Yes, by default. You can order layouts by stream name: user1, user2, ...
Actually, server crashes here. The reason is this string
layoutHeight = Math.min((int) ((layoutWidth*9.0d/16.0d)), (int) ((canvasHeight - (yUVFrameArr.length - 1) * PADDING_IN)/ (double) (yUVFrameArr.length - 1)));
In...