问当调用libvlc_media_new_path()时，为什么我的代码会崩溃？

EN

#include <stdlib.h>
#include "vlc/vlc.h"

int main(int argc, char* argv[]) {

    libvlc_instance_t* libvlc;
    libvlc_media_t* m;
    libvlc_media_player_t* mp;
    
    libvlc = libvlc_new(0, NULL);

    if (NULL == libvlc) {
        printf("LibVLC initialization failure.\n");
        return EXIT_FAILURE;
    }
   
    m = libvlc_media_new_path("/1.mp4");

    //m = libvlc_media_new_path("C:\\Programmieren\\PACA\\1.mp4");
    //m = libvlc_media_new_path("C:/Programmieren/PACA/1.mp4");
    //m = libvlc_media_new_path("C://Programmieren//PACA//1.mp4");
    //m = libvlc_media_new_path("C:\Programmieren\PACA\1.mp4");
    //m = libvlc_media_new_path("file:///C:/Programmieren/PACA/1.mp4");
    
    
    mp = libvlc_media_player_new_from_media(libvlc, m);
   

    return 0;
}