From b2b84e7034b3d76c9a2de77e556d9813ae3f4618 Mon Sep 17 00:00:00 2001
From: Luke Childs <lukechilds123@gmail.com>
Date: Sun, 3 Jul 2016 23:48:18 +0100
Subject: [PATCH] Check for ffmpeg

---
 gifgen | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/gifgen b/gifgen
index 3585445..46b8d93 100755
--- a/gifgen
+++ b/gifgen
@@ -45,6 +45,12 @@ done
 # Show help and exit if we have no input
 [[ "$input" = "" ]] || [[ $show_help = true ]] && show_help && exit
 
+# If we're not just showing help check we have ffmpeg
+type ffmpeg >/dev/null 2>&1 || {
+  echo "Error: gifgen requires ffmpeg to be installed"
+  exit 1
+}
+
 # Set output filename if not specified
 input_filename=${input##*/}
 output=${input_filename%.*}.gif