diff --git a/pack-vid b/pack-vid
index c81e0f9..cbe3445 100755
--- a/pack-vid
+++ b/pack-vid
@@ -95,9 +95,15 @@ function convert( $src, $dest, $options ) {
 
     $probe = ffprobe( $src );
 
-    $videoTracks = array_filter( $probe->streams, function ( $stream ) {
-        return $stream->codec_type === 'video';
-    } );
+    $videoTracks = array_values(
+        array_filter( $probe->streams, function ( $stream ) {
+            return $stream->codec_type === 'video';
+        } )
+    );
+    if ( count( $videoTracks ) == 0 ) {
+        var_dump( $probe );
+        die("oh no\n");
+    }
     $track = $videoTracks[0];
 
     $duration = floatval( $track->duration );