DiscoSync

Multi-angle video sync review tool for legal discovery footage

Desktop app (Tauri + React + TypeScript + Tailwind), fully local/offline, read-only against source video files. Built for reviewing multiple camera angles of the same event, side by side, in perfect sync.

Features

• Add one video, or several angles of the same event. Type in each one's start time of day and DiscoSync lines them up to play together automatically.
• Drag and drop to rearrange.
• Fine-tune sync by hand: When a video looks slightly out of step, adjust one frame at a time.
• Sync videos based on shared audio: DiscoSync looks at the raw sound waves and figures out exactly how to line up videos
• Slow down to a crawl (one frame per second) or speed up to 16x.
• Zoom into video
• Bookmark important moments and jump straight back to them.
• Loop a stretch of footage to watch it over and over without re-scrubbing.
• Save your project and pick up exactly where you left off

Install

See Releases for the latest build.

Development Setup

npm install
npm run tauri dev

Development Prerequisites

• Node.js 18+
• Rust toolchain (via rustup), required by Tauri to build the native backend.
• Platform build tools per the Tauri prerequisites guide.

Project layout

src/                  # React frontend
  components/         # UI screens/components
  lib/                # Native (Tauri) bridges, time-sync math
  types/               # Shared TypeScript types (project/session model)
src-tauri/            # Rust backend (Tauri)
  capabilities/        # Permission scopes (dialog, read-only fs, asset protocol)
  src/                 # Rust source

Build

npm run tauri build

Contributing

Issues and pull requests are welcome. Free to fork and adapt for your own use.

License

MIT, see LICENSE.