diff --git a/app/Media/QuickTime/Atoms/moov/meta.php b/app/Media/QuickTime/Atoms/moov/meta.php
index 7fbdacb..d77cec7 100644
--- a/app/Media/QuickTime/Atoms/moov/meta.php
+++ b/app/Media/QuickTime/Atoms/moov/meta.php
@@ -31,7 +31,7 @@ class meta extends SubAtom
 					$m = [];
 					preg_match('/^([+-][0-9]{2,6}(?:\.[0-9]+)?)([+-][0-9]{3,7}(?:\.[0-9]+)?)([+-][0-9]+(?:\.[0-9]+)?)?/',$gps,$m);
 
-					return ['lat'=>(float)$m[1],'lon'=>(float)$m[2],'alt'=>(float)$m[3]];
+					return ['lat'=>(float)$m[1],'lon'=>(float)$m[2],'alt'=>isset($m[3]) ? (float)$m[3] : NULL];
 				} else {
 					return NULL;
 				}