Translation of video - see down here.
Photos: http://goo.gl/k4EMgi
Genji Shimizu
(artist name Hokujoh)
Full member of the Japan Arts Crafts Association
Master of traditional Crafts

http://www.tokoname.or.jp/teapot/make...

Translation from gorou some - thank you
He said
05:48 Is it interesting. next,I make a handle and spout
07:15 This is a handle.
10:02 next,top
12:05 Roughly good at this
12:08 I think it interesting if you look at the contents and cut
12:21 Basically good teapot is easy to hold,put out to the last tea,Good looks and light.
12:57 put out to the last tea
12:39 We are only tilt and tapping the teapot in order to serve tea to the last.
12:52 Finally themselves choose the teapot, in the color and shape of preference
13:02 Hey I'm sorry. Thank you.
13:23 It is made thin to make the light teapot
13:26 Since it becomes dented when you had a teapot, bottom and around shave spatula leaving a thickness.
13:33 Other places have left a trail of line that stretched clay.　And I bake
13:43 Feeling is a feeling like touching the skin of people when using the teapot.
13:47 Teapot has a hard feel made by cutting the surface with a tool.
13:51 Teapot becomes soft feel when you thin by using the rotary table.

Translation from comicker9999 - thank you
I 'm a Japanese, I explain words that he said at the end.
"I gonna tell you how to choose Japanese tea pots(kyusu) of good quality.
First, being easy to hold it,and good appearance,and being easy to pour tea.
A color or form and the design depend on you."