FFmpeg binaries
Before publishing, place these Windows x64 binaries here:
ffmpeg.exeffprobe.exe
Use one consistent, trusted FFmpeg build. The project embeds both files into the published application. At runtime they are extracted under the current user's local application-data directory.
Keep the matching FFmpeg license and source/build information with every distributed release. Which obligations apply depends on how FFmpeg was built (especially whether GPL components are enabled).