this is my first drone.when i choose video this happens.why?green and purple lines apears and video isnt soft.stuck a lot.

Could you please clarify what mobile device you are using?
Did you check the original videos from SD card?

i use galaxy alpha.i install dji go finally 4.0.5.and downgrade the firmware rc to 1.6 from 1.8.it works very nice.but now i have problem with photos.they dont save anywhere.no sd no mobile.and when i press to take photo it appears in screen purple lines and stuck.i am confused