Unwilling to accept that Biden is now President, several people have been sharing memes suggesting that recent photos and video of Biden in the Oval Office are fake. The evidence presented seems large to be things like noticing the wallpaper was different years ago, or that when viewed from a low angle you see more trees, and from a high angle you see people and cars. There's also a claim that German TV released a photo of the "set"
This is indeed a backstage image of a fake oval office from Germany. It's the set used by the German program Bilt, for their election night coverage. Note the four people in the image above, here they are on German TV.
The various photos of Biden in the Oval Office with cars and people behind him are actually in the Oval office. There's a driveway out the window, and there's Secret Service and other people out there in cars and on foot.
The exact same trees and driveway are visible outside the Oval Office with Trump inside, the only real difference being that it's winter now, so the trees are bare. But there's a distinctive branch in the center window that should set the matter straight.
There have been some changes inside the office but mostly limited to changes in the statues and paintings. The rug has also been changed to a dark blue one. You can see those changes here: