About Threnic
THE GPU-ACCELERATED LYRIC VIDEO ENGINE
About the Project
Threnic is designed, architected, and built from the ground up by NXN Technologies LLC.
What started as a personal frustration with the lyric video creation workflow became a production-grade, browser-native rendering engine. Threnic handles real-time 3D scene composition, audio frequency analysis, GPU-accelerated post-processing, and hardware-encoded 4K video export, all running locally in the browser with no server dependencies.
The Vision
Threnic was born from a simple problem: creating high-quality, professional lyric videos is either too expensive or too time-consuming. Traditional workflows require desktop software like After Effects — expensive licenses, steep learning curves, and hours of CPU-heavy rendering for even a simple three-minute video.
The goal was to bridge the gap between static lyric generators and high-end 3D motion graphics, giving independent artists and creators the power to visualize their music with cinematic precision — without the cost or complexity of professional post-production software.
The result is Threnic: a browser-based engine that produces professional-quality lyric videos in real time, with zero software installation and zero cloud dependencies. It is free and open source: 4K export and watermark-free output are included for everyone.
The Technology
Threnic is built from the ground up using modern web technologies that leverage the GPU directly through the browser — no plugins, no Electron wrapper, no cloud offloading.
Next.js
Server-side rendering and static generation for fast page loads and SEO
Three.js / React Three Fiber
GPU-accelerated 3D rendering engine for real-time scene composition
WebCodecs API
Hardware-accelerated video encoding for 4K export directly in the browser
Web Audio API
Real-time FFT frequency analysis driving audio-reactive visual parameters
TSL Shaders
Custom GPU shaders for bloom, distortion, chromatic aberration, and film grain
Local-First Architecture
Zero server dependencies; all processing happens on the user's machine
By rendering scenes using WebGL/WebGPU directly in the browser, Threnic achieves real-time, audio-reactive 3D visual previews. A custom WebCodecs export pipeline enables hardware-accelerated video encoding up to 4K at 60fps — processing renders locally on your hardware in minutes.
How Threnic Compares
| Feature | Threnic | After Effects | Online Generators |
|---|---|---|---|
| Real-Time Preview | ✓ | ✗ | ~ |
| Audio Reactivity | ✓ Built-in | Plugin Required | ✗ |
| 4K Export | ✓ | ✓ | ✗ |
| GPU-Accelerated | ✓ | Partial | ✗ |
| No Watermarks | ✓ | ✓ | ✗ (Free tier) |
| Zero Install | ✓ | ✗ | ✓ |
| Local Processing | ✓ | ✓ | ✗ (Cloud) |
| Cost | Free (open source) | $22.99/mo | $10–30/video |
| Export Time (3 min) | 2–5 min | 30–120 min | 10–30 min |
NXN Technologies LLC
Threnic is developed and maintained under NXN Technologies LLC, an independent software company. NXN is focused on pushing the boundaries of what modern browsers can do — building tools that are powerful, accessible, and respect the creator's ownership of their work.
That philosophy is baked into Threnic: free, open source, fully local, and built to respect the creator's ownership of their work.
Roadmap
Threnic is actively developed with new features shipping regularly:
- ▸WebGPU rendering pipeline for next-generation shader performance
- ▸Expanded effect library with particle systems and 3D text extrusion
- ▸Project template marketplace for community-shared visual styles
- ▸Vertical (9:16) canvas mode for TikTok and Instagram Reels
- ▸Batch export for multiple resolution and platform presets
Legal & Attribution
Threnic is open source software © 2026 NXN Technologies LLC, released under the MIT License. It is built on other open-source software and redistributes third-party fonts, visualizer presets, and media. Those components are credited, with their licenses, in our third-party notices. Bundled font licenses are shipped at /fonts/README.md.
Get Started
Ready to create your first lyric video? Dive straight into the editor. For questions, visit the FAQ or reach out at nxntechnologiesllc@gmail.com.