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QtWS25 Last Chance

Media player not working for multiple videos

Scheduled Pinned Locked Moved Solved General and Desktop
qt 5.5videosurfacemedia playergraphicview
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  • J jsulm
    3 Jul 2018, 06:54

    @Kinesis You should think about the code you're writing and you should read what I'm writing more carefully. To be honest I'm tired of writing code for you and then see that you're not trying it but doing something else. The code you posted now is NOT what I suggested (again).

    void MainWindow::play()
    {
        QMediaPlayer *mediaPlayer = player[1];
    

    Do you really think this code can work correctly? You always try to use SECOND player! How is it going to work?!
    I post here my code once more, but for the last time:

    for(const QFileInfo & finfo: directory.entryInfoList()){
        QMediaPlayer *mediaPlayer = new QMediaPlayer(); // DO NOT USE GLOBAL mediaPlayer!
        mediaPlayer->setMedia(QUrl::fromLocalFile(finfo.absoluteFilePath()));
    ...
        connect(m_playButton, &QAbstractButton::clicked, [mediaPlayer]() {
            switch (mediaPlayer->state()) {
            case QMediaPlayer::PlayingState:
                mediaPlayer->pause();
                break;
            default:
                mediaPlayer->play();
                break;
        }
        });
    ...
        mediaPlayer->setVideoOutput(m_videoItem);
        m_mediaPlayer.append(mediaPlayer);
    
    K Offline
    K Offline
    Kinesis
    wrote on 3 Jul 2018, 07:18 last edited by
    #23

    @jsulm
    I got it now . Sorry for wasting your time . Now I can play both videos . Do I need to replace the button state change into loop? Because button state(Icon) is not changing correctly and linking with other media players.

    J 1 Reply Last reply 3 Jul 2018, 07:41
    0
    • K Kinesis
      3 Jul 2018, 07:18

      @jsulm
      I got it now . Sorry for wasting your time . Now I can play both videos . Do I need to replace the button state change into loop? Because button state(Icon) is not changing correctly and linking with other media players.

      J Online
      J Online
      jsulm
      Lifetime Qt Champion
      wrote on 3 Jul 2018, 07:41 last edited by
      #24

      @Kinesis You need to change all your other slots for mediaPlayer in the same way as play():

      connect(mediaPlayer, &QMediaPlayer::stateChanged, [m_playButton, this](QMediaPlayer::State state) {
          switch(state) {
          case QMediaPlayer::PlayingState:
              m_playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPause));
              break;
          default:
              m_playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay));
              break;
          }
      });
      

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

      K 1 Reply Last reply 3 Jul 2018, 07:50
      1
      • J jsulm
        3 Jul 2018, 07:41

        @Kinesis You need to change all your other slots for mediaPlayer in the same way as play():

        connect(mediaPlayer, &QMediaPlayer::stateChanged, [m_playButton, this](QMediaPlayer::State state) {
            switch(state) {
            case QMediaPlayer::PlayingState:
                m_playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPause));
                break;
            default:
                m_playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay));
                break;
            }
        });
        
        K Offline
        K Offline
        Kinesis
        wrote on 3 Jul 2018, 07:50 last edited by
        #25

        @jsulm
        I got a lambda issue for "m_playButton" . The message is " m_play Button in capture list does not name a variable.

        J A 2 Replies Last reply 3 Jul 2018, 07:54
        0
        • K Kinesis
          3 Jul 2018, 07:50

          @jsulm
          I got a lambda issue for "m_playButton" . The message is " m_play Button in capture list does not name a variable.

          J Online
          J Online
          jsulm
          Lifetime Qt Champion
          wrote on 3 Jul 2018, 07:54 last edited by jsulm 7 Mar 2018, 07:55
          #26

          @Kinesis Please show your code...
          You need to put the code I shown AFTER you created m_playButton.

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

          K 1 Reply Last reply 3 Jul 2018, 08:17
          0
          • K Kinesis
            3 Jul 2018, 07:50

            @jsulm
            I got a lambda issue for "m_playButton" . The message is " m_play Button in capture list does not name a variable.

