Sonic Scenarist brings Scenarist SD's proven performance and reliability to Blu-ray Disc, providing a comprehensive, professional authoring solution for the next generation of optical media. Offering maximum playback compatibility and complete cell-level control for both standard content and advanced interactivity, Scenarist 4 was developed in collaboration with the HD Authoring Alliance (HDAA), the worldwide association of top DVD authoring houses dedicated to facilitating the successful rollout of Blu-ray Disc titles.