Robert Redford’s Sundance Film Festival, the world’s biggest showcase for independent cinema, comes to a close this weekend. The 11 day event started on a gloomy note with concerns about the economic state of independent cinema but it is finishing more hopefully. The outbreak of optimism follows the screening of some strong films. But as Talking Movies’ Tom Brook found out, when he spoke to Robert Redford, independent film is still in a fragile state.