The footage was released by the PSNI major investigation team who are probing the murder of Sean Fox who was 42-year-old at the time of his death.
The video was obtained News Letter.
Detective Superintendent Eamonn Corrigan gave an account of what happened. He said:
“On Sunday afternoon, at around 2.25pm, two masked gunmen entered the Donegal Celtic Sports and Social Club on the Suffolk Road in west Belfast and made their way past several people.
“Sean Fox, who was a married father of two and a regular visitor to the club, was singled out as he sat enjoying a drink in a busy function room.
“He was shot multiple times by both gunmen.
“At one point, both gunmen stood over Sean, shooting him, as he collapsed to the floor.
“This was a calculated, planned, ruthless execution.
“It was carried out in broad daylight and in the presence of others.
“The gunmen arrived, carried out the murder and left the club in under a minute.
“They were inside the premises for approximately 21 seconds.”