FORMAT            861 modules/videoio/src/cap_gstreamer.cpp         status = gst_element_query_position(sink, FORMAT, &value);
FORMAT            869 modules/videoio/src/cap_gstreamer.cpp         status = gst_element_query_position(sink, FORMAT, &value);
FORMAT            877 modules/videoio/src/cap_gstreamer.cpp         status = gst_element_query_position(sink, FORMAT, &value);