Is HIGH_BIT_DEPTH 10 or 16 bit?

[djcj]

I'm using Linux and when I run ccmake it says "HIGH_BIT_DEPTH: Store pixels as 16bit values". But when I encode a video it kinda mentions 16 and 10 bit:

x265 [info]: HEVC encoder version 0.9+114-c630b0b393ee
x265 [info]: build info [Linux][GCC 4.8.1][64 bit] 16bpp
x265 [info]: using cpu capabilities: MMX2 SSE2Fast LZCNT
x265 [info]: WPP streams / pool / frames         : 2 / 2 / 1
x265 [info]: Main10 profile, Level-2 (Main tier)
x265 [info]: Internal bit depth                  : 10

So what bit depth is it exactly?

[Steve Borho]

it uses 16 bits per pixel for storage, and each pixel sample is 10 bits.