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GIF not Displayed in QT 5.15

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  • V Vivek_autometers

    V
    Vivek_autometers about a minute ago

    Hi All,
    I am using QT 5.15 for Development on Embedded Board.
    Rendering is done using Wayland.
    Following is the sample code I am using.
    ***#include "mainwindow.h"
    #include "ui_mainwindow.h"
    #include <QDialog>
    #include <QMovie>
    MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
    {
    ui->setupUi(this);
    QMovie *movie = new QMovie("doorClosel.gif");
    ui->label->show();

    ui->label->setMovie(movie);
    movie->start();
    }
    MainWindow::~MainWindow()
    {
    delete ui;
    }***
    The GIF File is in the local folder.
    Pro File Content:

    • QT += core gui 
    

    greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
    CONFIG += c++11
    DEFINES += QT_DEPRECATED_WARNINGS
    deprecated before Qt 6.0.0
    SOURCES +=
    main.cpp
    mainwindow.cpp
    HEADERS +=
    mainwindow.h
    FORMS +=
    mainwindow.ui
    Default rules for deployment.
    qnx: target.path = /tmp/$${TARGET}/bin
    else: unix:!android: target.path = /opt/$${TARGET}/bin
    !isEmpty(target.path): INSTALLS += target******
    It is working fine on the desktop
    but not showing in Embedded System.
    Can please someone explain how to do that on Embedded Board.
    Regards
    Vivek

    JonBJ Offline
    JonBJ Offline
    JonB
    wrote on last edited by JonB
    #2

    @Vivek_autometers said in GIF not Displayed in QT 5.15:

    QMovie *movie = new QMovie("doorClosel.gif");

    The GIF File is in the local folder.

    What "local folder", and what evidence do you have that using this relative path picks that up? Could you at least verify (in your code) that the file exists and has been picked up by this line of code?

    V 1 Reply Last reply
    0
    • Christian EhrlicherC Christian Ehrlicher moved this topic from C++ Gurus on
    • JonBJ JonB

      @Vivek_autometers said in GIF not Displayed in QT 5.15:

      QMovie *movie = new QMovie("doorClosel.gif");

      The GIF File is in the local folder.

      What "local folder", and what evidence do you have that using this relative path picks that up? Could you at least verify (in your code) that the file exists and has been picked up by this line of code?

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

      Hi @JonB

      I have verified it in 2 systems.
      Desktop and Target.
      Working on Desktop and not on target board.

      Regards

      Christian EhrlicherC JonBJ 2 Replies Last reply
      0
      • V Vivek_autometers

        Hi @JonB

        I have verified it in 2 systems.
        Desktop and Target.
        Working on Desktop and not on target board.

        Regards

        Christian EhrlicherC Offline
        Christian EhrlicherC Offline
        Christian Ehrlicher
        Lifetime Qt Champion
        wrote on last edited by
        #4
        1. Make sure the file really exists where you expect it as @JonB already told you by using e.g. QFile::exists() and/or moving it to a Qt resource.
        2. Make sure the Qt gif imageformat plugin is available and check if it gets correctly loaded.

        Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
        Visit the Qt Academy at https://academy.qt.io/catalog

        1 Reply Last reply
        0
        • V Vivek_autometers

          Hi @JonB

          I have verified it in 2 systems.
          Desktop and Target.
          Working on Desktop and not on target board.

          Regards

          JonBJ Offline
          JonBJ Offline
          JonB
          wrote on last edited by JonB
          #5

          @Vivek_autometers said in GIF not Displayed in QT 5.15:

          I have verified it in 2 systems.

          How does that verify that the file can be found? Do you understand where a relative path is sought from your running Qt application? Maybe it's different on target board from desktop (it may at least depend on how you invoked your application, for example from Creator or not, though there are other influencers.). Please put in code as I suggested and @Christian-Ehrlicher reiterated so that both you & we know for sure this is not an issue.

          V 1 Reply Last reply
          0
          • JonBJ JonB

            @Vivek_autometers said in GIF not Displayed in QT 5.15:

            I have verified it in 2 systems.

            How does that verify that the file can be found? Do you understand where a relative path is sought from your running Qt application? Maybe it's different on target board from desktop (it may at least depend on how you invoked your application, for example from Creator or not, though there are other influencers.). Please put in code as I suggested and @Christian-Ehrlicher reiterated so that both you & we know for sure this is not an issue.

            V Offline
            V Offline
            Vivek_autometers
            wrote on last edited by
            #6

            Hi @JonB

            Thanks for replying, but I have changed the file path to fix path
            *QMovie movie = new QMovie("/home/root/doorClosel.gif");

            still the same issue.

            My Query
            1: Does QT Wayland Support GIF Format
            2: If yes, is there any package missing that I should install

            Regards

            V Christian EhrlicherC 2 Replies Last reply
            0
            • V Vivek_autometers

              Hi @JonB

              Thanks for replying, but I have changed the file path to fix path
              *QMovie movie = new QMovie("/home/root/doorClosel.gif");

              still the same issue.