            A Offline
            A Offline
            aha_1980
            Lifetime Qt Champion
            wrote on 3 Jul 2018, 07:57 last edited by
            #27

            @Kinesis I will tell you my insights from reading this thread: you should really take a C++ book and start with simple examples.

            you are lacking simple programming knowledge, sorry. most of your problems are not related to Qt.

            So please, start learning C++. it will help you a lot.

            Qt has to stay free or it will die.

            K 1 Reply Last reply 3 Jul 2018, 08:01
            0
            • A aha_1980
              3 Jul 2018, 07:57

              @Kinesis I will tell you my insights from reading this thread: you should really take a C++ book and start with simple examples.

              you are lacking simple programming knowledge, sorry. most of your problems are not related to Qt.

              So please, start learning C++. it will help you a lot.

              K Offline
              K Offline
              Kinesis
              wrote on 3 Jul 2018, 08:01 last edited by
              #28

              @aha_1980
              Thanks for your suggestion . I am learning c++ now . I also like to try writing UI that's why I am approaching QT .

              1 Reply Last reply
              0
              • J jsulm
                3 Jul 2018, 07:54

                @Kinesis Please show your code...
                You need to put the code I shown AFTER you created m_playButton.

                K Offline
                K Offline
                Kinesis
                wrote on 3 Jul 2018, 08:17 last edited by
                #29

                @jsulm
                Here is the code

                MainWindow::MainWindow(QWidget *parent) :
                    QMainWindow(parent),
                    ui(new Ui::MainWindow)
                {
                    ui->setupUi(this);
                    
                    ui->listWidget->setFlow(QListView::LeftToRight);
                    ui->listWidget->setMinimumSize(1200,350);
                    ui->listWidget->setGridSize(QSize(360, 360));
                    ui->listWidget->setResizeMode(QListView::Adjust);
                    ui->listWidget->setViewMode(QListView::ListMode);
                    ui->listWidget->setWrapping(true);
                    
                    QDir directory = QFileDialog::getExistingDirectory(this, tr("Open Directory"),"/home",
                                                                       
                                                                       QFileDialog::ShowDirsOnly| QFileDialog::DontResolveSymlinks);
                    
                    directory.setNameFilters({"*.mp4" , "*.avi" , "*.flv" , "*.mwv"});
                    
                    for(const QFileInfo & finfo: directory.entryInfoList()){
                        QMediaPlayer *mediaPlayer = new QMediaPlayer();
                        mediaPlayer->setMedia(QUrl::fromLocalFile(finfo.absoluteFilePath()));
                        // mediaPlayer->setMedia(playlist);
                        videoItem = new QGraphicsVideoItem;
                        videoItem->setSize(QSize(320,240));
                        QGraphicsScene *scene = new QGraphicsScene(this);
                        QGraphicsView *graphicsView = new QGraphicsView(scene);
                        
                        
                        
                        
                        mediaPlayer->setVideoOutput(videoItem);
                        player.append(mediaPlayer);
                        scene->addItem(videoItem);
                        
                        connect(mediaPlayer, &QMediaPlayer::stateChanged, this, &MainWindow::mediaStateChanged);
                        
                        connect(mediaPlayer, &QMediaPlayer::positionChanged, this, &MainWindow::positionChanged);
                        connect(mediaPlayer, &QMediaPlayer::durationChanged, this, &MainWindow::durationChanged);
                        
                        m_playButton = new QPushButton;
                        m_playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay));
                        
                        connect(m_playButton, &QAbstractButton::clicked, [mediaPlayer]() {
                            switch (mediaPlayer->state()) {
                            case QMediaPlayer::PlayingState:
                                mediaPlayer->pause();
                                break;
                            default:
                                mediaPlayer->play();
                                break;
                            }
                        });
                        
                        connect(mediaPlayer, &QMediaPlayer::stateChanged, [m_playButton, this](QMediaPlayer::State state) {
                            switch(state) {
                            case QMediaPlayer::PlayingState:
                                m_playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPause));
                                break;
                            default:
                                m_playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay));
                                break;
                            }
                        });
                        
