Pacy Labs Spade Logo
PACY LABS
Olamilekan David Adegoke • OD
← Back to Systems CatalogProprietary Architecture

Huiyi

Zero-App Collaborative Event Video Recap Engine & Multimodal AI Timeline Director

Visit Live SystemCommission an Enterprise Build
https://huiyi.cruisehq.fun
Production
Huiyi Production Interface
0 App / 0 Account
Guest Friction
Distributed Modal FFmpeg
Render Workers
Cloudflare R2 Direct
Storage Architecture
Charge-On-Success Ledger
Credit Metering

Executive Architectural Overview

Collaborative event video platform turning raw guest-shot mobile footage into cinematic recaps. Guests contribute clips instantly via dynamic QR codes with zero app downloads and zero accounts. Event organizers direct edits using natural language prompts via Gemini Multimodal and distributed Modal cloud FFmpeg render workers with Bachs charge-on-success credit metering.

Core Architectural Accomplishments

Built zero-friction mobile web ingestion enabling hundreds of event guests to contribute raw video clips via dynamic QR codes without app downloads.
Integrated Gemini Multimodal director translating natural language instructions into concrete video cut-points, transition pacing, and soundtrack sync.
Architected cloud video processing using Cloudflare R2 object storage and distributed FFmpeg render workers on Modal.
Implemented fair credit metering backed by Bachs hosted checkout with charge-on-success guarantees and tamper-proof ledgering.

Deterministic Guarantees

Concurrency Model
Charge-on-success credit deduct locks, idempotent webhook collection, atomic event asset trees.
AI & Protocol Layer
Gemini Multimodal video reasoning, natural language director prompts, FFmpeg composition.
Database & Infrastructure
Supabase PostgreSQL, Cloudflare R2 media storage, Modal cloud render workers.
SUBSYSTEMS • ARCHITECTURAL MODULES

Integrated System Components

MODULE 01

Zero-App Guest Uploader

Mobile-first web interface allowing wedding, conference, and festival guests to upload high-res video clips instantly via QR scan without account friction.

MODULE 02

Gemini Multimodal Director

Analyzes raw attendee video footage, transcribes dialogue, identifies emotional peaks, and compiles an intelligent timeline edit based on organizer prompts.

MODULE 03

Cloud FFmpeg Rendering Pipeline

Distributed video composition engine applying watermarks, color grading, audio leveling, and dynamic transitions across multiple candidate edits.

MODULE 04

Bachs Metered Credit Ledger

Strict credit accounting charging users only upon successful render completion with verified collection.succeeded webhook security.

MODULE 05

Cloudflare R2 Direct Uploads

Presigned direct-to-bucket media uploads bypassing application server bottlenecks and enabling concurrent multi-gigabyte video ingestion.

PRODUCTION STACK • VERIFIED

Technology Architecture Matrix

Frontend & Runtime
  • Next.js (App Router)
  • Tailwind CSS
  • Zero-App Mobile QR Uploader
  • Timeline Director Controls
  • Watermark Designer
DB & Concurrency
  • Supabase PostgreSQL
  • Bachs Credit Metering Ledger
  • Atomic credit_deduct on Render Success
  • Multi-Version Event Asset Tree
AI & Realtime
  • Gemini Multimodal Director
  • Natural-Language Editing Prompts
  • Scene Quality & Audio Scorer
  • Automated Clip Assembly
Payments & Protocols
  • Bachs Hosted Checkout (10/$9, 40/$29, 120/$79)
  • Verified collection.succeeded Webhooks
  • Cloudflare R2 Direct Uploads
  • Modal Cloud FFmpeg Workers
Previous Case Study
BAUNTI
Commission an Enterprise Platform
Next Case Study
GozAI