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Thaluna SCREEN TRANSLATOR WIN · ANDROID · LINUX
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Open-source licenses & source code

This page covers source-access obligations for libraries actually bundled with the current Thaluna Real-Time Translator Windows Full and Demo builds. The LGPL permits the separately linked Thaluna application to remain proprietary while users retain their rights to modify and replace its LGPL libraries.

Qt, PySide6, Shiboken6 and Python components

The release includes Qt 6.9.2, PySide6 6.9.2 (Essentials and Addons), and Shiboken6 6.9.2 under LGPL-3.0-only. It also includes chardet 5.2.0 under LGPL-2.1-or-later, certifi 2025.8.3 under MPL-2.0, and tqdm 4.67.1 with MPL-2.0 and MIT notices. The GPL-only Qt Virtual Keyboard is not included.

Exact, SHA-256-verified source archives accompany every updated Full and Demo download in _internal/third_party/copyleft/. You can replace the separate Qt DLL/`.pyd` libraries or the external chardet Python files with compatible modified copies. The EULA preserves the applicable LGPL rights.

The smaller archives are also hosted here. The larger qtbase and GCC source archives are included in each Windows download; you may also use their exact official mirrors below. If you need us to send you any of these source archives, email thaluna.dev@gmail.com. We will provide them electronically at no charge for at least three years after this release's distribution.

GEOS, OpenBLAS runtime and libiconv

Shapely 2.1.2 bundles GEOS 3.13.1 as separate LGPL-2.1-or-later DLLs. NumPy 2.1.2 and SciPy 1.16.2 include OpenBLAS DLLs with GCC 10.3.0 runtime code under GPL-3.0-or-later with GCC Runtime Library Exception 3.1. The lxml 6.1.0 Windows extensions include GNU libiconv 1.17 under LGPL-2.1-or-later. The corresponding GEOS, GCC, lxml and libiconv source archives are listed above and included in both Windows downloads.

See the build and replacement instructions for the separate GEOS DLLs and for rebuilding lxml with a modified libiconv.

GCC runtime DLLs from Paddle

PaddlePaddle GPU 3.0.0 bundles GCC 6.2.0 libgcc and libgfortran (GPL-3.0-or-later with GCC Runtime Library Exception 3.1) and libquadmath (GNU Library GPL v2-or-later). The exception permits a separately licensed application, but the distributed DLLs still need source access. GCC 6.2.0 and MinGW-w64 v5 source archives accompany both Windows downloads; the smaller MinGW archive is also hosted below. The DLLs remain replaceable.

FFmpeg

Thaluna Real-Time Translator uses libraries from the FFmpeg project under the GNU Lesser General Public License version 2.1 or later. Copyright remains with the FFmpeg contributors.

This page provides the source materials corresponding to the FFmpeg libraries supplied through Qt/PySide6 6.9.2 and OpenCV in the Windows Full and Demo builds. The published source inventory covers FFmpeg 7.1.1, 4.4.4 and 4.4.6. Thaluna redistributes the upstream binaries without modifications.

Notices and build instructions

The OpenCV materials include FFmpeg, AOM, libvpx, OpenH264 API headers, wrapper sources and build scripts. Full OpenCV source trees are linked below at their exact upstream revisions. The Qt materials include FFmpeg sources and the original Qt provisioning scripts. Each archive retains its upstream copyright and license notices.

Source downloads

These downloads are available without an account, API key or purchase. The full OpenCV source trees are larger files served directly by the official OpenCV repository; the remaining source archives are also hosted here.

Using modified libraries

The Thaluna EULA preserves your rights under the applicable open-source licenses, including replacing LGPL libraries and reverse engineering the combined application to debug modifications to those libraries. See the build and replacement instructions above.

Complete source materials are packaged in _internal/third_party/ffmpeg/ in builds made with this source bundle. Earlier builds using the same DLLs are covered by the binary checksums above; their source materials are available here as well.

For license or source-access questions, or to request an exact copy of any corresponding source archive included in the Windows download, email thaluna.dev@gmail.com. We will provide the source electronically without charge for at least three years after this release's distribution.