Difference between revisions of "Cx88 Hue Saturation Brightness"

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I've seen quite a few posts on the video4linux list from people complaining that they have to either set their HUE to 0% or 100% in order to get realistic colors on their cx88 cards. In an effort to help in solving this problem, I am trying to compile a list of the various cards and the "best" settings that people are using to get a decent picture. Based on the contents of this list, hopefully a decision will be made as to how to deal with this problem once and for all.
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{{Note|This problem was corrected in the source code of the cx88 driver module as of Wed Jun 29 2005}}
 +
 
 +
==Original Bug==
 +
I've seen quite a few posts on the video4linux list from people complaining that they have to either set their HUE to 0% or 100% in order to get realistic colors on their [[cx88 devices (cx2388x)|cx88 cards]]. In an effort to help in solving this problem, I am trying to compile a list of the various cards and the "best" settings that people are using to get a decent picture. Based on the contents of this list, hopefully a decision will be made as to how to deal with this problem once and for all.
 +
 
 +
Please add to this list the settings that you use for your card. Even if your card works correctly out-of-the-box, I'd still like to hear about it. I'm trying to get as close to an all-inclusive list as possible, so please submit your settings. I will be posting the compiled list at http://techsounds.org/linux/cx88/bestsettings/
  
Please respond to this email with the settings that you use for your card. Even if your card works correctly out-of-the-box, I'd still like to hear about it. I'm trying to get as close to an all-inclusive list as possible, so please respond in this thread with your settings. I will be posting the compiled list at http://techsounds.org/linux/cx88/bestsettings/ after enough people have responded. Don't bother going to the web site right away -there's nothing there yet!
 
 
Please provide the following:
 
Please provide the following:
  
  1. card name, card number, tuner number.
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# card name, card number, tuner name, tuner number.
  2. (optional) subsystem ID -- This could be handy if you're unsure of your card name/number...
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# system ID and subsystem ID (you can find this in lspci -vn)
  (you can find this in lspci -vn )
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# video standard used.
  3. COLOR setting.
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# HUE setting.
  4. HUE setting.
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# CONTRAST setting.
  5. CONTRAST setting.
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# BRIGHTNESS setting.
  6. BRIGHTNESS setting.
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# COLOR / SATURATION setting.
  7. (optional) Any comments that you may have, i.e. applications these settings worked well under,  
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# (optional) Any comments that you may have, i.e. applications these settings worked well under, kernel / v4l version, etc.
  kernel / v4l version, etc.
+
  
 
Thank you  
 
Thank you  
 
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==User Submitals==
---------------------------------------------------------------------------------------------
+
  
 
{| border="1"
 
{| border="1"
 
|Card: ||  
 
|Card: ||  
| SubSystem: || Tuner:  ||
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| System ID: || SubSystem: || Tuner:  ||
| color || hue || saturation|| brightness||
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| Video Standard:  ||
 +
| hue || contrast|| brightness||  color / saturation ||
 
|-
 
|-
|(1) Hauppage WinTV 34xxx ||  
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|(1) Hauppauge WinTV 34xxx ||  
| 0070:3401 || (38) PHILIPS_FM1216ME_MK3 ||
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| 14f1:8800 || 0070:3401 || (38) PHILIPS FM1216ME MK3 ||
| 82% ||  100% || 18%|| 58%||
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| PAL-I  ||
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|  100% || 18%|| 58%|| 82% ||
 
|-
 
|-
 
|(9) Leadtek PVR 2000 ||
 
|(9) Leadtek PVR 2000 ||
|107d:6620 || (38) PHILIPS_FM1216ME_MK3 ||
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|  || 107d:6620 || (38) PHILIPS FM1216ME MK3 ||
| 50% ||0% || 25% ||60% ||
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|   ||
 +
|0% || 25% ||60% || 50% ||
 
|I use a lcd display, which may explain the need for more brightness
 
|I use a lcd display, which may explain the need for more brightness
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|-
 +
|(12) ASUS PVR-416 ||
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| 14f1:8800 || 1043:4823 || (43) PHILIPS FM1236 MK3  ||
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| NTSC  ||
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|  0% || 33%|| 50%|| 50% ||
 +
|hue: - same results from both 0% and 100%
 
|-
 
|-
 
|(22) pcHDTV HD3000 HDTV ||
 
|(22) pcHDTV HD3000 HDTV ||
|7063:3000 ||(52) Thomson DDT 7610 (ATSC/NTSC) ||
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| 14f1:8800 ||  7063:3000 ||(52) Thomson DDT 7610 (ATSC/NTSC) ||
| 48% || 100% || 21% || 75% ||
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| NTSC  ||
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| 100% || 21% || 75% || 48% ||
 
|hue: 100% (0% looks the same to me; 50% has green-blue swapped)
 
|hue: 100% (0% looks the same to me; 50% has green-blue swapped)
 
