I want to write a code to capture an 13M image on Rockchip 3399 UNIX Platform. Who can provide some sample code?

I bought a Nanopi NEO04 (rk 3399) and connect to OV 13850. I installed friendly Desktop ubuntu gst-camera.sh is working with low resolution, for example width = 1920, height = 1080 How can I capture an image with = 3280 height =2160 using gst-camera or other code? I tried to change the width/height ...