soroush.asadi 3eab1056c8 feat(remotion): audio layer — self-authored music bed + transition SFX in FlexStory
Adds audio to the scene engine without any third-party/geo-blocked sourcing: the
beds + SFX are synthesized with ffmpeg, so they're license-free (CC0, self-authored)
and need no acquisition — the same play as self-authoring Lottie.

- public/audio/: music-ambient.mp3 (soft 3-tone pad, looped) + sfx-whoosh/pop/chime.
- FlexStory: optional music/musicVolume/sfx props (optional so the existing render
  binding needs no change). Renders <Audio loop> for the bed + a whoosh at each
  scene start and a chime on the final scene, driven by precomputed scene starts.
- check-assets: now also scans public/audio (+ lottie) with folder-prefixed keys;
  assets.json ledgers the 4 audio files (CC0 self-authored).

Verified: tsc clean; a 6s FlexStory render produces an MP4 with a real audio stream
(ffprobe: codec_type=audio). NOTE: these are placeholder/SFX-grade; a premium
curated music library (by vibe) is a separate sourcing sweep, and the studio music
picker → FlexStory `music` prop is a follow-up wiring.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-23 17:31:19 +03:30

FlatRender

AI-powered video and image creation platform. Create professional videos and images with templates, a drag-and-drop studio, and one-click export.

Products

  • Video Maker — timeline editor, Konva canvas, scene browser, transitions, audio, nexrender export
  • Image Editor — Konva canvas, filters, crop, background removal, layer system
  • Video Trimmer — ffmpeg.wasm in-browser trim + crop + export
  • Templates — browsable marketplace with category sidebar

Quick Start

npm install
cp .env.example .env.local   # fill in your credentials
npm run dev                  # http://localhost:3000
Repo Path Purpose
flatrender D:\Projects\flatrender This repo — Next.js app
flatrender-admin D:\Projects\flatrender-admin\admin-api .NET 10 Admin API
flatrender-admin D:\Projects\flatrender-admin\admin-ui React Admin SPA

Stack

  • Next.js 15 App Router · TypeScript · Tailwind CSS · shadcn/ui
  • Supabase — auth, database, storage
  • Stripe — subscription payments
  • React-Konva — canvas editor (video + image)
  • next-intl — Persian (default) + English i18n
  • ffmpeg.wasm — browser-side video trimming
  • nexrender — server-side After Effects rendering

Environment Variables

See .env.example for the full list. Minimum required to run:

NEXT_PUBLIC_SUPABASE_URL=
NEXT_PUBLIC_SUPABASE_ANON_KEY=

Without Supabase the app runs in mock mode (studio uses localStorage).

Database Migrations

Run in order in Supabase SQL Editor:

  1. supabase/migrations/001_profiles.sql
  2. supabase/migrations/002_render_jobs.sql
  3. supabase/migrations/003_projects.sql

Admin Panel

The admin panel at D:\Projects\flatrender-admin manages templates, categories, and media. When ADMIN_API_URL=http://localhost:5000 is set, the Next.js app fetches live data from it. Without it, hardcoded fallback data is used.

See CLAUDE.md for full development guide.

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