Previsualization is one of the most critical and expensive steps in filmmaking, often costing hundreds of thousands of dollars and taking weeks to complete. It is the stage where directors, producers, and creative teams decide pacing, mood, and visual tone before committing to costly production. GEMGEM.SG is an AI-powered previsualization platform that analyzes a script, breaks it into scenes, and generates multiple keyframe images for each—complete with estimated playback times. This allows creators to preview and imagine emotions, atmosphere, and rhythm more deeply. With one action, creators can apply mood and tone adjustments across the project, cutting 20–30 hours of manual editing while maintaining cohesion. Internal testing showed up to 70% fewer rework cycles, accelerating approvals and saving resources. By delivering dynamic, timed storyboard videos within 1–2 days instead of weeks, GEMGEM.SG reduces costs, streamlines collaboration, and enables early cuts into distribution-ready teaser content, enabling more affordable marketing.