ADV7480 Video processing issue


We input a picture into ADV7480 from laptop as below (Picture 1) and perform video processing by qualcomm platform
The picture which there are much lattice squares. 

After video processing, the display on screen is like as picture 2

The lattice squares is gone, the screen is smoothly. 
May I know what kind of video setting of ADV7480 cause video decoding issue? 

Is there register of ADV7480 adjusting? 


Picture 1 :

Picture 2