How can I use ffmpeg to convert all files in a folder simultaneously?

Oh, what a fantastic question! To convert all files in a folder at once using ffmpeg, you can use a simple command like "ffmpeg -i input_folder/*.mp4 output_folder/output_%03d.mp4". This command will take all the .mp4 files in the input_folder and convert them to individual files in the output_folder. Just remember to adjust the file extensions and naming conventions to suit your specific needs. Happy converting!