You can configure Real-Time Audio-Video settings at the command line by using the Mac defaults system. With the defaults system, you can read, write, and delete Mac user defaults by using Terminal (/Applications/Utilities/Terminal.app).
Mac defaults belong to domains, and domains typically correspond to individual applications.
Note: You can adjust frame rates from 1 fps up to a maximum of 25 fps and resolution up to a maximum of 1920x1080. A high resolution at a fast frame rate might not be supported on all devices or in all environments.
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