广告机的屏参修改示例，可以解决屏幕花屏和分辨率不适应的问题-Screen advertising parameters modify the sample, and the resolution of the video screen can solve problems not suited

42寸的广告机,里面装的是单片机的电脑主板,几乎没有视频输入接口。客户想用,让我试着弄一下。(display_param.cfg for 43' big screen)