I have a Mavic Pro, A few days ago it asked me to update my app. I did that and now when taking video it shows these strange patterns and scan lines. My Mavic has never been crashed or damaged in any way and it was working just foint until now. Any ideas?? I am fairly new to this and hope it is an easy fix.

Try reinstalling the app again

May be the settings were changed during update of the Go app. Have a look on to all settings. If this not helps then try AJC-W´s sugguestion. The most pixelations look like the zebra (over exposure warning)