01-02, 17:27
[No subject] - by CrystalP - 2011-01-02, 22:37
[No subject] - by cartman1337 - 2011-01-02, 23:30
[No subject] - by john.eyl - 2011-01-03, 12:06
[No subject] - by john.eyl - 2011-01-03, 12:08
[No subject] - by cartman1337 - 2011-01-03, 19:23
[No subject] - by CrystalP - 2011-01-04, 01:03
[No subject] - by getafix - 2011-01-05, 13:33
[No subject] - by john.eyl - 2011-01-06, 11:50
[No subject] - by john.eyl - 2011-01-06, 11:52
[No subject] - by getafix - 2011-01-12, 14:05
[No subject] - by john.eyl - 2011-01-13, 12:21
[No subject] - by Freakish - 2011-03-17, 07:52
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Win 7 XBMC Dharma RC1 No AC3 when using HDMI Audio [debug log posted at #9]0