FFmpeg - DLLs and source code.
FFmpeg is licensed under the GNU Lesser General Public License (LGPL) version 2.1:
http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html

FFmpeg does not require special installation. Just place *.dll files in the folder of your application, or in any folder included in the PATH environment variable.
When uninstalling your application, simply delete these files.

build_ffmpeg_shared_32 - 32-bit version
build_ffmpeg_shared_64 - 64-bit version

The files "configure param_*.log" contain build configuration.