Don't process episodes one by one. Use a simple bash loop to handle all ten episodes of Season 2 at once.
for f in Party.Down.S02E*.mkv; do ffmpeg -i "$f" -c:v libx264 -crf 20 -tune grain -c:a aac "${f%.mkv}.mp4" done party down s02 ffmpeg
without losing the subtle cringe-inducing facial expressions of Henry Pollard. Don't process episodes one by one
ffmpeg -i input.mkv -aspect 16:9 -c copy output.mkv party down s02 ffmpeg
"Come on," I whispered. "Vfilter."
"You want to watch it?"