10 bit color depth

[shankymkp]

Hello,

I own Optoma 142X projector,which is said to have 1073 million possible colours which i think means it is capable of 10 bit colour depth. Whenever I watch a techquickie  video with white background I can see circles or blocks or patches of different shades of white. One of the videos by Linus explained why could this be happening(can't thank him enough for everything geeky he brings to us). How can I for once, see the videos as the creator intended to make it without any patches or degrading shades over my projector?

[mariushm]

The Techquickie videos are encoded by Youtube at 8 bit ( 256 colors per each element, luminance and chrominances, which are then converted to RGB)

 

You must configure the output of your video card to 10 bit , the projector has to take in the 10bit frames and project them.

Anyway, while the projector says it can do 10bit or whatever that 1 million color means, it also says just "accurate bt709" which is way less than 1 million colors and doesn't say much about how well the projector could actually show 1 mil worth of colors.

 

You could do some tests, try these test videos :  Life Of PI (demo, 290 MB) , Sony 4k HDR: Camp (1.12 GB) , Samsung SUHD Picture Quality Demo Nano_Crystal Display (690MB)

These are encoded with 10bit per color and in enhanced color space (bt2020) which allows for millions of colors and HDR information.

 

Use a movie player like Media Player Classic Home Cinema (MPC-HC), set the output on your video card on 10bit per color if you can, and see if you see the differences between 10bit output and 8bit. You may have to install MadVR renderer  inside MPC-HC and configure it to force the output to 10bit per color.

 

 

[.spider.]

On 4.10.2017 at 11:23 AM, mariushm said:

it also says just "accurate bt709" which is way less than 1 million colors and doesn't say much about how well the projector could actually show 1 mil worth of colors.

rec 709's defines 6 colors its primaries.(7 if you count the white point as color)

 

If you quantize each component Y (luma) Cb (blue difference) Cr (red difference) at 10 bits you'll get 2^30 colors within the color space which is defined by the 6 primaries. 

 

 

 

You are probably having problems with your video level and seeing these macroblocks is not because of the 10 bit projector.