This directory contains the exact upstream source archives and the build inputs used for this NextNote FFmpeg release. The package was built by scripts/build.ps1 from the pinned inputs in sources/config/dependencies.lock.json. Use sources/README.md and PROJECT_PLAN.md in the build repository for the Windows MSYS2 prerequisite and full rebuild procedure. Local build scripts, tests, configuration, and the dependency lock are included under this sources directory.