isOpened property

bool get isOpened

Returns true if video capturing has been initialized already.

If the previous call to VideoCapture constructor or VideoCapture::open() succeeded, the method returns true. https://docs.opencv.org/4.x/d8/dfe/classcv_1_1VideoCapture.html#aa6480e6972ef4c00d74814ec841a2939

Implementation

bool get isOpened {
  return cvRunArena<bool>((arena) {
    final p = arena<ffi.Int>();
    cvRun(() => cffi.VideoCapture_IsOpened(ref, p));
    return p.value != 0;
  });
}