In Japan Blu ray has a wider market penetration than the US. HD DVD never found traction there, and DVD sales are falling like a rock. They purchase almost as many Blu ray discs as we do(they are in region 1 along with the US), and their population is a lot smaller. Sales of Blu ray recorders are jumping three figures year over year. They have a lot of Blu ray accessories that we do have here such as burners, 3D recorders and at least 1000 more Blu ray titles than we have. They also watch an insane amount of television as well. Blu ray is huge in Japan.

The amount of people using mobile devices for video is a lot higher as well. However much like here, it is short video's and television programming because the Japanese also spend an enormous amount of time watching television at home. They use their cell phones and mobile devices more for gaming and texting than for video. Gaming on phones is HUGE in Japan, especially among the young.

They also have a higher penetration of HDTV flat panels than we do(something in the neighborhood of 80%). They use Blu ray recorders, we use Tivo. The PS3 is huge there and so are its peripherals. They have a USB based HD television tuner, and a HD DVR kit for it, we are not likely to get either here.

As far as downloading movies, rentals are growing, but just like everywhere else, digital sell through is under the radar. Much like here, the Japanese like to own physical media for their movies more than a digital file.

Unlike the US, Japan embraces technology quicker, and has more of it. However if you were looking for a downloading and viewing movies silver bullet for mobile devices, you are barking up the wrong tree. Gaming is the rage there, and video is a distant second.