It shows that users using Arma 3 footage to create fake videos of Ukraine may edit the footage to make it look blurrier and like the camera is shaking. This alone doesn’t prove a video isn’t genuine, but most phones have high quality cameras nowadays, and such blurry footage even at night isn’t as common.
The developer also points out that the video won’t feature any people moving. They say: “While the game can simulate the movement of military vehicles relatively realistically, capturing natural looking humans in motion is still very difficult, even for the most modern of games.” It also adds that viewers should look out for the game’s user interfaces, such as weapon selection, ammunition counters, vehicle status, in-game messages, which may appear at the corners.footage from Arma 3 appearing online alongside claims it shows Ukraine.
If you’re interested in finding out more about how we verify false videos, especially those around the war in Ukraine, you can read our blog post on the topic
It's rather ironic that you choose to show a photo of a real helicopter to illustrate this.