This is unbelievable if it exists. Video from inside seconds before it crashed. Harrowing mobile phone footage taken on board the doomed Germanwings flight has recorded the devastating moment that screaming passengers knew they were going to die, it has been claimed. The video, reportedly found amid the wreckage of last week's crash, allegedly captures the sound of terrified passengers crying 'Oh God' as the plane plunged into the French Alps, killing all 150 people on board. The clip, said to be just a few seconds long, was reportedly taken from a memory card which was found at the crash scene by a source close to the investigation According to two European newspapers who claim to have seen the footage, cries of 'oh God' can be heard in several different languages as chaos breaks out inside the cabin. They also describe the sound of metallic banging from inside the aircraft. Both papers suggest the bangs could be the sound of the frantic captain attempting to break open the cockpit door with an axe or metal object, as Andreas Lubitz set the aircraft onto a collision course into the mountain. German daily Bild and French magazine Paris Match said their reporters were shown the video after it was found on a memory chip that could have come from a mobile phone inside the aircraft. It comes as Paris Match also published a conversation between Lubitz and the captain which was transcribed from one of aircraft's black boxes by a special investigator, which suggested Lubitz had urged the captain to leave him alone in the cockpit. Lieutenant Colonel Jean-Marc Menichini, a high ranking official involved in the recovery operation, categorically denied that any mobile phone footage had been found by investigators at the site. But Paris Match said the footage, thought to have been filmed from the rear of the plane, was found 'among the wreckage by a source close to the investigation'. Bild, which described the scene as 'chaotic, totally blurred and completely shaky', also insisted that the accuracy of the video 'is beyond question'. According to Paris Match, cries of 'My God' can be heard in several languages, before three metallic bangs ring out. They added that the footage captures the plane shaking heavily, before the screaming 'intensifies'. Bild added that the aircraft appears to be touching a mountain, as more screams are heard. The camera then cuts out. Both papers say the footage supports the idea that the passengers 'knew what desperate situation they were in'. It added that no individuals could be identified. Although the two publications described the video in detail, neither posted the footage. Bild said it was just 'a few seconds' and that it is not clear whether a passenger or crew member had filmed it. Mobile phone tester Dirk Lorenz told Bild: 'It's very unlikely a mobile phone could have survived such an impact. 'However, a memory card can be very durable. Even if a mobile phone smashes into a thousand pieces the memory card can remain intact. For example when the impact was somewhat cushioned.' In a statement, Lufthansa said it was aware of reports about the footage but questioned whether a mobile phone could have withstood the impact. A spokesman for the company said: 'We have also read of reports in a French newspaper about the video. 'But we have not seen the video and we do not know if it exists. Therefore we cannot confirm if the video is genuine. 'Considering that everything on the plane was destroyed, it would be unusual for a mobile phone to survive the impact.' Investigators have also revealed how a transcription of one of the aircraft's black boxes recorded the moment that Captain Sondenheimer left Lubitz alone in the cockpit, telling him 'you are in control now'. According to the transcription, Lubitz chillingly replies: 'I hope so'. hen, when the door closed behind him, Lubitz is said to have flicked a switch which disabled the keypad on the cabin side of the door, triggering the descent. According to the investigator, the captain returns to the cockpit and can be heard banging on the cockpit door, urging his colleague to open up. As he attempts to break down the door with a fire extinguisher and a crowbar, he is heard shouting: 'Open this f*****g door!' By that time, Lubitz has switched the five-minute door look on, something which he is believed to have done twice during the eight-minute descent. Authorities have said Andreas Lubitz purposely crashed Flight 9525 into the French Alps on March 24, killing all 150 people aboard the flight from Barcelona to Duesseldorf. The transcription backs the view of French prosecutors, who say Lubitz urged his captain to leave the flight deck before disabling the key pad, which controls access to the cockpit. Today, Lufthansa Airlines admitted they knew six years ago that Lubitz suffered from a 'serious depressive episode'. The airline said that as part of its internal research it found emails Lubitz sent to the Lufthansa flight school in Bremen when he resumed his training there after an interruption of several months.