MainWindow 0 0 1383 1116 0 0 600 800 MainWindow 0 0 2 2 2 1 100 50 0 6 0 50 ??????? 200 35 0 50 100 50 ?????? 200 35 rtmp??????? 300 30 rtmp://127.0.0.1:1935/live/1 60 50 ???? Qt::Horizontal 40 20 Qt::Vertical 20 40