Brightness problem (at least for me) solved!

siGGi_ · 2008-11-13, 20:50

Hi guys,

I have recently installed MP and had terrible problems concerning the brightness of movies. The problem had to do with VMR9 Renderer and SD colour levels (BT.601) where black was 16 instead of 0, white 235 instead of 255. For ATI graphics card owners, I have found a registry hack that solves the problem.

Go to: HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Video\{GUID}\0000

where GUID is the long string in which the folder 0000 contains a lot of registry entries.

Add the string (or what is it called in English) "UseBT601CSC" and set it to "1".

Reboot your system afterwards.

For a more detailed description, have a look at:
AVS Forum - View Single Post - ATI Radeon HD 2X00 (2400,2600,2900) series owners thread

I hope this helps you. It worked for me!

Regards,
siGGi_

Spragleknas · 2008-11-14, 22:54

Thank you for sharing

(Although these ATi HD registry hacks has been posted in this forum for many months now - most of the hacks are now no longer needed)

montecristo · 2008-11-15, 12:16

can somebody tell me how to do this for nvidia card?

i would like to change this as well.
my black is not black enough.

Montecristo

siGGi_ · 2008-11-15, 12:19

I believe to have read, while searching for a solution for my problem with ATI, that there is a similar hack for nVidia. I will have a look if I can find something and report back.

Edit: Have a look at http://forum.inmatrix.com/lofiversio...php?t5661.html. I hope this does the trick, but it seems to only apply to DVI output.

montecristo · 2008-11-15, 12:58

ok, thanks.

i will check that.
but i use HDMI output.
i'll see if it works or not.

Montecristo

JackTramiel · 2008-11-15, 23:17

Bei nVidia Karten kann man den Output-Level im Grafikkartenmenü einstellen. Ein Registryfix sollte nicht nötig sein.
Die wortgenau Einstellung müßte ich nachschauen (Sitz grad an nem iBook), aber bei mir läufts 1a so.

2008-11-13, 20:50	#1 (permalink)
siGGi_ Portal Member Join Date: Sep 2008 Posts: 8 Thanks: 0 Thanked 0 Times in 0 Posts	Brightness problem (at least for me) solved! Hi guys, I have recently installed MP and had terrible problems concerning the brightness of movies. The problem had to do with VMR9 Renderer and SD colour levels (BT.601) where black was 16 instead of 0, white 235 instead of 255. For ATI graphics card owners, I have found a registry hack that solves the problem. Go to: HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Video\{GUID}\0000 where GUID is the long string in which the folder 0000 contains a lot of registry entries. Add the string (or what is it called in English) "UseBT601CSC" and set it to "1". Reboot your system afterwards. For a more detailed description, have a look at: AVS Forum - View Single Post - ATI Radeon HD 2X00 (2400,2600,2900) series owners thread I hope this helps you. It worked for me! Regards, siGGi_

2008-11-14, 22:54	#2 (permalink)
Spragleknas Super Moderator Join Date: Dec 2005 Location: Rogaland Age: 34 Posts: 5,866 Thanks: 520 Thanked 272 Times in 215 Posts Country: My System	Thank you for sharing (Although these ATi HD registry hacks has been posted in this forum for many months now - most of the hacks are now no longer needed) __________________ How to gather log files How to show System Specs How to start support/bug thread CONTRIBUTE TO MP!!!

2008-11-15, 12:19	#4 (permalink)
siGGi_ Portal Member Join Date: Sep 2008 Posts: 8 Thanks: 0 Thanked 0 Times in 0 Posts	I believe to have read, while searching for a solution for my problem with ATI, that there is a similar hack for nVidia. I will have a look if I can find something and report back. Edit: Have a look at http://forum.inmatrix.com/lofiversio...php?t5661.html. I hope this does the trick, but it seems to only apply to DVI output. Last edited by siGGi_; 2008-11-15 at 12:33..

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2008-11-15, 12:16	#3 (permalink)
montecristo Portal Member Join Date: May 2008 Posts: 88 Thanks: 2 Thanked 1 Time in 1 Post Country:	can somebody tell me how to do this for nvidia card? i would like to change this as well. my black is not black enough. Montecristo

2008-11-15, 12:58	#5 (permalink)
montecristo Portal Member Join Date: May 2008 Posts: 88 Thanks: 2 Thanked 1 Time in 1 Post Country:	ok, thanks. i will check that. but i use HDMI output. i'll see if it works or not. Montecristo

2008-11-15, 23:17	#6 (permalink)
JackTramiel MP Donator Join Date: Nov 2006 Age: 31 Posts: 678 Thanks: 62 Thanked 10 Times in 10 Posts Country: My System	Bei nVidia Karten kann man den Output-Level im Grafikkartenmenü einstellen. Ein Registryfix sollte nicht nötig sein. Die wortgenau Einstellung müßte ich nachschauen (Sitz grad an nem iBook), aber bei mir läufts 1a so.