Different components, different licenses
The ffmpeg.wasm wrapper 0.12.15 is MIT-licensed. The actual single-thread core 0.12.10 is GPL-2.0-or-later and includes GPL and other licensed libraries, including x264 and x265. Fonts retain their OFL licenses. Our integration source is available under GPL-2.0-or-later, without warranty; third-party terms are preserved. Codec copyright licensing does not promise a worldwide patent exemption.
The upstream release tree is commit71aa99d37c02a7b4c435275ca9ef50e612f6efa1 (v12.15, core 0.12.10), including Dockerfile, build scripts and WASM-specific patches. External source archives are provided below. Historical snapshots for the three moving branches are reconstruction candidates, not proven byte-identical build inputs. No bit-reproducibility claim is made.
Large archives are split into numbered parts to meet hosting limits. Download every part, concatenate in order and verify the complete archive SHA256 listed in sources.json. Read the source instructions for an example. Runtime engine parts are independently reconstructed and SHA256-checked before loading.
Upstream source archives
- ffmpegwasm, 71aa99d37c02a7b4c435275ca9ef50e612f6efa1. Download source. Read notices
- ffmpeg, n5.1.4. Download source. Read notices
- x264, 33cac6b77d5b9259c552156013a817ab23119612. Download source. Read notices
- x265, 2bb5520e9596f361bf0ed81b3b8da0d7fd999069. Download source. Read notices
- libvpx, v1.13.1. Download source. Read notices
- lame, 2badea1974ae36cb8312afe99cff1e6b3b5decee. Download source. Read notices
- ogg, v1.3.4. Download source. Read notices
- theora, v1.1.1. Download source. Read notices
- opus, v1.3.1. Download source. Read notices
- vorbis, v1.3.3. Download source. Read notices
- zlib, v1.2.11. Download source. Read notices
- libwebp, v1.3.2. Download source. Read notices
- freetype, VER-2-10-4. Download source. Read notices
- fribidi, v1.0.9. Download source. Read notices
- harfbuzz, 5.2.0. Download part1 Download part2. Read notices
- libass, 0.15.0. Download source. Read notices
- zimg, release-3.0.5. Download source. Read notices
- zimg-googletest, 703bd9caab50b139428cea1aaff9974ebee5742e. Download source. Read notices
- emscripten, 3.1.40. Download part1 Download part2. Read notices
- sdl2, release-2.24.2. Download source. Read notices
Font notices
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