Linux & ffmpeg: One-liner to record your screen along with audio

screen_record_with_audio.sh

#!/bin/bash
set -e

resolution="$1"
if [[ -z "$resolution" ]]; then
  resolution="1366x768"
  echo "[WARN] No resolution passed. Defaulting to $resolution."
fi

outfile="$2"
if [[ -z "$outfile" ]]; then
  outfile="output-$(date +%s).mkv"
fi

# The input devices might need to changed depending on your setup
ffmpeg -f x11grab -s $resolution -i :0.0 -f alsa -i default $outfile