diff --git a/README.md b/README.md
index 0753769..50faf4c 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,8 @@ You can run it as a cronjob if you wish.
 
 ## Do this first
 
+First make sure you have ffmpeg (specifically the binary ffprobe), and jq installed.
+
 Create a text file called paths.lst in the same folder as the script.
 
 Example: