Shortly after rising up to expel the Fascist sympathising army from Barcelona the CNT Anarchosyndicalist Union produced a documentary film called Reportaje del movimiento revolucionario en Barcelona (Report on the Revolutionary Movement in Barcelona) its somewhat famous in war documentary circles. Unfortunately by Spanish is poor and it seemed impossible to track down an English translation.
Fortunately the search has borne fruit.
Link https://youtu.be/yznVWgOtA8o
Probably the first news film of the war, this report from the recently collectivized film industry documents the scene in Barcelona in the early days of the war/revolution following the defeat of the initial coup attempt. Footage of the aftermath of clashes (including the assault on the Atarazanas barracks) & jubilant crowds are a prominent sight in this report. In definitely captures the spirit of the early stages of the revolution.