diff --git a/libmat2/__init__.py b/libmat2/__init__.py
index 1d945d4..46e56b3 100644
--- a/libmat2/__init__.py
+++ b/libmat2/__init__.py
@@ -38,13 +38,14 @@ DEPENDENCIES = {
     'Mutagen': 'mutagen',
     }
 
+CMD_DEPENDENCIES = {
+    'Exiftool': exiftool._get_exiftool_path,
+    'Ffmpeg': video._get_ffmpeg_path,
+    }
 
 def check_dependencies() -> Dict[str, bool]:
     ret = collections.defaultdict(bool)  # type: Dict[str, bool]
 
-    ret['Exiftool'] = bool(exiftool._get_exiftool_path())
-    ret['Ffmpeg'] = bool(video._get_ffmpeg_path())
-
     for key, value in DEPENDENCIES.items():
         ret[key] = True
         try:
@@ -52,6 +53,13 @@ def check_dependencies() -> Dict[str, bool]:
         except ImportError:  # pragma: no cover
             ret[key] = False  # pragma: no cover
 
+    for key, value in CMD_DEPENDENCIES.items():
+        ret[key] = True
+        try:
+            value()
+        except RuntimeError:  # pragma: no cover
+            ret[key] = False
+
     return ret