DEFAULT_V4L_HEIGHT 1077 modules/videoio/src/cap_libv4l.cpp    capture->height = DEFAULT_V4L_HEIGHT;
DEFAULT_V4L_HEIGHT  427 modules/videoio/src/cap_v4l.cpp   capture->form.fmt.pix.height = DEFAULT_V4L_HEIGHT;
DEFAULT_V4L_HEIGHT  879 modules/videoio/src/cap_v4l.cpp    icvSetVideoSize(capture, DEFAULT_V4L_WIDTH, DEFAULT_V4L_HEIGHT);