                        
                        //connect(m_playButton, &QAbstractButton::clicked, this, &MainWindow::play);
                        //connect(m_positionSlider, &QAbstractSlider::sliderMoved,this, &MainWindow::setPosition);
                        
                        
                        
                        m_positionSlider = new QSlider(Qt::Horizontal);
                        m_positionSlider->setRange(0, 0);
                        
                        
                        auto    item = new QListWidgetItem("", ui->listWidget);
                        auto    widget = new QWidget;
                        auto    label = new QLabel(finfo.fileName());
                        auto    vb = new QVBoxLayout;
                        
                        QBoxLayout *controlLayout = new QHBoxLayout;
                        controlLayout->setMargin(0);
                        controlLayout->addWidget(m_playButton);
                        controlLayout->addWidget(m_positionSlider);
                        
                        vb->addWidget(label,1);
                        vb->addWidget(graphicsView,9);
                        vb->addLayout(controlLayout);
                        widget->setLayout(vb);
                        widget->setMinimumSize(340, 340);
                        ui->listWidget->setItemWidget(item,widget);
                        
                        
                    }
                        
                }
                MainWindow::~MainWindow()
                {
                    delete ui;
                }
                QSize MainWindow::sizeHint() const
                {
                    return (videoItem->size() * qreal(3) / qreal(2)).toSize();
                }
                
                void MainWindow::positionChanged(qint64 position)
                {
                    m_positionSlider->setValue(position);
                }
                
                void MainWindow::durationChanged(qint64 duration)
                {
                    m_positionSlider->setRange(0, duration);
                }
                
                void MainWindow::setPosition(int position)
                {
                    QMediaPlayer *mediaPlayer = player[1];
                    mediaPlayer->setPosition(position);
                }
                
                J D 2 Replies Last reply 3 Jul 2018, 08:30
                0
                • K Kinesis
                  3 Jul 2018, 08:17

                  @jsulm
                  Here is the code

                  MainWindow::MainWindow(QWidget *parent) :
                      QMainWindow(parent),
                      ui(new Ui::MainWindow)
                  {
                      ui->setupUi(this);
                      
                      ui->listWidget->setFlow(QListView::LeftToRight);
                      ui->listWidget->setMinimumSize(1200,350);
                      ui->listWidget->setGridSize(QSize(360, 360));
                      ui->listWidget->setResizeMode(QListView::Adjust);
                      ui->listWidget->setViewMode(QListView::ListMode);
                      ui->listWidget->setWrapping(true);
                      
                      QDir directory = QFileDialog::getExistingDirectory(this, tr("Open Directory"),"/home",
                                                                         
                                                                         QFileDialog::ShowDirsOnly| QFileDialog::DontResolveSymlinks);
                      
                      directory.setNameFilters({"*.mp4" , "*.avi" , "*.flv" , "*.mwv"});
                      
                      for(const QFileInfo & finfo: directory.entryInfoList()){
                          QMediaPlayer *mediaPlayer = new QMediaPlayer();
                          mediaPlayer->setMedia(QUrl::fromLocalFile(finfo.absoluteFilePath()));
                          // mediaPlayer->setMedia(playlist);
                          videoItem = new QGraphicsVideoItem;
                          videoItem->setSize(QSize(320,240));
                          QGraphicsScene *scene = new QGraphicsScene(this);
                          QGraphicsView *graphicsView = new QGraphicsView(scene);
                          
                          
                          
                          
                          mediaPlayer->setVideoOutput(videoItem);
                          player.append(mediaPlayer);
                          scene->addItem(videoItem);
                          
                          connect(mediaPlayer, &QMediaPlayer::stateChanged, this, &MainWindow::mediaStateChanged);
                          
                          connect(mediaPlayer, &QMediaPlayer::positionChanged, this, &MainWindow::positionChanged);
                          connect(mediaPlayer, &QMediaPlayer::durationChanged, this, &MainWindow::durationChanged);
                          
