360 HD DVD update out tomorrow


Well ehmm the purpose of the DTS option must be to "transport" codecs that can not be output from the HD-DVD addon in any other way, so if the HD-DVD addon passes DD @ 1.5 mbit please don´t enable the option, thats like recompressing WMA to MP3.

For DD True HD,DTS MA(or whatever they are called) and uncompressed PCM, it should be enabled but not if their is a DD track at a high bitrate on the side.

Dunno if the HD-DVD addon supports all those codecs though.
 
That's what I think too. It should default to DD for DD-based codecs, DTS for DTS-based codecs. I don't like transcoding...
 
The techy details of the update.

http://blogs.msdn.com/andypennell/archive/2007/05/12/xbox-360-hd-dvd-update-now-available.aspx

Xbox 360 HD DVD Update Now Available

As of 2am this morning, the latest software for the Xbox HD DVD player is now available via Xbox Live (and will be posted on xbox.com in due course). The three teams involved (HD DVD, Xbox and the Codec folks) have all been hard at work for the last six months or so to produce this important update. This is not to be confused with the Xbox Dashboard update that went live last week: that effected the dashboard itself, but the HD DVD player is not a part of that: it is a separate application that lives on the HD DVD drive. You can tell which version of the HD DVD player you have by running any title, getting the Player UI up and clicking on the ? button: the new version is 2.0.4629, the previous versions were 4248 and 4113.

What's new? In summary superb Title Compatibility, Audio Improvements, and New Features. Plus a myriad of bug fixes and performance improvements.

The main area of Title Compatibility improvement as been Standard Content titles (aka CAT1 titles). The CAT1 engine can handle everything that is thrown at it now, including all of the Discovery titles, the burn-at-home discs that the ULead and other tools create, and a particularly interesting forthcoming title I can't name, but should be called "CAT1 Torture Test Disc".

For Advanced Content titles (aka CAT2) the player is now the most spec-compliant player available, and has had some areas re-written for performance and specification-compatibility. Plus we had to make sure the Matrix Trilogy played perfectly of course!

A big improvement has happened for Dolby Audio. The original versions used DRC (dynamic range compression) on Dolby sources but this could produce muddy sound on occasion: the DRC defaults to off now, with a notable improvement in some titles. In addition the ability to re-encode all audio as DTS over S/PDIF was added, which further improves audio quality (assuming your receiver can handle DTS of course). My workmate Raj spent an inordinate amount of time on audio/video sync issues, the most famous being the hammer scene in Batman Begins. That, plus every other reported sync issue has been addressed with this update: critical measurements indicate we have a closer AV sync than another other player. (Raj never wants to watch Batman Begins ever again: I have the same feelings for Bourne Supremacy, as I worked on an AV sync issue for the CES 2006 HD DVD demo which featured that title).

Note that the issues with trouble reading a few Universal discs (like Children of Men and The Good Shepherd) has not been addressed by this software update: that was a manufacturing problem and if you have an effected disc you can get a free replacement.

There are two New Feature areas: the first is improved Network support. Soon you will see titles appearing that will start to show what is possible when your HD DVD player has access to additional content via its mandatory ethernet connection. Blood Diamond has been announced with networking features, something that the Blu-Ray version lacks (because of course Blu-Ray players cannot do networking, or picture-in-picture, or a bunch of other things). If you want to try these new features out, be sure to enable Network Support in the player first (and you'll need an Xbox Live connection) via the new button in the on-screen UI. The other new feature is asynchronous video playback. Hard to explain succinctly what this is (and even harder to implement!) but it will allow content authors to make even better content on HD DVD.

I have to confess that my personal participation in this release was minimal: I was working on something else that hasn't been announced yet. I am psyched for the team though: this is a truly great release.
 
...that will start to show what is possible when your HD DVD player has access to additional content via its mandatory ethernet connection. Blood Diamond has been announced with networking features,...

If you want to try these new features out, be sure to enable Network Support in the player first (and you'll need an Xbox Live connection) via the new button in the on-screen UI.

cool! :cool:
 
That's what I think too. It should default to DD for DD-based codecs, DTS for DTS-based codecs. I don't like transcoding...

There's no advantage to downconverting to DD from DD+. DD+ is not simply higher-bitrate DD. It is actually coded differently meaning that there is going to be transcoding no matter which destination format you use. So you are better off with DTS because of the higher supported bitrate.

See the wikipedia entry under Media players and downmixing.

The various flavors of DTS are different in this way as they always contain a core standard DTS stream that can be extracted. No transcoding required.
 
There's no advantage to downconverting to DD from DD+. DD+ is not simply higher-bitrate DD. It is actually coded differently meaning that there is going to be transcoding no matter which destination format you use. So you are better off with DTS because of the higher supported bitrate.

See the wikipedia entry under Media players and downmixing.

The various flavors of DTS are different in this way as they always contain a core standard DTS stream that can be extracted. No transcoding required.

Weird, i thought the DD stream could be extracted from the DD+ without any transcoding.. so many codecs to keep track off...
 
Love the update! :D

After I put in The Departed, I selected the Dolby Digital TrueHD option on the disc and then chose DTS as my output on the Xbox360. It works like a charm! ;)

I don't have muffled sound either, DTS sounds better and just as loud as Dolby Digital (and I have a Yamaha receiver). I think the problem may be is that instead of selecting the TrueHD option on their HD DVD discs, people are converting the already lossy Dolby Digital to DTS. Maybe I'm wrong. :???:

I can't wait for my pioneer receiver to come in so I can test WMA Pro output. :cool:

Ah, here is what amir has to say about the DTS issue:

amir said:
Your investigation is good as it should show a 4db difference. Here is the issue.

In our three audio encoders, we use a dial-norm of -31 db as required. For all DD decoders, they will boost this level by 4db to -27db total. Unfortunately, with DTS, this is not consistent. Some receivers do this 4db boost, while others do not. We consulted with DTS and they told us to use -31db so that is what we are doing. I believe THX certification requires this 4db boost so receivers with that logo, should have equal level to DD.

This is not limited to us but anyone doing the same encoding. Here is the thread on Toshiba HD DVD player and DTS: [insert an avs forum link]

So just turn up the volume a bit and you should be good to go

I guess my receiver doesn't have this problem.
 
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I think the problem may be is that instead of selecting the TrueHD option on their HD DVD discs, people are converting the already lossy Dolby Digital to DTS. Maybe I'm wrong. :???:
I don't think so: every HD-DVD has a Dolby Digital Plus ST, which data rate can catch up 6 mbps (next to 1,5 mbps of X360 DTS encoder).
 
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Well 6 mbps max, but that's rather irrelevant, as a rule of thumb it's generally never a good idea to convert from a lossy codec to another lossy codec. It would be much better if everyone made sure they chose the TrueHD option.

But obviously the problem has already been identified, some receivers play DD with a +4 gain (thus making it seem DTS has Dynamic Range Compression on). Just turn up the volume with DTS output, problem solved!
 
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