Hi,
I recently started experiencing the exact same thing in the video below with my dji Mavic air 2. no drops or falls. Reinstalled dji fly but that didn't change anything.  

https://www.youtube.com/watch?v=P3yjj0MkCyQ

I am not using a sd card and it happens even when I a not recording. When I am recording the video is also glitching.

Glitch video

Hi there. Thank you for reaching out and we do apologize for the trouble. Can you please confirm if this issue happens even if you fly the unit outdoors? Since this issue also occurs while recording, try to have a test flight outdoors, record a short video then upload the file that came from the SD card to Google Drive or Youtube and send the link here for us to check. Please keep us posted. Thank you.

This video is from the card but also happens on the internal storage or even when I am not recording.