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  4. How to connect Ip camera using openCV library for the Qt version 5.15.2..Im trying to display the Ip camera output in QML window
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How to connect Ip camera using openCV library for the Qt version 5.15.2..Im trying to display the Ip camera output in QML window

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  • V Vijaykarthikeyan

    Screenshot 2023-06-19 175827.png

    jsulmJ Offline
    jsulmJ Offline
    jsulm
    Lifetime Qt Champion
    wrote on last edited by
    #2

    @Vijaykarthikeyan You're not linking OepnCV library to your application

    https://forum.qt.io/topic/113070/qt-code-of-conduct

    V 1 Reply Last reply
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    • jsulmJ jsulm

      @Vijaykarthikeyan You're not linking OepnCV library to your application

      V Offline
      V Offline
      Vijaykarthikeyan
      wrote on last edited by
      #3

      @jsulm Sir,can you please tell me how to do it? Im trying this task for the past one week.I came to know that Qt multimedia wont support this and mediaplayer wont accept rtsp link..There is no webEngine and webview module in 5.15.2..thats why I went with OpenCV..how to link it sir..

      jsulmJ 1 Reply Last reply
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      • V Vijaykarthikeyan

        @jsulm Sir,can you please tell me how to do it? Im trying this task for the past one week.I came to know that Qt multimedia wont support this and mediaplayer wont accept rtsp link..There is no webEngine and webview module in 5.15.2..thats why I went with OpenCV..how to link it sir..

        jsulmJ Offline
        jsulmJ Offline
        jsulm
        Lifetime Qt Champion
        wrote on last edited by
        #4

        @Vijaykarthikeyan Using QtCreator: https://doc.qt.io/qtcreator/creator-project-qmake-libraries.html
        Manually editing pro file: https://doc.qt.io/qt-6/qmake-variable-reference.html#libs

        https://forum.qt.io/topic/113070/qt-code-of-conduct

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        • jsulmJ jsulm

          @Vijaykarthikeyan Using QtCreator: https://doc.qt.io/qtcreator/creator-project-qmake-libraries.html
          Manually editing pro file: https://doc.qt.io/qt-6/qmake-variable-reference.html#libs

          V Offline
          V Offline
          Vijaykarthikeyan
          wrote on last edited by
          #5

          @jsulm Sir,I've included two library files which are only available in the downloaded file directoryScreenshot 2023-06-19 184808.png

          jsulmJ V 2 Replies Last reply
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          • V Vijaykarthikeyan

            @jsulm Sir,I've included two library files which are only available in the downloaded file directoryScreenshot 2023-06-19 184808.png

            jsulmJ Offline
            jsulmJ Offline
            jsulm
            Lifetime Qt Champion
            wrote on last edited by
            #6

            @Vijaykarthikeyan Please post text not pictures! Please post all errors, especially the first one.
            What compiler do you use and what compiler was used to build OpenCV? I'm asking because MSVC++ and MinGW are not compatible.

            https://forum.qt.io/topic/113070/qt-code-of-conduct

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            • V Vijaykarthikeyan

              @jsulm Sir,I've included two library files which are only available in the downloaded file directoryScreenshot 2023-06-19 184808.png

              V Offline
              V Offline
              Vijaykarthikeyan
              wrote on last edited by
              #7

              @Vijaykarthikeyan Sorry sir..Im using MingGW 8.1.0 32 and 64 bit compiler Sir.There is no error until I put the statement VideoCapture cap;

              jsulmJ 1 Reply Last reply
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              • V Vijaykarthikeyan

                @Vijaykarthikeyan Sorry sir..Im using MingGW 8.1.0 32 and 64 bit compiler Sir.There is no error until I put the statement VideoCapture cap;

                jsulmJ Offline
                jsulmJ Offline
                jsulm
                Lifetime Qt Champion
                wrote on last edited by
                #8

                @Vijaykarthikeyan You did not answer all my questions.
                Please build and post whole build log here, so that we can see what happens...

                https://forum.qt.io/topic/113070/qt-code-of-conduct

                V 1 Reply Last reply
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                • jsulmJ jsulm

                  @Vijaykarthikeyan You did not answer all my questions.
                  Please build and post whole build log here, so that we can see what happens...

