Warren Miller, a passionate skier and filmmaker whose movies introduced skiing and snowboarding to a wide audience, died on Wednesday at his home on Orcas Island in Puget Sound, near Seattle. He was 93.

His death was confirmed by Warren Miller Entertainment, the film company he founded and ran for four decades.

In 1946, at 22, Mr. Miller bought an eight-millimeter movie camera and headed from Los Angeles to Sun Valley, Idaho, a winter playground for the likes of Ernest Hemingway.

His stay was hardly glamorous. He lived in a camper trailer in a parking lot, worked as a ski instructor and hunted wild game for food. Still, each winter for the next several years, he returned to Los Angeles in the summer with skiing footage that captivated friends and provided the seed for a 50-year career devoted to bringing the mountains to the masses.