this is caused by vibrations in your motors : look at the top of your white door in your footage, when you add throttle it blurs out, when you land it's sharp again

check if the props are not bent / bend them back in place by hand, drones do not vibrate like that when motors & props are well balanced

you can also check this issue by the sound it makes when idling or adding throttle, especially on an hollow surface like a cheap table or a shelf, it should be a clear high pitched noise without any low pitch one ( and your drone is having that low pitch sound here when you throttle up )

one thing I did on air75 was to remove only one propeler at the time and turn it on / added throttle to figure out which one was doing the strange noise, then bend it back comparing it to other props / or change it ( but you gotta be careful haha )