This clip is the opening scene from the movie, Touch of Evil, directed by Orson Welles in 1958.
In that era, it is so tough and complicated to shoot a literally single shot which do not rely on CGI or creating a series clips to composite one clip via editing junctions. In fact, in modern films, some so called long single shots just seem like single shots, because those long single shots consist of series of shorter takes, by using green/blue background (for VFX) and matching similarity of junctions between beginnings and ends of shorter takes.
In terms of artistic elements, the opening scene of Touch of Evil is also amazing. Between 20 sec and 30 sec of this video, after the murderer is out of frame, Orson Welles uses the shadow of the murderer to compensate the blank of fram, then the murderer is in the frame again. It looks beautiful as film is all about shadow and light. Then the murderer puts a dynamite into a car which belongs to the murderer’s target. This great setting makes the rest of minutes full of suspense, because the dynamite is quiet in the whole shot until the last second. Before the last second that the dynamite blows up, the protagonist comes in and comes out, again and again. Audiences worry about his life, that is how suspense works, and you never know when the dynamite explodes. Compared with opening scene of Touch of Evil, however, some of long takes within modern movies such as Atonement，Hugo and Breaking News are more likely showing off.