pub unsafe extern "C" fn ges_marker_list_move(
list: *mut GESMarkerList,
marker: *mut GESMarker,
position: GstClockTime
) -> gboolean
pub unsafe extern "C" fn ges_marker_list_move(
list: *mut GESMarkerList,
marker: *mut GESMarker,
position: GstClockTime
) -> gboolean