Preparing the Project
Creating an MPEG-H Audio production is straightforward, after initial parameters are set. The sample rate must be 48 kHz or 96 kHz, ASIO buffer size 512 or 1,024 samples and 3D pan mode set to 3-Layer. Any Nuendo track can be an MPEG-H component (object or bed). It is a good idea to organize the audio tracks or stems you want to assign as components into subgroups. The Renderer for MPEG-H allows you to configure metadata parameters, monitor changes in real time and then export these settings as an MPEG-H ADM or MPEG-H Master file. The Renderer must be inserted on the main mix output bus, which should correspond to the largest speaker setup your studio can support. There is also a Setup Assistant to help prepare sessions for an MPEG-H Audio project with a few mouse clicks, including essential parameters and basic routing, a channel-based bed component and an MPEG-H preset.
Scene authoring concepts
An interactive, personalized experience is a key feature of MPEG-H Audio, and this requires a range of metadata. Music and effects are usually in a bed mix, then extra audio objects can be configured to move freely in space and can be customized by the viewer. For example, it enables sports events to feature a main channel component, but with extra audio objects giving the listener options of the main commentary in different languages, content from the different teams, and more. Options for the end user can range from simple interactivity, via a single button push on the remote control, to more complex control of the audio elements, which can be enabled in the advanced MPEG-H Audio interactivity menu. An MPEG-H Audio scene is made up of Presets, Components, and Switch Groups.