                  V Offline
                  V Offline
                  Vijaykarthikeyan
                  wrote on last edited by
                  #9

                  @jsulm Screenshot 2023-06-20 105831.png

                  jsulmJ 1 Reply Last reply
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                  • V Vijaykarthikeyan

                    @jsulm Screenshot 2023-06-20 105831.png

                    jsulmJ Offline
                    jsulmJ Offline
                    jsulm
                    Lifetime Qt Champion
                    wrote on last edited by
                    #10

                    @Vijaykarthikeyan What compiler was used to build OpenCV?
                    And I'm not sure whether the OpenCV library you're linking is the only one you need. Check what other libraries are there and which you need.

                    https://forum.qt.io/topic/113070/qt-code-of-conduct

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                    • V Offline
                      V Offline
                      Vijaykarthikeyan
                      wrote on last edited by Vijaykarthikeyan
                      #11

                      @jsulm These are my compilers sir. Im new to Qt, Sir. The other libraries which could be used for this purposes are VLClib, Gstreamer,live55..My only problem is around linking these external libraries which ends up in inability to use those functionsScreenshot 2023-06-20 111434.png

                      jsulmJ 1 Reply Last reply
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                      • V Vijaykarthikeyan

                        @jsulm These are my compilers sir. Im new to Qt, Sir. The other libraries which could be used for this purposes are VLClib, Gstreamer,live55..My only problem is around linking these external libraries which ends up in inability to use those functionsScreenshot 2023-06-20 111434.png

                        jsulmJ Offline
                        jsulmJ Offline
                        jsulm
                        Lifetime Qt Champion
                        wrote on last edited by
                        #12

                        @Vijaykarthikeyan I asked about the compiler which was used to compile OpenCV and I also explained why I'm asking this. Up to you to ignore that or not...
                        And what about "And I'm not sure whether the OpenCV library you're linking is the only one you need. Check what other libraries are there and which you need."? Are you going to do something about it or just ignore?

                        https://forum.qt.io/topic/113070/qt-code-of-conduct

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                        • jsulmJ jsulm

                          @Vijaykarthikeyan I asked about the compiler which was used to compile OpenCV and I also explained why I'm asking this. Up to you to ignore that or not...
                          And what about "And I'm not sure whether the OpenCV library you're linking is the only one you need. Check what other libraries are there and which you need."? Are you going to do something about it or just ignore?

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                          Vijaykarthikeyan
                          wrote on last edited by
                          #13

                          @jsulm Yes Sir I understand.. OpenCV is the 3rd part library for which the compiler used is not well known. Other alternative libraries are live555 or GStreamer or VLClib..I could able to do that function sir but im stuck with the linking

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                            Vijaykarthikeyan
                            wrote on last edited by
                            #14
                            This post is deleted!
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                            • jsulmJ jsulm referenced this topic on
                            • SGaistS Offline
                              SGaistS Offline
                              SGaist
                              Lifetime Qt Champion
                              wrote on last edited by
                              #15

                              The OpenCV documentation seems to only mention visual studio for the pre-built binaries so you will likely have to build it yourself to use it with MinGW.

                              Interested in AI ? www.idiap.ch
                              Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                              V 1 Reply Last reply
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                              • SGaistS SGaist

                                The OpenCV documentation seems to only mention visual studio for the pre-built binaries so you will likely have to build it yourself to use it with MinGW.

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                                Vijaykarthikeyan
                                wrote on last edited by Vijaykarthikeyan
                                #16

                                @SGaist Thank you Sir.. With your words, I have finally solved the linking problem..Actually what the problem is I have MINGW compiler but OPenCV library is for MSVC.. I have downloaded the correct version for MINGW compiler..Now,I want it to show it in QML window

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