c++ - cvCaptureFromFile- Opening Video from specific path - Raspberry Pi -

i have opencv-2.4.9 installed in raspberry pi. right trying load video specific path , tried both c , c++ api

c api: cvcapturefromfile(path);

c++ api: videocapture cap; cap.open(path)

i getting error , says not open file.

it works in windows , linux, not in raspberry pi. missing something?

c++ code:

#include <iostream> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <opencv2/opencv.hpp>  using namespace cv; using namespace std;  int main(){   videocapture cap("c:/users/nava/videos/file.mp4");   if (!cap.isopened()){     cout << "error opening video stream" << endl;     return -1;   } while (1){     mat frame;     if (!cap.read(frame)){         cout << "no frame available" << endl;         waitkey();     }     imshow("output", frame);     if (waitkey(33) == 27) break; } } 

c code:

#include "highgui.h"  int main(int argc, char** argv) {   cvnamedwindow("video",cv_window_autosize);   cvcapture* capture = cvcreatefilecapture("/home/pi/desktop/test.mp4");   iplimage* frame;   while(1)   {    frame = cvqueryframe(capture);    if(!frame) break;    cvshowimage("video", frame);    char c = cvwaitkey(33);    if(c == 27) break;   }   } 

you have install uv4l driver.follow tutorial :

http://www.linux-projects.org/modules/sections/index.php?op=viewarticle&artid=14