|-
 
|-
|(28) DViCO FusionHDTV3 Gold-T (60) ||  
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|(25) Digital-Logic MEC ||
| 18ac:d820 || Thomson DDT 7611 (ATSC/NTSC)  ||
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|  || 14f1:0342 ||(38) PHILIPS FM1216ME MK3 ||
| 50% ||  0% || 33%|| 50%||
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|  ||
 +
| 0% || 25% || 60% || 50% ||
 +
|I use a lcd display, which may explain the need for more brightness
 +
|-
 +
|(27) Pixelview PlayTV Pro Ultra ||
 +
| 14f1:8800 || 0000:0000 || (59) Ymec Tvision TNF-5533/MF ||
 +
| PAL/M ||
 +
| 0% or 100% || 63% || 25% || 65% ||
 +
| Sometimes, low intensity colors become B&W
 +
|-
 +
|(28) DViCO FusionHDTV3 Gold-T ||  
 +
| 14f1:8800 || 18ac:d820 || (60) Thomson DDT 7611 (ATSC/NTSC)  ||
 +
| NTSC  ||
 +
|  0% || 33%|| 50%|| 50% ||
 +
|hue: - same results from both 0% and 100%
 
|}
 
|}
 +
 +
==Problem Fixed==
 +
We have determined that the hue problem is common to all [[cx88 devices (cx2388x)|cx88 boards]], since nobody has reported correct hue functionality out-of-the-box.  This problem has been corrected in the cx88 driver as of the CVS commit on Wed Jun 29 16:28:17 2005 UTC. '''Note''': If you had previously set your HUE setting to either 0% or 100% in order to remedy the original bug, you will notice that the hue is all messed up again after fetching the latest CVS.  Please correct this on your system  by setting the HUE back to 50% to accommodate the fix.  If, however, this change produces unexpected results with your setup, please let us know.

Latest revision as of 20:15, 7 December 2008

Note: This problem was corrected in the source code of the cx88 driver module as of Wed Jun 29 2005

Original Bug

I've seen quite a few posts on the video4linux list from people complaining that they have to either set their HUE to 0% or 100% in order to get realistic colors on their cx88 cards. In an effort to help in solving this problem, I am trying to compile a list of the various cards and the "best" settings that people are using to get a decent picture. Based on the contents of this list, hopefully a decision will be made as to how to deal with this problem once and for all.

Please add to this list the settings that you use for your card. Even if your card works correctly out-of-the-box, I'd still like to hear about it. I'm trying to get as close to an all-inclusive list as possible, so please submit your settings. I will be posting the compiled list at http://techsounds.org/linux/cx88/bestsettings/

Please provide the following:

  1. card name, card number, tuner name, tuner number.
  2. system ID and subsystem ID (you can find this in lspci -vn)
  3. video standard used.
  4. HUE setting.
  5. CONTRAST setting.
  6. BRIGHTNESS setting.
  7. COLOR / SATURATION setting.
  8. (optional) Any comments that you may have, i.e. applications these settings worked well under, kernel / v4l version, etc.

Thank you

User Submitals

Card: System ID: SubSystem: Tuner: Video Standard: hue contrast brightness color / saturation
(1) Hauppauge WinTV 34xxx 14f1:8800 0070:3401 (38) PHILIPS FM1216ME MK3 PAL-I 100% 18% 58% 82%
(9) Leadtek PVR 2000 107d:6620 (38) PHILIPS FM1216ME MK3 0% 25% 60% 50% I use a lcd display, which may explain the need for more brightness
(12) ASUS PVR-416 14f1:8800 1043:4823 (43) PHILIPS FM1236 MK3 NTSC 0% 33% 50% 50% hue: - same results from both 0% and 100%
(22) pcHDTV HD3000 HDTV 14f1:8800 7063:3000 (52) Thomson DDT 7610 (ATSC/NTSC) NTSC 100% 21% 75% 48% hue: 100% (0% looks the same to me; 50% has green-blue swapped)
(25) Digital-Logic MEC 14f1:0342 (38) PHILIPS FM1216ME MK3 0% 25% 60% 50% I use a lcd display, which may explain the need for more brightness
(27) Pixelview PlayTV Pro Ultra 14f1:8800 0000:0000 (59) Ymec Tvision TNF-5533/MF PAL/M 0% or 100% 63% 25% 65% Sometimes, low intensity colors become B&W
(28) DViCO FusionHDTV3 Gold-T 14f1:8800 18ac:d820 (60) Thomson DDT 7611 (ATSC/NTSC) NTSC 0% 33% 50% 50% hue: - same results from both 0% and 100%

Problem Fixed

We have determined that the hue problem is common to all cx88 boards, since nobody has reported correct hue functionality out-of-the-box. This problem has been corrected in the cx88 driver as of the CVS commit on Wed Jun 29 16:28:17 2005 UTC. Note: If you had previously set your HUE setting to either 0% or 100% in order to remedy the original bug, you will notice that the hue is all messed up again after fetching the latest CVS. Please correct this on your system by setting the HUE back to 50% to accommodate the fix. If, however, this change produces unexpected results with your setup, please let us know.