A video reportedly showing the final seconds from inside the cabin of the Germanwings plane that crashed in the French Alps last week emerged on Tuesday, revealing the harrowing situation as passengers realized they were moments from death.

The French magazine Paris Match and German daily Bild both reported of having seen the video, which was recorded on a cell phone, and say it is of "unquestionable" authenticity having been found amid the debris of the crash, reports AFP.

In one part of the video, which is just several seconds long, passengers are reportedly seen in distress shouting "my God" as the plane plummets straight for the mountains.

The plane crash killed all 150 people on board, and seems to have been the intentional act of co-pilot Andreas Lubitz, who reportedly suffered from suicidal tendencies and depression.

Describing the video, Paris Match wrote "the scene was so chaotic that it was hard to identify people, but the sounds of the screaming passengers made it perfectly clear that they were aware of what was about to happen to them."

It added that people are heard in the video screaming "my God" in several languages.

The paper noted that in the video "metallic banging" is heard more than three times, in what is likely the unsuccessful attempts of the pilot to force his way back into the cockpit after Lubitz locked him out before taking the plane down.

Lubitz's ex-girlfriend recently revealed her first-hand witnessing of his psychological problems, and how he once told her "one day I'm going to do something that will change the whole system, and everyone will know my name and remember."