FFmpeg is a free and open-source software project consisting of a suite of libraries and programs for handling video, audio, and other multimedia files and streams. At its core is the command-line ffmpeg tool itself, designed for processing video and audio files. It is widely used for format transcoding, basic editing (trimming and concatenation), video scaling, video post-production effects, and standards compliance.

• Install Homebrew from the official website: https://brew.sh.
• Run in Terminal: brew install ffmpeg
• Find out where it was installed to with this command: which ffmpeg
• In Progressive Downloader, enable FFmpeg by checking the corresponding box.
• Confirm using the shown path if it's the same as in the previous step, or browse for the utility and select it manually.

• Install MacPorts from the official website: https://www.macports.org.
• Run in Terminal: sudo port install ffmpeg
• Find out where it was installed to with this command: which ffmpeg
• In Progressive Downloader, enable FFmpeg by checking the corresponding box.
• Confirm using the shown path if it's the same as in the previous step, or browse for the utility and select it manually.