This is the bik2 video encoder and 3 differents DLLs to use
The "New Engines" is the updated bink2 api for newer games.
The "Old Engines" is a more outdated version of the bink2 api for older games.
Support for all games aren't granted. the "Original" is the retail updated dll without support of the bik2 generated by this encoder, you must patch the bink2w32 to be able to read the bik2 files and you can diff that original dll with the new engines.dll that is already patched and see watch is patched to port to a different version of the bink api.
The "Old Engines" version is tested only in the Steins;Gate Steam Ver.