.
You can see columns of police heading west along the sidelines as the game goes on, and fans running to the stands from the west end along the sidelines. The police knew there was trouble in the west end almost from the start therefore.
At 5:35 the camera turns to the west end pens where fans are steadily climbing over the fences, and you can see the congestion there.
The commentator states without a shadow of a doubt at 5:43-50, 'This is a match of course that everybody wanted to see, and the police have taken the decision that they've got to open the gates to ease the crush'.
At 6:53 the game is stopped.
7:17
'Capacity at Hillsborough, 54,100...and it would appear that too many of them are on that terrace behind Bruce Grobbelaar's goal'. The commentator says the crowd is in danger of encroaching on the pitch because of overcrowding behind the Forest goal.
At 6:55-57 you can see one fan in a beige/grey sweater and darker grey trousers arguing vehemently with someone on the field, punching his arms down in frustration, and then running while pointing back towards the situation in the pen. He is clearly saying what is going on and looking for help.
A British news report snippet follows where fans are blamed.