TORONTO — Jerry Stackhouse appeared in 1,045 N.B.A. games during his 18-year playing career, and most of those were televised. But many of his quiet, behind-the-scenes moments were captured for posterity, too.

Stackhouse made sure of it.

For the past 20 years, Stackhouse has worked to preserve his personal history — on film. During his playing days, he set up tripods to record his workouts. He took camcorders to team meetings. This season, he hired two cameramen to document his every move as a first-year coach in the N.B.A. Development League. He had to build a computer with a vast amount of storage to house all the digital footage.

The twist is that Stackhouse, 42, has rarely made any of his material available for public consumption. There are no plans for “Stackhouse: The Movie.”

Even his friends have questions. So many questions. And most of those questions start the same way: Why?