# FFmpeg binary provenance

The FFmpeg executable distributed in Nexus Arc 1.0.20 is provided by the
`imageio-ffmpeg 0.6.0` Windows x64 wheel as:

`_internal/imageio_ffmpeg/binaries/ffmpeg-win-x86_64-v7.1.exe`

Verified binary details:

- version: `7.1-essentials_build-www.gyan.dev`;
- size: `87,638,016` bytes;
- SHA-256: `2CE797A0F88D7F067180338FB227F7B1928EA727BD9A4D7A1D022F7C52AF71A3`;
- effective license declared by the provider: GPL version 3;
- FFmpeg source commit declared by the provider: `b08d7969c5`;
- official binary archive: `ffmpeg-7.1-essentials_build.zip` from the GyanD
  `codexffmpeg` GitHub release tagged `7.1`.

The executable was compared against the `ffmpeg.exe` extracted from the
official 7.1 essentials archive. File size and SHA-256 matched exactly.

The provider's original `README.txt` and `LICENSE` are shipped as:

- `Licenses/FFmpeg-7.1-essentials-README.txt`;
- `Licenses/FFmpeg-7.1-essentials-LICENSE.txt`.

The README records the complete build configuration and external library
versions. The public corresponding-source location remains a release blocker
recorded in `OPEN_SOURCE_SOURCE_CODE.md`. It concerns FFmpeg and its included
third-party libraries only, never the proprietary Nexus Arc source code.