BINK Cinematics are working now! The timing isn't right yet though. Original Doom 3 RoQ cinematics take priority over BINK files if both exist.
You need DLL files from here: http://ffmpeg.zeranoe.com/builds/win32/shared/ffmpeg-20140330-git-c01ddf8-win32-shared.7z
DLL files need to go in your exe folder, or /build/win32/debug/