I owned the path from upload to delivery, including the AI decisions, active-speaker framing, browser-based rendering and the correctness checks that make a fast output trustworthy.
WorkGreenPost
AI video repurposing
GreenPost
An AI video repurposing platform that turns long-form recordings into editable, social-ready clips.
Overview
GreenPost is a media pipeline with a product surface on top: long recordings become a set of editable, social-native clips without losing control over the final frame.
What I owned
Engineering challenges
Selecting useful moments from long-form recordings while keeping the editing model understandable.
Keeping active-speaker framing, aspect ratios, captions and social overlays coherent across generated clips.
Reducing rendering time and cost without relaxing visual, audio, timing, font or final-frame correctness.
Selected outcomes
The tested nine-clip workload moved from 8:01 to 3:43.
Outputs were validated for visual, audio, timing, font and final-frame correctness.
The tested setup rendered an approximately $0.04 nine-clip batch.
Built with
Next.jsFastAPIWebCodecsCanvasFFmpegMediaPipeModal