从文件中读取视频时 opencv 的分段错误

Segmentation Fault with opencv on reading a video from a file

本文关键字：opencv 分段 错误 视频 文件 读取      更新时间：2023-10-16

>我正在运行一个简单的代码来从文件中捕获视频，但它返回了一个分段错误 

     #include "opencv2/highgui/highgui.hpp"
     #include<opencv2/opencv.hpp>
     #include <stdio.h>
     //#include <iostream>
     using namespace cv;
     using namespace std;
     int main()
     {
    CvCapture* capture = cvCreateFileCapture("/home/ayush/20130521053652.avi");
    IplImage* frame = NULL;
    if(!capture)
    {
        printf("Video Not Openedn");
        return -1;
    }
    int width = (int)cvGetCaptureProperty(capture,CV_CAP_PROP_FRAME_WIDTH);
    int height = (int)cvGetCaptureProperty(capture,CV_CAP_PROP_FRAME_HEIGHT);
    double fps = cvGetCaptureProperty(capture, CV_CAP_PROP_FPS);
    int frame_count = (int)cvGetCaptureProperty(capture,  CV_CAP_PROP_FRAME_COUNT);
    printf("Video Size = %d x %dn",width,height);
    printf("FPS = %fnTotal Frames = %dn",fps,frame_count);
    while(1)
    {
        frame = cvQueryFrame(capture);
        if(!frame)
        {
            printf("Capture Finishedn");
            break;
        }
        cvShowImage("video",frame);
        cvWaitKey(10);
    }
    cvReleaseCapture(&capture);
    return 0;
}

我也尝试了上面的代码，它实际上是特定问题的解决方案，但它仍然给了我同样的东西......

视频文件信息 

   $file 20130521053652.avi 
   20130521053652.avi: RIFF (little-endian) data, AVI, 640 x 480, 30.00 fps, video:

更多信息 

   Dimensions: 640 x 480
   Codec:      24-bit RGB
   Framerate:  30 frames per second
   Bitrate:    N/A

我认为编解码器一定有问题，我的平台是Linux/Ubuntu 12.04 LTS，请任何人建议我为此提供解决方案

通过 gdb 调试器，分段错误在 frame = cvQueryFrame(capture)

O/P是这个 

     (gdb) 
      66          frame = cvQueryFrame(capture);           
     (gdb) 
                  Program received signal SIGSEGV, Segmentation fault.
                __memcpy_ssse3 () at ../sysdeps/i386/i686/multiarch/memcpy-ssse3.S:160
       160  ../sysdeps/i386/i686/multiarch/memcpy-ssse3.S: No such file or directory.

通过Qt IDE==>调试 

      0xb751d9fa  <+0x146a>         movzbl (%eax),%eax
      1951  in ../sysdeps/i386/i686/multiarch/memcpy-ssse3.S
      0xb751d9fd  <+0x146d>         mov    %al,(%edx)
      1952  in ../sysdeps/i386/i686/multiarch/memcpy-ssse3.S
      1953  in ../sysdeps/i386/i686/multiarch/memcpy-ssse3.S
      0xb751d9ff  <+0x146f>         mov    0x8(%esp),%eax
      1954  in ../sysdeps/i386/i686/multiarch/memcpy-ssse3.S
      1955  in ../sysdeps/i386/i686/multiarch/memcpy-ssse3.S
      1956  in ../sysdeps/i386/i686/multiarch/memcpy-ssse3.S
      1957  in ../sysdeps/i386/i686/multiarch/memcpy-ssse3.S
      1958  in ../sysdeps/i386/i686/multiarch/memcpy-ssse3.S
      1959  in ../sysdeps/i386/i686/multiarch/memcpy-ssse3.S
      0xb751da03  <+0x1473>         pop    %ebx
      0xb751da04  <+0x1474

我在OpenCV 2.4中使用cvCaptureFromFile（）/cvQueryFrame（）遇到了同样的问题。 将我的 AVI 转换为 FLV（使用 avconv）对我有用。

我的猜测是这是一个OpenCV错误。

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