Unmodified @ffmpeg/core 0.12.10 (FFmpeg 5.1.4). GNU GPL version 2 or later. The wrapper is MIT; the linked core retains its own licenses.
GNU GPL version 2 · Source identities and checksums · Build instructions
Each source archive retains the upstream copyright/license files. ffmpeg.wasm contains the Dockerfile, Makefile, build scripts and JavaScript/C bindings. The Emscripten and SDL2 sources used by the specified toolchain are supplied as well. No modifications to the distributed core are made.