                          m_playButton = new QPushButton;
                          m_playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay));
                          
                          connect(m_playButton, &QAbstractButton::clicked, [mediaPlayer]() {
                              switch (mediaPlayer->state()) {
                              case QMediaPlayer::PlayingState:
                                  mediaPlayer->pause();
                                  break;
                              default:
                                  mediaPlayer->play();
                                  break;
                              }
                          });
                          
                          connect(mediaPlayer, &QMediaPlayer::stateChanged, [m_playButton, this](QMediaPlayer::State state) {
                              switch(state) {
                              case QMediaPlayer::PlayingState:
                                  m_playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPause));
                                  break;
                              default:
                                  m_playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay));
                                  break;
                              }
                          });
                          
                          
                          //connect(m_playButton, &QAbstractButton::clicked, this, &MainWindow::play);
                          //connect(m_positionSlider, &QAbstractSlider::sliderMoved,this, &MainWindow::setPosition);
                          
                          
                          
                          m_positionSlider = new QSlider(Qt::Horizontal);
                          m_positionSlider->setRange(0, 0);
                          
                          
                          auto    item = new QListWidgetItem("", ui->listWidget);
                          auto    widget = new QWidget;
                          auto    label = new QLabel(finfo.fileName());
                          auto    vb = new QVBoxLayout;
                          
                          QBoxLayout *controlLayout = new QHBoxLayout;
                          controlLayout->setMargin(0);
                          controlLayout->addWidget(m_playButton);
                          controlLayout->addWidget(m_positionSlider);
                          
                          vb->addWidget(label,1);
                          vb->addWidget(graphicsView,9);
                          vb->addLayout(controlLayout);
                          widget->setLayout(vb);
                          widget->setMinimumSize(340, 340);
                          ui->listWidget->setItemWidget(item,widget);
                          
                          
                      }
                          
                  }
                  MainWindow::~MainWindow()
                  {
                      delete ui;
                  }
                  QSize MainWindow::sizeHint() const
                  {
                      return (videoItem->size() * qreal(3) / qreal(2)).toSize();
                  }
                  
                  void MainWindow::positionChanged(qint64 position)
                  {
                      m_positionSlider->setValue(position);
                  }
                  
                  void MainWindow::durationChanged(qint64 duration)
                  {
                      m_positionSlider->setRange(0, duration);
                  }
                  
                  void MainWindow::setPosition(int position)
                  {
                      QMediaPlayer *mediaPlayer = player[1];
                      mediaPlayer->setPosition(position);
                  }
                  
                  J Online
                  J Online
                  jsulm
                  Lifetime Qt Champion
                  wrote on 3 Jul 2018, 08:30 last edited by
                  #30

                  @Kinesis And exactly this code does not build?

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

                  1 Reply Last reply
                  0
                  • K Kinesis
                    3 Jul 2018, 08:17

                    @jsulm
                    Here is the code

                    MainWindow::MainWindow(QWidget *parent) :
                        QMainWindow(parent),
                        ui(new Ui::MainWindow)
                    {
                        ui->setupUi(this);
                        
                        ui->listWidget->setFlow(QListView::LeftToRight);
                        ui->listWidget->setMinimumSize(1200,350);
                        ui->listWidget->setGridSize(QSize(360, 360));
                        ui->listWidget->setResizeMode(QListView::Adjust);
                        ui->listWidget->setViewMode(QListView::ListMode);
                        ui->listWidget->setWrapping(true);
                        
                        QDir directory = QFileDialog::getExistingDirectory(this, tr("Open Directory"),"/home",
                                                                           
                                                                           QFileDialog::ShowDirsOnly| QFileDialog::DontResolveSymlinks);
                        
                        directory.setNameFilters({"*.mp4" , "*.avi" , "*.flv" , "*.mwv"});
                        