              My Query
              1: Does QT Wayland Support GIF Format
              2: If yes, is there any package missing that I should install

              Regards

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

              Hi @JonB,

              I just added Debug prints on Embedded Devices.
              Here is the out come

              *root@colibri-imx6-10923511:~# ./gif_flv_test
              File Exists

              Not a valid File*

              I am not sure why this is showing an invalid File.

              Regards

              1 Reply Last reply
              0
              • V Vivek_autometers

                Hi @JonB

                Thanks for replying, but I have changed the file path to fix path
                *QMovie movie = new QMovie("/home/root/doorClosel.gif");

                still the same issue.

                My Query
                1: Does QT Wayland Support GIF Format
                2: If yes, is there any package missing that I should install

                Regards

                Christian EhrlicherC Offline
                Christian EhrlicherC Offline
                Christian Ehrlicher
                Lifetime Qt Champion
                wrote on last edited by
                #8

                @Vivek_autometers said in GIF not Displayed in QT 5.15:

                1: Does QT Wayland Support GIF Format

                Make sure the Qt gif imageformat plugin is available and check if it gets correctly loaded.

                Reading would certainly help...

                Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
                Visit the Qt Academy at https://academy.qt.io/catalog

                V 1 Reply Last reply
                0
                • Christian EhrlicherC Christian Ehrlicher

                  @Vivek_autometers said in GIF not Displayed in QT 5.15:

                  1: Does QT Wayland Support GIF Format

                  Make sure the Qt gif imageformat plugin is available and check if it gets correctly loaded.

                  Reading would certainly help...

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

                  @Christian-Ehrlicher
                  I am cross checking for it.
                  I have the sample code that is working in Desktop but not on other system.
                  Surely reading and checking for the same

                  Regards

                  Christian EhrlicherC 1 Reply Last reply
                  0
                  • V Vivek_autometers

                    @Christian-Ehrlicher
                    I am cross checking for it.
                    I have the sample code that is working in Desktop but not on other system.
                    Surely reading and checking for the same

                    Regards

                    Christian EhrlicherC Offline
                    Christian EhrlicherC Offline
                    Christian Ehrlicher
                    Lifetime Qt Champion
                    wrote on last edited by
                    #10

                    @Vivek_autometers Why do you think just because it works on another machine means that the plugin is there on your target system and is loaded correctly??

                    Do whatever you want, I'm out.

                    Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
                    Visit the Qt Academy at https://academy.qt.io/catalog

                    V 1 Reply Last reply
                    0
                    • Christian EhrlicherC Christian Ehrlicher

                      @Vivek_autometers Why do you think just because it works on another machine means that the plugin is there on your target system and is loaded correctly??

                      Do whatever you want, I'm out.

                      V Offline
                      V Offline
                      Vivek_autometers
                      wrote on last edited by
                      #11

                      @Christian-Ehrlicher
                      That's what I wanted to figure out
                      I was just curious how to do it.

                      Christian EhrlicherC C 2 Replies Last reply
                      0
                      • V Vivek_autometers

                        @Christian-Ehrlicher
                        That's what I wanted to figure out
                        I was just curious how to do it.

                        Christian EhrlicherC Offline
                        Christian EhrlicherC Offline
                        Christian Ehrlicher
                        Lifetime Qt Champion
                        wrote on last edited by
                        #12

                        @Vivek_autometers said in GIF not Displayed in QT 5.15:

                        I was just curious how to do it.

                        Following my links would be a start...

                        Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
                        Visit the Qt Academy at https://academy.qt.io/catalog

                        1 Reply Last reply
                        0
                        • V Vivek_autometers

                          @Christian-Ehrlicher
                          That's what I wanted to figure out
                          I was just curious how to do it.

                          C Offline
                          C Offline
                          ChrisW67
                          wrote on last edited by
                          #13

                          @Vivek_autometers

                          1: Does QT Wayland Support GIF Format

                          Of course, if the GIF file is found and the Qt GIF image format plugin is present in the correct place on the running system. Which is why reading this...

                          Make sure the Qt gif imageformat plugin is available and check if it gets correctly loaded.

                          was important.

                          Well, have you deployed the Qt GIF image format plugin (.../imageformats/libqgif.so) on to the running system?
                          Have you checked that it has been found and loaded successfully?

                          export QT_DEBUG_PLUGINS=1
                          ./gif_flv_test
                          

                          Once you get it working, for the safety of all, do not run this as root.

                          1 Reply Last reply
                          1
                          • V Offline
                            V Offline
                            Vivek_autometers
                            wrote on last edited by
                            #14
                            This post is deleted!
                            1 Reply Last reply
                            0
                            • V Offline
                              V Offline
                              Vivek_autometers
                              wrote on last edited by
                              #15

                              Hi All,

                              Thank you for posting.
                              The issue is resolved.
                              Installed the missing plugin.

                              Regards
                              Vivek

                              1 Reply Last reply
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                              • V Vivek_autometers has marked this topic as solved on

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