opencv c++ corrupted double-linked list - c++

Question

I'm trying to get the fps from multiple cameras. This is the main:
int main(int argc, char* argv[])
{
//Load all cameras IP
map<string, string> camerasIp; //camera ID and Streaming URL
LoadConfig(&camerasIp);
//Get FPS of all cameras
map<string,string>::iterator it_cam;
while(true)
{
for(it_cam = camerasIp.begin(); it_cam != camerasIp.end(); ++it_cam)
{
GetCamFps(it_cam->second);
}
cout << "" << endl;
}
//Send FPS to server
...
return 0;
}
This is the GetCamFps method:
void GetCamFps(string url)
{
cout << "VideoCapture" << endl;
VideoCapture video(url);
cout << "Get frames" << endl;
double fps = video.get(CAP_PROP_FPS);
cout <<"Frames: " << fps << endl;
video.release();
}
And this is the exit:
VideoCapture
Get frames
Frames: 30
VideoCapture
corrupted double-linked list
Aborted (core dumped)
I tried adding a sleep to let some time between opening one url and another but didn't works. I checked the map and it's correct.
When I comment the two firsts cout in the method it works but after a while it fail again.
Output of gdb with backtrace:
Thread 1 "Fps_Monitoring" received signal SIGABRT, Aborted.
__GI_raise (sig=sig#entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
51 ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
(gdb) backtrace
#0 __GI_raise (sig=sig#entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#1 0x00007ffff51cc801 in __GI_abort () at abort.c:79
#2 0x00007ffff5215897 in __libc_message (action=action#entry=do_abort, fmt=fmt#entry=0x7ffff5342b9a "%s\n") at ../sysdeps/posix/libc_fatal.c:181
#3 0x00007ffff521c90a in malloc_printerr (str=str#entry=0x7ffff5340cba "corrupted double-linked list") at malloc.c:5350
#4 0x00007ffff521cac4 in malloc_consolidate (av=av#entry=0x7ffff5577c40 <main_arena>) at malloc.c:4456
#5 0x00007ffff52207d8 in _int_malloc (av=av#entry=0x7ffff5577c40 <main_arena>, bytes=bytes#entry=1600) at malloc.c:3703
#6 0x00007ffff52214eb in _int_memalign (av=0x7ffff5577c40 <main_arena>, alignment=64, bytes=<optimized out>) at malloc.c:4694
#7 0x00007ffff5226fba in _mid_memalign (address=<optimized out>, bytes=1496, alignment=<optimized out>) at malloc.c:3314
#8 __posix_memalign (memptr=0x7fffffffdad0, alignment=<optimized out>, size=1496) at malloc.c:5369
#9 0x00007ffff028e7e3 in av_malloc () from /usr/local/lib/libavutil.so.56
#10 0x00007ffff06b253b in avformat_alloc_context () from /usr/local/lib/libavformat.so.58
#11 0x00007ffff5f8b9a3 in CvCapture_FFMPEG::open(char const*) () from /usr/local/lib/libopencv_videoio.so.4.2
#12 0x00007ffff5f8e9ff in cv::cvCreateFileCapture_FFMPEG_proxy(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) ()
from /usr/local/lib/libopencv_videoio.so.4.2
#13 0x00007ffff5f71566 in cv::StaticBackend::createCapture(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const ()
from /usr/local/lib/libopencv_videoio.so.4.2
#14 0x00007ffff5f4cc17 in cv::VideoCapture::open(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int) ()
from /usr/local/lib/libopencv_videoio.so.4.2
#15 0x00007ffff5f4f595 in cv::VideoCapture::VideoCapture(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, int) ()
from /usr/local/lib/libopencv_videoio.so.4.2
#16 0x000055555555f9b3 in GetCamFps(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >) ()
#17 0x000055555555d5df in main ()
Any idea why the second videocapture doesn't work?
Thanks.