VideoCapture resolution fallback behavior across V4L2 and GStreamer backends
Goal Request a specific frame resolution through VideoCapture::set(CAP_PROP_FRAME_WIDTH, ...) and CAP_PROP_FRAME_HEIGHT on Linux, then verify that the captured frames match the requested dimensions. Constraints and uncertainty The OpenCV documentation does not guarantee that the requested width and height are honored. On V4L2 the driver may ignore the proper