Copy the following command, paste it into your terminal, and run it. If the output says command not found, you will have to install homebrew.To check you have homebrew installed, type brew -version and press enter. We will use homebrew to install or upgrade ffmpeg.If the first line of output starts with ffmpeg version 4, you have the version of ffmpeg required for the workshop.If the first line of output starts with ffmpeg version 3 or lower, you will have to update your installation of ffmpeg.If the output says command not found, you will have to install ffmpeg.In the terminal, type ffmpeg -version and press enter.
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