                        for(const QFileInfo & finfo: directory.entryInfoList()){
                            QMediaPlayer *mediaPlayer = new QMediaPlayer();
                            mediaPlayer->setMedia(QUrl::fromLocalFile(finfo.absoluteFilePath()));
                            // mediaPlayer->setMedia(playlist);
                            videoItem = new QGraphicsVideoItem;
                            videoItem->setSize(QSize(320,240));
                            QGraphicsScene *scene = new QGraphicsScene(this);
                            QGraphicsView *graphicsView = new QGraphicsView(scene);
                            
                            
                            
                            
                            mediaPlayer->setVideoOutput(videoItem);
                            player.append(mediaPlayer);
                            scene->addItem(videoItem);
                            
                            connect(mediaPlayer, &QMediaPlayer::stateChanged, this, &MainWindow::mediaStateChanged);
                            
                            connect(mediaPlayer, &QMediaPlayer::positionChanged, this, &MainWindow::positionChanged);
                            connect(mediaPlayer, &QMediaPlayer::durationChanged, this, &MainWindow::durationChanged);
                            
                            m_playButton = new QPushButton;
                            m_playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay));
                            
                            connect(m_playButton, &QAbstractButton::clicked, [mediaPlayer]() {
                                switch (mediaPlayer->state()) {
                                case QMediaPlayer::PlayingState:
                                    mediaPlayer->pause();
                                    break;
                                default:
                                    mediaPlayer->play();
                                    break;
                                }
                            });
                            
                            connect(mediaPlayer, &QMediaPlayer::stateChanged, [m_playButton, this](QMediaPlayer::State state) {
                                switch(state) {
                                case QMediaPlayer::PlayingState:
                                    m_playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPause));
                                    break;
                                default:
                                    m_playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay));
                                    break;
                                }
                            });
                            
                            
                            //connect(m_playButton, &QAbstractButton::clicked, this, &MainWindow::play);
                            //connect(m_positionSlider, &QAbstractSlider::sliderMoved,this, &MainWindow::setPosition);
                            
                            
                            
                            m_positionSlider = new QSlider(Qt::Horizontal);
                            m_positionSlider->setRange(0, 0);
                            
                            
                            auto    item = new QListWidgetItem("", ui->listWidget);
                            auto    widget = new QWidget;
                            auto    label = new QLabel(finfo.fileName());
                            auto    vb = new QVBoxLayout;
                            
                            QBoxLayout *controlLayout = new QHBoxLayout;
                            controlLayout->setMargin(0);
                            controlLayout->addWidget(m_playButton);
                            controlLayout->addWidget(m_positionSlider);
                            
                            vb->addWidget(label,1);
                            vb->addWidget(graphicsView,9);
                            vb->addLayout(controlLayout);
                            widget->setLayout(vb);
                            widget->setMinimumSize(340, 340);
                            ui->listWidget->setItemWidget(item,widget);
                            
                            
                        }
                            
                    }
                    MainWindow::~MainWindow()
                    {
                        delete ui;
                    }
                    QSize MainWindow::sizeHint() const
                    {
                        return (videoItem->size() * qreal(3) / qreal(2)).toSize();
                    }
                    
                    void MainWindow::positionChanged(qint64 position)
                    {
                        m_positionSlider->setValue(position);
                    }
                    
                    void MainWindow::durationChanged(qint64 duration)
                    {
                        m_positionSlider->setRange(0, duration);
                    }
                    
                    void MainWindow::setPosition(int position)
                    {
                        QMediaPlayer *mediaPlayer = player[1];
                        mediaPlayer->setPosition(position);
                    }
                    
                    D Offline
                    D Offline
                    Devopia53
                    wrote on 3 Jul 2018, 08:38 last edited by
                    #31

                    @Kinesis

                    Declare QPushButton as a local variable like a mediaPlayer. A lambda function can not capture member variables of this.

                    A 1 Reply Last reply 3 Jul 2018, 08:41
                    0
                    • D Devopia53
                      3 Jul 2018, 08:38

                      @Kinesis

                      Declare QPushButton as a local variable like a mediaPlayer. A lambda function can not capture member variables of this.

