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  • Opencv ffmpeg: Video capture ("Filename.avi") crashes on a non development machine - MAC 10.8.2

    8 March 2013, by Jerry

    I was trying to deploy a simple Qt Opencv Application, the following is the code:

    Qt: .pro file:

    QT       += core gui
    
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
    
TARGET = opencvVideoTest
    
TEMPLATE = app
    

    
SOURCES += main.cpp\
    
    mainwindow.cpp
    

    
HEADERS  += mainwindow.h
    

    
FORMS    += mainwindow.ui
    

    
INCLUDEPATH = -I/usr/local/include
    

    
LIBS += -lm -lopencv_core -lopencv_highgui -lopencv_imgproc

    Mainwindow.cpp:

    #include "mainwindow.h"
    
#include "ui_mainwindow.h"
    
#include <opencv2></opencv2>core/core.hpp>
    
#include <opencv></opencv>cv.h>
    
#include <opencv2></opencv2>highgui/highgui.hpp>
    
#include <opencv2></opencv2>imgproc/imgproc.hpp>
    

    

    
MainWindow::MainWindow(QWidget *parent) :
    
    QMainWindow(parent),
    
    ui(new Ui::MainWindow)
    
{
    
    ui->setupUi(this);
    

    
    cv::Mat img;
    

    
   cv::VideoCapture cap("BMWM5.avi");
    

    
   if(cap.isOpened()){
    

    
   for(;;){
    
       cap.read(img);
    
       cv::resize(img,img,cv::Size(604,480));
    
       cv::imshow("Opencv", img);
    
       cv::waitKey(33);
    
   }
    
   }
    
   else{
    

    
   }
    

    

    
}
    

    
MainWindow::~MainWindow()
    
{
    
    delete ui;
    
}

    The above snippet works fine on the development machine, which by the has Opencv 2.4.3, ffmpeg 1.1.2 & Qt 5.0.1. This what happens when I try to deploy, running the otool before using macdeployqt and the output:

    >   /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current
    
 version 169.3.0)   /usr/local/opt/opencv/lib/libopencv_core.2.4.3.dylib
    
 (compatibility version 2.4.0, current version 2.4.3)
    
 >  /usr/local/opt/opencv/lib/libopencv_highgui.2.4.3.dylib
    
 (compatibility version 2.4.0, current version 2.4.3)
    
>   /usr/local/opt/opencv/lib/libopencv_imgproc.2.4.3.dylib
    
   (compatibility version 2.4.0, current version 2.4.3)
    
>   /usr/local/Qt5.0.1/5.0.1/clang_64/lib/QtWidgets.framework/Versions/5/QtWidgets
    
  (compatibility version 5.0.0, current version 5.0.1)
    
>   /usr/local/Qt5.0.1/5.0.1/clang_64/lib/QtGui.framework/Versions/5/QtGui
    
  (compatibility version 5.0.0, current version 5.0.1)
    
>   /usr/local/Qt5.0.1/5.0.1/clang_64/lib/QtCore.framework/Versions/5/QtCore
    
  (compatibility version 5.0.0, current version 5.0.1)
    
>   /System/Library/Frameworks/OpenGL.framework/Versions/A/OpenGL
    
  (compatibility version 1.0.0, current version 1.0.0)
    
>   /System/Library/Frameworks/AGL.framework/Versions/A/AGL
    
  (compatibility version 1.0.0, current version 1.0.0)
    
>   /usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current
    
  version 56.0.0)

    otool after macdeployqt output:

    /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 169.3.0)
    
    @executable_path/../Frameworks/libopencv_core.2.4.3.dylib (compatibility version 2.4.0, current version 2.4.3)
    
  @executable_path/../Frameworks/libopencv_highgui.2.4.3.dylib (compatibility version 2.4.0, current version 2.4.3)
    
  @executable_path/../Frameworks/libopencv_imgproc.2.4.3.dylib (compatibility version 2.4.0, current version 2.4.3)
    
  @executable_path/../Frameworks/QtWidgets.framework/Versions/5/QtWidgets

    (compatibility version 5.0.0, current version 5.0.1)
    @executable_path/../Frameworks/QtGui.framework/Versions/5/QtGui (compatibility version 5.0.0, current version 5.0.1)
    @executable_path/../Frameworks/QtCore.framework/Versions/5/QtCore (compatibility version 5.0.0, current version 5.0.1)
    /System/Library/Frameworks/OpenGL.framework/Versions/A/OpenGL (compatibility version 1.0.0, current version 1.0.0)
    /System/Library/Frameworks/AGL.framework/Versions/A/AGL (compatibility version 1.0.0, current version 1.0.0)
    /usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 56.0.0)

    But after deploying it, when I try and run the app on the user's machine it crashes, no error reported either, the exact samething used to happen in Windows but when I copied the opencv_ffmpeg.dll into the exe folder it worked fine. I tried to use the same logic here and failed, then I manually addded each lib files of all the ffmpeg and its dependency into the project folder and still failed. Any other solution, please help? I'm a newbie to mac dpeloyment. Am i missing or overlooked something?

  • Revert "build: disable iconv by default."

    9 March 2013, by Carl Eugen Hoyos

    Revert "build: disable iconv by default."

  • Revision cb7acbc0e1: Merge "Add vp9_idct4_1d_sse2" into experimental

    9 March 2013, by Yunqing Wang

    Merge "Add vp9_idct4_1d_sse2" into experimental

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