Q. How do I cite a YouTube video in Chicago style?
A. Most content on YouTube is created not by YouTube but by someone else, so the key to citing a YouTube video is to provide details for the item itself (by doing additional research if necessary). Then you can fill in the details related to YouTube (at the very least by including a URL). For example, you could cite the 2019 State of the City address by the mayor of New York City as follows:
Note:
1. Bill de Blasio, “Mayor de Blasio Delivers State of the City Address,” NYC Mayor’s Office, streamed live on January 10, 2019, YouTube video, 1:22:40, https://youtu.be/aZZYlpfZ-iA.
Bibliography:
de Blasio, Bill. “Mayor de Blasio Delivers State of the City Address.” NYC Mayor’s Office. Streamed live on January 10, 2019. YouTube video, 1:22:40. https://youtu.be/aZZYlpfZ-iA.
The details of the citation will vary depending on the type of source and the focus of your research. For more advice on citing multimedia content, including examples, see CMOS 14.261–68.