The last video of the 3 in the loft is blatantly faked. At 5:17 the light is turned off, this is to make it harder to spot his editing of the film. He has chopped the recording in editing while he has moved around beind the chimney stack ready to throw the guitar(? not sure what it is).
After he sets the camera down keep your eyes on the white box in the left corner, and watch closely the green arrow logo, light out at 5:17 and then you can clearly see the transition of the 2 merged segments of film at 5:20-5:25 where the camera has obviously slightly moved position we can see the logo move, now you know when to look you can spot the movement at other places of the film during this moment.