An unauthorized documentary on Whitney Houston has ruffled feathers in the late entertainer's family.

Set to premiere April 26th at New York's Tribeca Film Festival, Whitney: Can I Be Me uses footage of Houston's 1999 tour and conversations with her friends, who defied Whitney's estate request that they not participate.

Filmmaker Nick Broomfield -- whose previous work includes films on Kurt Cobain and Courtney Love and the late rappers Biggie Smalls and Tupac Shakur -- explained to Billboard, "We tried to tell it from her point of view as much as possible, to get her voice in there. We asked ourselves at the end of every scene, 'Do we understand where Whitney’s heart is?'" Viewers will find her "very alive in the film. She’s anything but dismissed as a drug addict -- you can’t help but have respect for her."

But the film does point out the hangers-on in Whitney's life -- which could explain why her more than $200 million fortune melted away. Broomfield notes, "All her friends and family had cars and houses, and she basically was paying for it all. She was a generous person, but that was a big drain."