                      A Offline
                      A Offline
                      aha_1980
                      Lifetime Qt Champion
                      wrote on 3 Jul 2018, 08:41 last edited by
                      #32

                      @Devopia53 No, it can:

                      auto l = [this]() {
                        // use members of this here
                      }
                      

                      Qt has to stay free or it will die.

                      D 1 Reply Last reply 3 Jul 2018, 11:24
                      0
                      • K Offline
                        K Offline
                        Kinesis
                        wrote on 3 Jul 2018, 08:49 last edited by Kinesis 7 Mar 2018, 09:01
                        #33

                        @jsulm - Yes it does not work
                        @Devopia53 - When I declare local variable , it works.
                        @aha_1980 - I will also try like U said .
                        Sorry for replying in the same reply . Because I am a new user . I can only post per every 600s

                        1 Reply Last reply
                        0
                        • K Offline
                          K Offline
                          Kinesis
                          wrote on 3 Jul 2018, 09:21 last edited by Kinesis 7 Apr 2018, 04:06
                          #34

                          I still have a question . I replaced the slider slots into loop but I can't control the sliders and sliders are not moving when the videos are running .
                          Here is the slider code

                          QSlider *m_positionSlider = new QSlider(Qt::Horizontal);
                                  m_positionSlider->setRange(0, 0);
                          
                                 
                                  connect(mediaPlayer, &QMediaPlayer::positionChanged ,[m_positionSlider, this](qint64 position){
                          
                                      m_positionSlider->setValue(position);
                                  });
                          
                                  connect(mediaPlayer, &QMediaPlayer::durationChanged ,[m_positionSlider, this](qint64 duration){
                          
                                      m_positionSlider->setRange(0,duration);
                                  });
                          
                          
                                  connect(mediaPlayer , &QMediaPlayer::setPosition, [mediaPlayer ,this] (int position){
                          
                                      mediaPlayer->setPosition(position);
                                  });
                          
                          
                          J 1 Reply Last reply 3 Jul 2018, 10:27
                          0
                          • K Kinesis
                            3 Jul 2018, 09:21

                            I still have a question . I replaced the slider slots into loop but I can't control the sliders and sliders are not moving when the videos are running .
                            Here is the slider code

                            QSlider *m_positionSlider = new QSlider(Qt::Horizontal);
                                    m_positionSlider->setRange(0, 0);
                            
                                   
                                    connect(mediaPlayer, &QMediaPlayer::positionChanged ,[m_positionSlider, this](qint64 position){
                            
                                        m_positionSlider->setValue(position);
                                    });
                            
                                    connect(mediaPlayer, &QMediaPlayer::durationChanged ,[m_positionSlider, this](qint64 duration){
                            
                                        m_positionSlider->setRange(0,duration);
                                    });
                            
                            
                                    connect(mediaPlayer , &QMediaPlayer::setPosition, [mediaPlayer ,this] (int position){
                            
                                        mediaPlayer->setPosition(position);
                                    });
                            
                            
                            J Online
                            J Online
                            jsulm
                            Lifetime Qt Champion
                            wrote on 3 Jul 2018, 10:27 last edited by jsulm 7 Mar 2018, 10:30
                            #35

                            @Kinesis What is this:

                            connect(mediaPlayer , &QMediaPlayer::setPosition, [mediaPlayer ,this] (int position){
                            
                                        mediaPlayer->setPosition(position);
                                    });
                            

                            ?
                            QMediaPlayer::setPosition() is a slot not a signal.
                            I think you need to change the range

                            m_positionSlider->setRange(0, 0);
                            

                            You can use http://doc.qt.io/qt-5/qmediaplayer.html#duration-prop to set the range.

