[2] Chang released the medium length documentary, Earth to Mouth, in 2002 with the National Film Board of Canada.

[7] His documentary short, Gatekeeper, was released in 2016 and is streaming on Field of Vision, Laura Poitras' curated online film unit.

This is Not a Movie, his feature documentary about prolific Middle East correspondent, Robert Fisk, had its world premiere at the 2019 Toronto International Film Festival.

[10] Chang released Pandemic19 co-directed with his wife, Annie Katsura Rollins, executive produced by Jean Tsien, edited by Xi Feng and lensed by Derek Howard.

The jury wrote: "PANDEMIC19 is a poignant document of the factual and emotional details of Covid-19 as seen through the eyes of three American frontline doctors.

"[11] Chang wrote the neo-noir romantic screenplay for Eggplant《茄子》, his first narrative feature, about a wedding photographer's happenstance encounter with his swindler ex-girlfriend.