Open source components

Complete corresponding source code

V:I:I:Y is proprietary software, but it is built on top of components licensed under the GNU Lesser General Public License version 3. Those licenses require us to make the complete corresponding source code of those components available to you. This page is where it lives.

The pages below are referenced by name from THIRD-PARTY-NOTICES.txt, which is installed with V:I:I:Y and also reachable from the Start menu. Each page identifies the exact version we distribute, so the source you obtain matches the binary you were given — not a later one.

Components

• Qt 6.11.1 — LGPL v3 / Apache 2.0, dynamically linked
• FFmpeg n8.1.2-20260621 — LGPL v3, dynamically linked, plus the ffmpeg command-line tool

Ask us instead

You do not have to use these links. Write to legal@viiy.tech naming the V:I:I:Y version you have, and we will send you the complete corresponding source code for that build on physical media or by download, for no more than our cost of doing so. This offer is valid for at least three years from the date you received the binary.

What is not here

Components that are not under a copyleft license — the NDI SDK, the Blackmagic DeckLink SDK, Spout2 (BSD-2-Clause) and the Microsoft Visual C++ Runtime — carry no source-provision obligation of this kind. Their terms and notices are in THIRD-PARTY-NOTICES.txt and in the licenses folder installed with V:I:I:Y.