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Open Source Notices

Last updated: October 1, 2026

Vizloom includes third-party open source software. The components below are distributed under their own license terms, which govern their use, modification, and redistribution. Those terms prevail over any conflicting term of the Vizloom End User License Agreement for the components they cover.

FFmpeg

Vizloom uses FFmpeg, licensed under the GNU General Public License, version 2 or later. FFmpeg is run as a separate program; it is not linked into Vizloom's own code. The complete corresponding source for the FFmpeg build we distribute is available below.

Complete Corresponding Source

The FFmpeg build distributed with Vizloom is FFmpeg 8.1.1, statically linked with x264 (GPL v2 or later), LAME (LGPL v2.1), and libvpx 1.17.0 (BSD-3-Clause, with the WebM Project's Additional IP Rights Grant covering its VP8/VP9 patents). It contains no non-free components and no libx265/HEVC. It is configured with:

--enable-gpl --enable-libx264 --enable-libmp3lame --enable-libvpx --disable-autodetect --enable-static --disable-shared --disable-debug --disable-doc --disable-videotoolbox

The build enables the GPL parts of FFmpeg with --enable-gpl but does not pass --enable-version3, and pulls in no (L)GPL v3-only components, so its effective license is GPL v2 or later.

The complete corresponding source for this build — the pinned FFmpeg, x264, LAME, and libvpx sources, the exact build scripts and configure invocation used to produce it, the GPL v2, LGPL v2.1, and libvpx license texts, and a README documenting how to build and verify it — is available as a single archive:

ffmpeg-8.1.1-libvpx-1.17.0-source.tar.xz (≈20 MB)

SHA-256: 719452b1822c019face2f2225b993d3ee07ccccc9a7cf93ea4fc9009f18beb12

Earlier releases of Vizloom shipped an FFmpeg 8.1.1 build without libvpx. The complete corresponding source for that build remains available: ffmpeg-8.1.1-source.tar.xz (≈14 MB)

SHA-256: 226c372a2f3166d8d331b99e60273e0ec0ef906db36d7bdeb37946d87c566d66

If you have any trouble obtaining the source, contact us at info@vizloom.com.