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

                            K 1 Reply Last reply 4 Jul 2018, 04:18
                            1
                            • A aha_1980
                              3 Jul 2018, 08:41

                              @Devopia53 No, it can:

                              auto l = [this]() {
                                // use members of this here
                              }
                              
                              D Offline
                              D Offline
                              Devopia53
                              wrote on 3 Jul 2018, 11:24 last edited by Devopia53 7 Mar 2018, 11:25
                              #36

                              @aha_1980

                              I know that well(as [&] or [=]). But what I have described is that you have captured the member variables of the this object directly. Take a look at his source code. here: connect(mediaPlayer, &QMediaPlayer::stateChanged, [m_playButton, this](QMediaPlayer::State state)
                              A m_playButton is a member of the this.

                              1 Reply Last reply
                              1
                              • J jsulm
                                3 Jul 2018, 10:27

                                @Kinesis What is this:

                                connect(mediaPlayer , &QMediaPlayer::setPosition, [mediaPlayer ,this] (int position){
                                
                                            mediaPlayer->setPosition(position);
                                        });
                                

                                ?
                                QMediaPlayer::setPosition() is a slot not a signal.
                                I think you need to change the range

                                m_positionSlider->setRange(0, 0);
                                

                                You can use http://doc.qt.io/qt-5/qmediaplayer.html#duration-prop to set the range.

                                K Offline
                                K Offline
                                Kinesis
                                wrote on 4 Jul 2018, 04:18 last edited by
                                #37

                                @jsulm
                                Thanks for your suggestion . Now the slider is running along with video.But to use it like skip slider how should I correct this "QMediaPlayer::setPosition() " which is a slot but not a signal ?By the way , sorry for late response .

                                J 1 Reply Last reply 4 Jul 2018, 04:21
                                0
                                • K Kinesis
                                  4 Jul 2018, 04:18

                                  @jsulm
                                  Thanks for your suggestion . Now the slider is running along with video.But to use it like skip slider how should I correct this "QMediaPlayer::setPosition() " which is a slot but not a signal ?By the way , sorry for late response .

                                  J Online
                                  J Online
                                  jsulm
                                  Lifetime Qt Champion
                                  wrote on 4 Jul 2018, 04:21 last edited by
                                  #38

                                  @Kinesis You don't need

                                  connect(mediaPlayer , &QMediaPlayer::setPosition, [mediaPlayer ,this] (int position){
                                  
                                              mediaPlayer->setPosition(position);
                                          });
                                  

                                  You're already using QMediaPlayer::positionChanged...

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

                                  K 1 Reply Last reply 4 Jul 2018, 04:39
                                  0
                                  • J jsulm
                                    4 Jul 2018, 04:21

                                    @Kinesis You don't need

                                    connect(mediaPlayer , &QMediaPlayer::setPosition, [mediaPlayer ,this] (int position){
                                    
                                                mediaPlayer->setPosition(position);
                                            });
                                    

                                    You're already using QMediaPlayer::positionChanged...

                                    K Offline
                                    K Offline
                                    Kinesis
                                    wrote on 4 Jul 2018, 04:39 last edited by
                                    #39

                                    @jsulm
                                    I got this. It's done now. My code is working fully 100% now . Thanks a lot for helping me . I fell bad that I wasted your time . By the way should I upload my
                                    code ? It might help someone . Thanks.

                                    J 1 Reply Last reply 4 Jul 2018, 04:45
                                    1
                                    • K Kinesis
                                      4 Jul 2018, 04:39

                                      @jsulm
                                      I got this. It's done now. My code is working fully 100% now . Thanks a lot for helping me . I fell bad that I wasted your time . By the way should I upload my
                                      code ? It might help someone . Thanks.

                                      J Online
                                      J Online
                                      jsulm
                                      Lifetime Qt Champion
                                      wrote on 4 Jul 2018, 04:45 last edited by
                                      #40

                                      @Kinesis No need to feel bad - I'm helping here voluntary :-)
                                      I don't think you need to upload your code. If somebody has questions he/she can ask.

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

                                      1 Reply Last reply
                                      2
                                      • W Offline
                                        W Offline
                                        WoodyLanes
                                        Banned
                                        wrote on 31 Aug 2022, 18:57 last edited by WoodyLanes
                                        #41
                                        This post is deleted!
                                        1 Reply Last reply
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