To WDTV developers: Why do you hate so much "RGB High" colorspace?

[pekica]

What is with you, people, that you don't understand: If I want to set the colorspace setting to "RGB High", it means that I want this setting to persist until I set the colorspace to something else, not just until I turn off next time the WDTV Live, or WDTV Live SMP, or my TV.

Please!!!

Thank you!

[TonyPh12345]

Probably because your TV doesn't support it.

If you notice a difference in the contrast when you change modes, your TV doesn't correctly support that colorspace.

[pekica]

Really, the contrast is perfect when I set RGB High, I can see details both in dark and light areas.

The contrast is poor when I leave the default, the picture is pale, black is grey.

My TV is Sony Bravia 40W4500 (10-bit LCD panel).

So, what does it means "your TV doesn't correctly support that colorspace"?

If I can set RGB High, and the picture is perfect when I set "RGB High", please let me decide that I want this "RGB High" setting all the time.

Thank you!

[TonyPh12345]

... if you set the colorspace to HIGH, then your TV should also be setting the COLORSPACE to HIGH.

The way I understand it, (and of course I might be wrong)  What the difference is is how the bit-depth is rendered.

RGB-LOW uses values of like 16 to 240  (I can't remember the exact range)  to represent FULL BLACK to FULL BRIGHT for each of three colors, RGB.

RGB-High uses the values of 0 to 255.

If your TV was supporting RGB Low/High correctly, then:

Low      High      Effect

16       0         Max Black

240      255       Max Bright

What CHANGES is the MIDDLE chromaticity, because the range is wider;  224 steps from black to white versus 256.

So, if your TV is saying via its EDID data that it does't support RGB High, then the WD is going to revert back to RGB LOW to avoid the possibility that it's stuck on a mode the user cannot recover from.   Kinda like a failsafe.

It sounds to me, if you're saying that BLACKs are GREY, that your TV actually isn't supporting the sRGB-Low colorspace correctly.   Hmmmmm.  Weird.

[pekica]

TonyPh12345, I don't have problem with theory. I understand the theory.

My Gen1 WDTV worked perfectly - there was no colorspace setting.

Up to version 1.02... WDTV Live also worked perfectly. The problem appeared after that firmware version.

I just bought WDTV Live SMP, and the problem is there also.

There are several threads on WDTV forums describing the same or similar problem.

I never saw this problem with my Bravia and other HDMI sources (Canon HDV camera, laptops..., DVD players).

So, there must be something about HDMI what WD knows and other don't.

There is no firmware update for my Bravia.

So, would you rather put on the WDTV box warning sign "not compatible with several Bravias and other brands", or just write this one configuration byte in the flash memory of WDTV, making one group of users very happy?

[TonyPh12345]

No doubt...   

The warning could be "If you set MANUAL settings that your TV does not support, you may be unable to restore video.  If this occurs, you should....." whatever...

I'm just explaining why it behaves the way it does, not trying to justify it.  

[pekica]

TonyPh12345, I hope that means that you, finally, agree with me.

[Techflaws]

The last time I've read about color issues was in this thread.

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pekica wrote:

So, would you rather put on the WDTV box warning sign "not compatible with several Bravias and other brands"

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I'd rather have them put a warning sign reading "not compatible with each and all **bleep** that is not spec compliant" on it. Given the complexity of comsumer hardware and sloppyness of implementation sometimes, it's no wonder some hardware combinations don't work as expected.

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pekica wrote:

TonyPh12345, I hope that means that you, finally, agree with me.

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 Which makes a difference how?

[pekica]

My intentions with this post are:

1) To remind the developers that the problem still exists

2) To get some support from community that I am not alone with this problem

The solution is very, very simple, and can't hurt anybody.

Anybody?

[mike27oct]

Are you refering to the HDMI deep-color mode, 8 bit / 12 bit setting in the WDTV, or am I totally confused?