Cinematic audio visualizer. Drop in a song and a still, pick a look, and export an MP4 on your machine.
Designed by JMHBM. Built with Grok (Harper, Benjamin, and Lucas / xAI) and Jan-4B-Base-Instruct (Menlo Labs Research). Copyright equally shared. CC BY 4.0.
Latest: 1.0.8 · Windows installer + Debian / Ubuntu .deb
Download Renderbolt-1.0.8-setup.exe from the 1.0.8 release.
64-bit Windows 10/11. Windows 11 already has WebView2; Windows 10 may need the Evergreen runtime. The installer is unsigned, so SmartScreen / Avast may warn on first run.
Hardware encode when the driver is present: AMD AMF, NVIDIA NVENC, Intel QSV. Otherwise CPU (libx264). FFmpeg is bundled.
sudo apt install ./renderbolt_1.0.8_all.debGet the file from the 1.0.8 release. Needs Python 3.10+, Tk, Pillow, NumPy, and FFmpeg. On AMD GPUs, install mesa-va-drivers.
Open Renderbolt from the app menu, or run renderbolt.
sudo apt install python3-tk python3-pil python3-pil.imagetk python3-numpy ffmpeg
pip install -r desktop/requirements.txt
python3 desktop/renderboltHeadless (no window):
python3 desktop/renderbolt render \
--audio song.mp3 --cover art.jpg --out out.mp4 \
--look looks/night-drive.jsonStarter looks live in looks/. Keys 1–6 load them in the Linux studio.
- Background still from disk, with beat bounce and edge fade
- Optional song / artist / album titles
- 2D or 3D: waveform, EQ bars, circular, liquid
- Color presets, custom palette, base → tip gradient
- Place, rotate (0–360°), stretch, and mirror
- 16:9 · 9:16 · 1:1 · 720p / 1080p / 4K · 24 / 30 / 60 fps
| Key | Action |
|---|---|
| Space | Play / pause |
| G | Generate MP4 |
| R | Shuffle look |
| 1–6 | Starter looks (Linux studio) |
| S | Save current frame (PNG) |
| F1 | About |
| ← → | Seek 2 seconds |
| Home | Restart |
| Ctrl+O | Open audio |
| Ctrl+I | Open background |
CC BY 4.0 — credit JMHBM.