The terminal will output a JSON block looking something like this (your numbers will vary):

Optimizing your digital collection requires a bit of trial and error with settings. Using a lower CRF value like 18 will result in a larger file with nearly lossless quality. If you are tight on storage space a CRF of 28 might be better as it significantly reduces file size with only a minor drop in visual fidelity. No matter your goal FFmpeg provides the tools necessary to preserve Young Sheldon Season 6 Episode 8 exactly how you want it. If you'd like to refine your file further, let me know: What is your ? What device will you use for playback? Do you need to hardcode subtitles into the video?

ffmpeg -i "young_sheldon_s06e08.mkv" -af loudnorm=print_format=json -f null -

ffmpeg -i "young_sheldon_s06e08.mkv" -af "acompressor=threshold=-20dB:ratio=4:attack=5:release=50" "young_sheldon_s06e08_compressed.mkv"