A film captures Jewish life in a Polish town before the Nazis arrived

Kurtz, nevertheless, understood the value of the material as evidence of Jewish life in Poland just before the Holocaust. It would take him nearly a year to figure it out, but he discovered that the footage depicted Nasielsk, his grandfather’s birthplace, a town about 30 miles northwest of Warsaw that some 3,000 Jews called home before the war.

Fewer than 100 would survive it.

Now, the Dutch filmmaker Bianca Stigter has used the fragmentary, ephemeral footage to create “Three Minutes: A Lengthening,” a 70-minute feature film that helps to further define what and who were lost.

“It’s a short piece of footage, but it’s amazing how much it yields,” Stigter said in an interview in Amsterdam recently. “Every time I see it, I see something I haven’t really seen before. I must have seen it thousands and thousands of times, but still, I can always see a detail that has escaped my attention before.”

Almost as unusual as the footage is the journey it took before gaining wider exposure. All but forgotten within his family, the videotape was transferred to DVD and sent to the U.S. Holocaust Memorial Museum in Washington in 2009.

“We knew it was unique,” said Leslie Swift, chief of the film, oral history and recorded sound branch of the museum. “I immediately communicated with him and said, ‘If you have the original film, that’s what we want.’”