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Re: Hi Wilkes, welcome here :)

Posted by neilwilkes@opusproductions.com (P) on June 11, 2004 at 08:01:09

In Reply to: Hi Wilkes, welcome here :) posted by Eric LeRouge on June 11, 2004 at 06:22:06:

I think that yet again I have not explained myself correctly!

The whole hybrid disc thing with Video_TS import is very much a two bladed

sword.

What happens is this:

With Chrome, you can indeed import the video_TS, and in Chrome 2 there is a

legality checker to ensure that the imported Zone is actually legal.

This is not the whole story though. There are two kinds of hybrid.

1/. Linked Video Zones

2/. Non Linked Video Zones.

With type 1, you can access the video content from the menu of the Audio

zone. This does require that the video zone is DVD-A legal, and this is the

type with the problems. Apparently Chrome 2 will tell you where your video

Zone is not compliant. It will also have in the manual a list of the

prohibitions.

With type 2 hybrids, they will work in much the same way as an SACD does,

and what layer is played back will depend on what player is used. With

Chrome 1 I have successfully created several non linked hybrids that work

perfectly. On a DVD-A player you get the Audio Zone, and on a DVD-V player

it ignores (can't understand) the Audio Zone and goes straight to the VTSM

in the Video Zone. You should also be able to access this Video Zone in a

Universal player that reads both by disabling the Audio Zone access in the

players setup menu.

Obviously, the preferred method is for a linked hybrid.

To do this, you would create group 1 as normal, if you have Chrome 1.0.57

ypu can do this with the undocumented Beta code that is present. Import

your VTS as the first thing you do, create group 1 and right click on track

1. You will get the option to link to any VTS in the imported Video Zone.

If it is not a "legal" VTS, then Chrome will not import it.

It is perhaps a bit wrong to state outright that you "cannot use any

abstraction layer tools" to do this. IF you keep things in the Video Zone

extremely simple & basic then you stand a chance.

Then, your DVD-A player will be able to "see" the video Zone.

Don't forget to include Audio from the hirez section, or else a pure Audio

Only player will have problems at this point.

There are a whole heap of restrictions in compatibility for imported Video

Zones. This is the troublesome area.

It is also the reason that there are so few Authoring houses that are

producing these hybrids. There is currently Abbey Road in the UK only, and

soon there will be us. I just have a few wrinkles to knock out. In the USA,

I believe there are 4 houses capabe of doing this. It is about as cutting

edge as things get in the Audio world, but so well worth getting to grips

with.

It can be done though. I have done it using Chrome 1, and with Chrome 2 it

will be even easier, due in part to the Video Zone Auto Mirror feature.

This will use the built in SurCode Dolby Digital Encoder to create a very

basic DVD-A legal Video Zone automatically from the hirez content. Not sure

how it will work in practise yet, as I am now waiting for Chrome 2 to be

delivered. I will post here regularly now I remember it!

It is far from a useless feature in Chrome 2, as they are gunning for Sonic

Solutions' market share, and a full featured DVD-A app must havethis kind

of functionality. How well WaveLab will cope remains to be seen. 5.0a has

some nasty bugs in it that should have been caught at BEta, yet got

through. For example you cannot copy a larger file than 1Gb from a DVD-A

disc, despite the claim that it will copy an unprotected disc. I also

believe that the VTS import is similarly crippled, due to the legality

issues I have mentioned. The lack of MLP & DLT support is also a major

drawback for hybrids, or as you have noted you will quickly run out of disc

space.

As for shared LPCM files, this is simply impossible. The 2 Zones are

different animals using different multiplexes of essentially the same

material. For example, you cannot use 24/96 5.1 in LPCM for the Video Zone.

There just isn't the available bitrate, as your maximum for Audio in the

Video Zone is 6.144Megabits/second, but in DVD-A it is up to 9.8

Megabits/second. This is also why MLP is so vital. Most DVD-A uses MLP

wether it says so on the box or not. You cannot get 24/96 5.1 without it.

The required bitrate is over 13MB/sec.

This post is made possible by the generous support of people like you and our sponsors:

Schiit Audio

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