ffmpeg -i "Superman_and_Lois_S03E04.mkv" -c:v libvpx-vp9 -b:v 2000k -minrate 1500k -maxrate 2500k -crf 30 -row-mt 1 -threads 8 -c:a libopus -b:a 128k output.webm
Do not use libvpx-VP8 for this episode – the smoke/firehouse scenes will produce blocking artifacts. Always use VP9 for modern live-action TV. superman & lois s03e04 libvpx