diff --git a/home/packages.nix b/home/packages.nix
index 9f47308..dcbe28c 100644
--- a/home/packages.nix
+++ b/home/packages.nix
@@ -74,6 +74,7 @@ with pkgs; [
   # Change recording from output to monitor: https://askubuntu.com/questions/682144/capturing-only-desktop-audio-with-ffmpeg/682793#682793
   # Split large file into chunks (https://unix.stackexchange.com/questions/1670/how-can-i-use-ffmpeg-to-split-mpeg-video-into-10-minute-chunks):
   # ffmpeg -i output.mp3 -c copy -map 0 -segment_time 00:15:00 -f segment output%03d.mp3
+  # Combine multiple files: https://trac.ffmpeg.org/wiki/Concatenate
   # Record audio and video on ubuntu: ffmpeg -f pulse -i alsa_output.pci-0000_00_1f.3.analog-stereo.monitor -f x11grab -y -framerate 30 -s 1280x720 -i :0.0 -c:v libx264 -preset superfast -crf 18 output.mkv
   # Find list of audio on ubuntu: pactl list | grep -A2 'Source #' | grep 'Name: '