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Discussion Starter · #1 ·
Hi all,


not sure if this this is the right place but here goes.


when I output a 0-255 RGB (via windows NOT a media player) from my laptop via HDMI to my TV the signal is compressed to 16-235 (to prevent clipping) however since I am planning on using my laptop as a pattern generator (to calibrate my display) I need blacker then black (0-15) and whiter then white (236-255)


In CCC it does not matter what I do, 1 is compressed to16 and 255 to 235. If I play a file in VLC its ok and I can see btb and wtw

basically I want my laptop to output 0-255 from a windows window


Im using Windows 7 and CCC for the graphics card.


Thank you for any help
 

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A little bit more information about your system might help.. Processor and GPU, for example.
 

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I don't use a Radeon or AMD GPU so am not familiar with the CCC set-up. Others here are but I just thought that when they tune into this thread they will have more information to help you out.
 

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Quote:
Originally Posted by visca blaugrana  /t/1469094/0-255-out-from-windows#post_23224886


when I output a 0-255 RGB (via windows NOT a media player) from my laptop via HDMI to my TV the signal is compressed to 16-235...
By the display? Make sure your display is set to 0-255 as well.
 

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Discussion Starter · #7 ·
My display is set to 16-235.


what I'm looking to do is:

output 0-255 from laptop my displays is then set to clip below 16 and above 235. My setup with my blu ray player does just that.

right now my laptop maps 1 to 16 so the entire range get compressed so example 16 gets to bright.


hope I make sense:)
 

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It's a tough business. You need pick the right configuration on video card driver so that it won't remap the outputs.. Then, you need to pick the right player that correctly outputs it. For example, VLC player outputs differently if you configure a different render in its options. WMP always output 0-255 but WMC by default outputs 16-235. Windows desktop is always 0-255.


If your purpose is to calibrate your HTPC on your display, make sure you get your playback software configured properly first.
 

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Did you adjust "Dynamic Range" in CCC > Video?
 

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Discussion Starter · #10 ·
first thank you for all the answers


I think maybe a bit more information is required, what I am trying o do is to use my laptop as a pattern generator for CalMAN's integrated test patterns for a 3DLUT for an eecolor box, this require around 4000 different patterns, so not practical to do it of a disk as I normally have done. the next best thing is then a pattern generator (which is out of my range), and the next next best thing is a laptop (configured correctly
)


CalMAN's patterns are displayed in a windows window, therefor no video player and no vide render, just a popup with pre-configured RGB values in the range 16-235, if required or desired you can select the range to be 16-255, to calibrate the whiter then white.


since as you say windows will always output 0-255 the issue must be in my video card driver, I assume this is controlled by CCC?


If I could get you to have a quick look in the following post http://www.avsforum.com/t/1462960/eecolor-processor-calman-3d-luts/150#post_23140116 to see what settings I have used in CCC.

I have additional tried all combinations of Pixel Color Format and dynamic range.


I am on the market for a new laptop, or if anyone know of an external video card I can use I would love some sugestions
 

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Your graphic card is set to unlimited and your display is set to limited, your desktop is wrong because your display ignores the extra informations in the unlimited stream.


Set your display to unlimited and then desktop is ok. If it is not possible, then set your graphic card output to limited, but this could add banding.
 

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Discussion Starter · #12 ·
My display does not as such ignore 1-15 and 236-255 I have just set contrast and brightness so it clip these information's. I do not want to change settings on the TV as I use my blu ray player as my source the laptop is just for pattern generator.


simplified I want the output of my laptop to match the output of my blu ray player.
 

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My HDTV has 1 HDMI input & I use an external switcher. My standalone Blu-ray player will display blacker-than-black on the TV. I made the HTPC match the Blu-ray player.


Take a look at this thread.
http://www.avsforum.com/t/1463611/unable-to-configure-dynamic-range-hd-6450#post_23088878


I did the WMC registry hack to change WMC so it uses 0-255. I set CCC to RBG Limited Pixel Format and checked "Enforce Smooth Video Playback". I could use one of the other Limited Color Pixel Formats but somehow just ended up using what I did.


The HTPC will output B-T-B whether I use the WMC test image or a DVD calibration disc. However I do have the TV calibrated to not display B-T-B.
 
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