βDIRECTUNE · SERVICE INFORMATION
Software and licenses
Date enacted/effective:September 8, 2026
DirecTune uses the following third-party software. Copyright belongs to the respective authors. Licenses and source code are available without signing in or paying a fee.
On-device AI image generation (beta)
On-device AI image generation is available only on supported PCs when its feature flag is enabled. Model weights stay in browser storage, and generated images are not sent until added as media. The feature remains disabled until model delivery and real GPU verification are complete.
| Software | License | Source |
|---|---|---|
| ONNX Runtime Web 1.30.0 | MIT | Microsoft |
| @huggingface/tokenizers 0.2.0 | Apache-2.0 | Hugging Face |
| Z-Image-Turbo（固定版のモデル配信後） | Apache-2.0 | webnn / Tongyi-MAI |
Video and audio processing
| Software | License | Corresponding source |
|---|---|---|
| libav.js 6.10.9.0 / FFmpeg 9.0 (AVI / GIF conversion) libvpx 1.16.0 / Opus 1.6.1 / emfiberthreads 1.3 / zlib 1.3.2 | LGPL-2.1 or later / BSD, 0BSD, zlib (full text in each source archive) | libav.js, configuration, and build instructions FFmpeg / libvpx / Opus emfiberthreads / zlib Rebuilding and replacing the libraries / Distributed file list |
| Mediabunny 1.55.5 · Audio extensions | MPL-2.0 | Download source |
| FFmpeg 8.0.1 (AAC encoder) | LGPL-2.1 or later | Download source |
| LAME 3.100 (MP3 encoder) | LGPL-2.0 or later | Download source |
| libFLAC (FLAC encoder) | BSD license | Official repository |
This software uses code from the FFmpeg project under LGPL-2.1 or later. We build the AAC and MP3 encoders distributed to browsers from the sources above. The relevant Mediabunny source and our changes are provided under MPL-2.0; FFmpeg and LAME are provided under their respective LGPL terms.
Download corresponding source, bridges, and build instructions together
Rebuild and replacement instructions and copyright notices
Distributed files and SHA-256 hashes
3D character display
| Software | License | Corresponding source |
|---|---|---|
| three.js 0.185.1 | MIT | GitHub |
| @pixiv/three-vrm 3.5.5 | MIT | GitHub |
| opentype.js 2.0.0（3Dテロップの字形解析） | MIT | GitHub |
| Noto Sans JP Black / Noto Serif JP Black / Dela Gothic One / Zen Maru Gothic Black | SIL Open Font License 1.1 / SIL Open Font License 1.1 / SIL Open Font License 1.1 / SIL Open Font License 1.1 | Noto Sans JP / Noto Serif JP / Dela Gothic One / Zen Maru Gothic |
The source and license terms for each 3D character model are shown on the selection screen and in the model LICENSE.txt.
Your rights under the licenses
We do not restrict modification, redistribution, replacement, or analysis for debugging as permitted by each license. The libraries are provided without warranty as stated in their respective licenses. Rights in DirecTune's own service are separate from rights in third-party software.