Talk:Dolby TrueHD

message: This article reads like a throwback to the raging debates of the Blu-ray vs HD DVD war.  It's HD DVD centric and seems to even lean toward downplaying Blu-ray.  Blu-ray won that war some time ago, and HD DVD is a dead format.  The article needs to be reorganized to center on the Blu-ray context since that's what readers will generally be here to read about.  HD DVD information should still be included in a historical context.  I'm thinking of making that edit if no one objects.  24.23.207.45 (talk) 22:44, 19 September 2008 (UTC)
thread_title: Out of date

message: Surely it should read mandatory for HD DVD and optional for Blu-ray Disc hardware? (Right now it says media). From what I've just read about Warner's first HD DVD titles, only one of them will have Dolby TrueHD (The Phantom of the Opera, the others will use Dolby Digital Plus). —Locke Cole • t • c 08:08, 29 March 2006 (UTC)
thread_title: BD vs. HD DVD

message: Is the long list of titles with this specific audio coding really necessary? Can't we simply delete it? /SvNH 22:26, 6 May 2007 (UTC)
thread_title:  Long list 

message: On Panasonic's BD Glossary, they say that TrueHD can "technically" support 32 channels? So is it 14, or 32? Nick 8 04:48, 23 August 2007 (UTC)
replies: text: It definitely does not support 32, unless you change the spec of course. But if its in relation to BD, thats only speced to 7.1, their just trying to make it sound good, but they exaggerated way too much. --Ray andrew 12:44, 23 August 2007 (UTC)
thread_title: Maximum Number of Channels?

message: the article says:
"HDMI 1.1 (and higher) can transport multichannel PCM-audio, and therefore can transport an unpacked TrueHD audiotrack"
but if u read the hdmi 1.0 spec it also can do that.  —Preceding unsigned comment added by 82.96.59.131 (talk) 13:54, 10 September 2007 (UTC)
replies: text: Nope see HDMI --Ray andrew (talk) 21:44, 1 June 2009 (UTC)
thread_title: hdmi 1.1 required for unpacked dolbyhd?

message: I see a lot of new hdtv torrents listed as TruHD720p. Is this Dolby TrueHD? And if so, what media player can play TrueHD?  Family Guy Guy (talk) 12:26, 18 March 2009 (UTC)
thread_title:  TruHD versus TrueHD 

message: "S/PDIF cannot carry Dolby TrueHD due to bandwidth limitations, as S/PDIF is limited to 5.1 channels of compressed discrete audio. When using S/PDIF, a device such as a Blu-ray Disc player will automatically send the Dolby Digital audio." is a misleading statement. It should be mentioned that S/PDIF is capable of 6.1 discrete channels under the DTS-ES Discrete 6.1 (notice only under Discrete format).  —Preceding unsigned comment added by 72.68.93.240 (talk) 23:00, 27 May 2009 (UTC)
thread_title:  Transport 

message: "Since TrueHD is an optional codec, a separate (primary) AC-3 audiotrack must be present on Blu-ray discs that contain a TrueHD track."
It is unclear what kind of AC-3 track this must be. Is it the same as the TrueHD track? 7.1? 5.1? If someone would add this, it would be clearer.  —Preceding unsigned comment added by 77.249.234.22 (talk) 03:19, 30 May 2009 (UTC)
replies: text: It need not be the same channel format, and technically you could include DTS instead of AC3. --Ray andrew (talk) 21:45, 1 June 2009 (UTC)
thread_title:  Mandatory AC3 track for Blu-ray Disc 

message: I see a few questions concerning the capabilities of Dolby TrueHD and would like to include an official link to technical specifications. 
This reference may support a more comprehensive and detailed discussion on performance (e.g. data rates, channel support, metadata capabilities). Any objections?  
Disclosure: I am a Dolby press officer.  —Preceding unsigned comment added by Armstid (talk • contribs) 00:52, 15 May 2010 (UTC)
replies: text:  Uh, it'd be amazing, ffmpeg is having a hell of a time creating an encoder for it without official specs (although this is probably a bad thing considering your position in the company) we'd love the specs. 67.162.213.230 (talk) 11:17, 29 July 2014 (UTC)
replies: text:  ^That was me, I'm using Safari and forgot I wasn't logged in. Bumblebritches57 (talk) 11:18, 29 July 2014 (UTC)
thread_title: Dolby TrueHD Specs

message: "The maximum encoded bitrate is 18 Mbit/s (the same as the uncompressed rate)."
I don't agree that 18 mbps is the uncompressed state.
A PCM 2 channel 48/16 track is 1536 kbps.
6ch 48kHz 16bit — 1536 / 2 x 6 = 4608 kbps 
6ch 192kHz 16bit — 4608 x 4 = 18432 kbps
6ch 192kHz 24bit — 18432 x 1.5 = 27648 kbps
So the uncompressed state is 27.6 mbps.
If I'm wrong, please correct me and provide a source.
Are1981 (talk) 15:34, 16 October 2010 (UTC)
replies: text: Uncompressed rate is > 35 Mbit/s, as said in French wiki. I am not sure 18 mbit/s is done by any Blu-ray, that is theoretical max (TrueHD is variable bitrate). But I checked that TrueHD on March 2018 dolby demo disk does have 10 mbit/s peek at least. Valery Zapolodov (talk) 16:15, 30 August 2021 (UTC)
thread_title:  Maximum bitrate? 

message: The article says that TrueHD was a mandatory codec for HD-DVD, but I do not believe that to be correct...many HD-DVD movies came without a TrueHD track...perhaps it should say Dolby Digital Plus?
Also, it might be worth noting that on Blu-Ray the TrueHD track has a standard Dolby Digital track interleaved, although this is not necessarily the case on HD-DVD.  — Preceding unsigned comment added by 207.237.144.57 (talk) 16:35, 21 June 2013 (UTC)
thread_title: Mandatory Codec for HD-DVD and Embedded Dolby Digital Track