Generate polished product demo videos

Create polished demo videos from screenshots and scene descriptions with story, narration, and effects

When creating product demo videos requires automated scene composition, narration, and effects rather than manual video editing.

• · scene descriptions: product walkthrough, feature showcase, or marketing teaser
• · screenshots or live app URLs
• · narration script or talking points

• · polished demo video (MP4, WebM)
• · scene transitions + effects + narration (edge-tts)
• · story structure validation

• · Playwright (screenshot capture)
• · ffmpeg (video composition)
• · edge-tts (narration synthesis)
• · scene design system
• · stdlib Python tools

• · narration is text-friendly (edge-tts works for accented speech with limitations)
• · app UI is stable (no dynamic content causing screenshot flicker)

• · edge-tts pronunciation fails on technical terms or proper nouns
• · Video length explodes with too many scene transitions
• · Screenshot capture misses responsive breakpoints

• · Orchestrates Playwright + ffmpeg + edge-tts (industry tools)
• · Scene design system (consistent look & feel)
• · Story structure validation (beginning, middle, end)
• · Ready-to-ship output (MP4, WebM)