OpenCV Class VideoCapture doesn't support get/set Videoio.CAP_PROP_AUTO_WB in Windows 10 but Linux (Ubuntu)

[kellanmom]

System information (version)

• OpenCV => 4.5.1 release version
• Operating System / Platform => Windows10 64 Bit
• installed through exe; I didn't compiled
  -->

Detailed description

Steps to reproduce

// java code example
	VideoCapture capture = new VideoCapture();
    capture.open(0);
if (this.capture.isOpened())
{
         System.out.println("get backend name: " + capture.getBackendName());
         System.out.println("Camera Auto White Balance = " +  capture.get(Videoio.CAP_PROP_AUTO_WB));
         
         boolean b = capture.set(Videoio.CAP_PROP_AUTO_WB, 1);
         if (b)
              System.out.println("Successfully turn Auto White Balance ON");
         else
              System.out.println("Failed to turn Auto White Balance ON");
         System.out.println("Camera Auto White Balance = " +  capture.get(Videoio.CAP_PROP_AUTO_WB));

         b = capture.set(Videoio.CAP_PROP_AUTO_WB, 0);
         if (b)
              System.out.println("Successfully turn Auto White Balance OFF");
         else
              System.out.println("Failed to turn Auto White Balance OFF");
         System.out.println("Camera Auto White Balance = " +  capture.get(Videoio.CAP_PROP_AUTO_WB));
    }

Issue submission checklist

Output of above java code would be as below:

get backend name: MSMF
Camera Auto White Balance = -1.0
Failed to turn Auto White Balance ON
Camera Auto White Balance = -1.0
Failed to turn Auto White Balance OFF
Camera Auto White Balance = -1.0

• I posted the question at https://forum.opencv.org/t/class-videocapture-set-method-on-property-videoio-cap-auto-wb/1742/8

• With suggestion, I checked code on below two files
  opencv/cap_dshow.cpp at master · opencv/opencv · GitHub
  opencv/cap_msmf.cpp at master · opencv/opencv · GitHub
  And realized that neither cpp file implemented get/setProperty for CAP_PROP_AUTO_WB

  • OpenCV documentation: https://docs.opencv.org (https://docs.opencv.org/4.5.1/d4/d15/group__videoio__flags__base.html#ggaeb8dd9c89c10a5c63c139bf7c4f5704da762391cbaa101c4015e6a935aa0cfc95)-
    Videoio only stated that CAP_PROP_WHITE_BALANCE_BLUE_U - Currently unsupported.
    and stated that CAP_PROP_AUTO_WB - enable/ disable auto white-balance

I searched below pages and didn't find much regarding to this issue.

• FAQ page: https://github.com/opencv/opencv/wiki/FAQ
• OpenCV forum: https://forum.opencv.org
• OpenCV issue tracker: https://github.com/opencv/opencv/issues?q=is%3Aissue
• Stack Overflow branch: https://stackoverflow.com/questions/tagged/opencv

[heavy_check_mark ] I report the issue, it's not a question
[ heavy_check_mark ] I checked the problem with documentation, FAQ, open issues,
forum.opencv.org, Stack Overflow, etc and have not found solution
[ heavy_check_mark ] I updated to latest OpenCV version and the issue is still there
[ heavy_check_mark ] There is reproducer code and related data files: videos, images, onnx, etc

[alalek]

Almost all videoio properties are optional and may have backend-specific implementation.
Refer to documentation.

[kellanmom]

I didn't build opencv myself but use release version 4.5.1 exe to install on my Windows 10. Many properties work well through backen MSMF, such as brightness, contrast, ... even Auto Exposure on/off. I did look at cap_msmf.cpp and didn't see CAP_PROP_AUTO_WB in either CvCapture_MSMF::getProperty or CvCapture_MSMF::setProperty
I saw you marked this issue as duplicate. May I know the link of the same issue? I would like to track it. Thanks!

[alalek]

This is a duplicate question.

Refer to to documentation page and check this note:

Each backend supports devices properties (cv::VideoCaptureProperties) in a different way or might not support any property at all.