Can i record video in Japan?

Ok so i'm really hoping work give me the time off so i can come to Japan in August 2015.

I just want to know if i'm allowed to record some footage
i.e - When i get off the plain, some of thr sights and activites i do.

But ive done told i need a permit? Is this true?

Thanks in advance

It depends on the location, your purpose and on the size of the camera. If it is for the personal purpose of recording your private sightseeing, then a permit is generally not required and you can film wherever there are no signs prohibiting photography, keeping general manners in mind, e.g. not filming strangers in a blatant way.

If the purpose is of commercial nature, you will need a permit in most privately own places.

Likewise, if you are filming with a large-sized camera (larger than the usual amateur and semi-professional cameras), a permit is required in a lot of places, even some public parks.

Thanks for the reply Uji.

Ive got a really small hand held camera, it's a 'Contour Roam HD' it'll fit in your pocket.
The purpose is for personal use, i just want to record my visit, i.e when im flying into Japan, landing, night time lights, a couple of activities (if i play some football or something), take a few pictures of the hotel we stay in stuff like that, nothing that will bother anyone else :)

Just looking to make the most of my trip as ive always wanted to go there

Just make normal use of your camera and use common sense.