It's the ultimate in slow-motion footage. The BBC is to air a two-hour, real-time documentary following a canalboat as it pootles its way along a British waterway at a leisurely 4mph. For many, the languid film will be as interesting as watching paint dry, but the Corporation hopes many viewers will find it a refreshing change from the usual frenetic pace of modern TV. There is no presenter, narrator, dialogue or music, so all viewers will hear are the sounds of the boat's engine, the lapping of the water and the local birdsong as the barge makes its way along a picturesque stretch of the Kennet and Avon Canal. 00.00: And they're off! 0-4mph in ten minutes . 34.07: Bridge over (not at all) troubled water . 41.50: Crazy boy racers scream past at 5mph . Aside from two aerial cutaway shots, when the boat negotiates a lock and crosses the Dundas Aqueduct, the full two hours is shot continuously from a single camera on the front of the boat. Rather incongruously, it's the same specialist high-definition equipment used to shoot the action-packed James Bond blockbuster Skyfall. In contrast, the most exiting moments of All Aboard! The Canal Trip involve the narrowboat being overtaken by a swan, or having to manoeuvre out of the way of a pleasure craft. Other exciting scenes feature a plank of wood, a dog-walker and cyclists on the towpath. The film was shot on a sunny day last month and will air on May 5 as part of the BBC Four Goes Slow series of deliberately unrushed programmes. Producer Luke Korzun Martin said: 'We want the voyage to feel like a sensory experience. We want it to be mesmeric, hypnotic and beautiful. 'The idea was to create a moving painting. It is like a Constable landscape which changes in front of your eyes. If people are going to sit and watch a two-hour single shot, it needs to be the most beautiful two-hour shot it can be.' Rob Dean, of the Kennet and Avon Canal Trust, said: 'I think this is the right approach. The whole point about the waterways is they slow people down.' 55.40: Mayday! Mayday! Wild swan on the attack . 1hr, 45m: Gridlock... Canal swamped by two boats . 1hr 56m: It's all water over the bridge (at last)
The BBC is set to air a two-hour, real-time documentary following a boat .
For many, the languid film will be as interesting as watching paint dry .
Corporation hopes it'll be a change of pace from usual frenetic pace of TV .