diff --git a/functions/ffprobe_duration.fish b/functions/ffprobe_duration.fish
new file mode 100644
index 0000000..a9a7826
--- /dev/null
+++ b/functions/ffprobe_duration.fish
@@ -0,0 +1,5 @@
+# ffprobe_duration <file>
+# print duration of video file
+function ffprobe_duration
+    ffprobe -v error -show_entries format=duration -of default=noprint_wrappers=1:nokey=1 $argv
+end