A small, struggling film fest is complaining that it had to change its schedule after its running dates were usurped by the Robert De Niro-sponsored Tribeca Film Festival.

Marco Ursino, director of the Brooklyn International Film Festival, told The Post that he was forced to destroy 20,000 postcards promoting his showcase because they contained the old dates.

Originally scheduled to unspool May 7-12 at the Brooklyn Museum of Art, Ursino’s event was forced to switch to April 29-May 5 when the Tribeca fest chose May 8-12 for its films.

Ursino said he called Tribeca organizers to complain but was told nothing could be done.

“I told them that perhaps we could sit down and talk, and they said, ‘Sure, we’ll call you.’ They never did.”

A third event, the Gen Art Film Festival, also had to change its dates because they conflicted with Tribeca’s.

But Jeffery Abramson, the Gen Art director, said he had no gripe with Tribeca.

“We have a built-in audience of hip, young people,” Abramson said.

A spokesman for the Tribeca event said:

“It was never the Tribeca Film Festival’s intention to inconvenience anybody. In fact, we had preferred other dates and had to change our dates because of some outside factors.

“In as much as this inconveniences anybody, that was never the intention.”

The author of this story is a judge at the Brooklyn festival.