Video processing support requires FFMPEG and FFPROBE binaries, files must be present in your output folder or the destinations configured in the appsettings.json
https://ffbinaries.com/downloads
https://github.com/ffbinaries/ffbinaries-prebuilt/releases/download/v6.1/ffmpeg-6.1-win-64.zip
https://github.com/ffbinaries/ffbinaries-prebuilt/releases/download/v6.1/ffprobe-6.1-win-64.zip