Movie Clips Extra has posted two ‘Behind the Scenes Clips’ for 47 Ronin on youtube. The first shows forrest footage of the horse riding among other things. The clip is narrated by stunt coordinator Gary Powell and visual effects coordinator Christian Manz. It is here.
The second clip shows footage from Lord Kira’s castle. It is narrated by co-screenwriter Chris Morgan, stunt coordinator Gary Powell and several of the actors. It is here.