4.0

Advanced authoring
All DoStudio Authoring actions are subject to conditional execution if you so desire. Conditional execution
is where the Blu-ray Disc™ evaluates a condition (audio track 1 is currently playing, subtitles are off, the
main menu is on screen, etc.) and executes a specific action according to the situation described in the
condition. Conditions allow you to create a Blu-ray Disc that behaves logically according to user input
rather than simply following a predetermined path.
The most common use for conditions is to determine playback settings (audio track, subtitle track, etc.) and
adjust the menu display accordingly.
If you are familiar with evaluating System Parameter Register Memories (SPRMs) in DVD projects, you will
find that conditions serve a similar purpose. Conditions are offered in plain language, so they are easier to
use. They are also more flexible and powerful since they are governed by BD-J code.
Conditions can be used to create sophisticated logic paths as well, which is useful for gaming, simulation,
and other advanced authoring techniques.
Using conditions
Adding a condition
Conditions can be added to any element that can receive an action. To review, actions can be assigned to
menu navigation buttons (Enter, Up, Down, Left, Right), remote control buttons (Play, Pause, Pop-Up
Menu, Rewind, Fast Forward, Red Button, Green Button, Blue Button, Yellow Button), Title Start, Title End,
and Chapter Start.
1. Right-click the element and choose Add Condition.
You can copy and paste conditions that you have assigned to menu elements. Right-click the
condition and choose Copy (or press Ctrl+C). To paste the condition, right-click the desired
menu element and choose Paste, or press (Ctrl+V).
Chapter 12
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