From f26c1533eed37d8cda1f971e9e7a9aa383b39b6d Mon Sep 17 00:00:00 2001
From: Mattias Wadman <wader@spotify.com>
Date: Mon, 28 Dec 2015 21:34:48 +0100
Subject: [PATCH] Parse all ftyp:s as mp4

It seems audio only mp4 files use ftyp:s that should have video
---
 tag.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tag.go b/tag.go
index dabfaee..96a70b8 100644
--- a/tag.go
+++ b/tag.go
@@ -46,7 +46,7 @@ func ReadFrom(r io.ReadSeeker) (Metadata, error) {
 	case string(b[0:4]) == "OggS":
 		return ReadOGGTags(r)
 
-	case string(b[4:11]) == "ftypM4A":
+	case string(b[4:8]) == "ftyp":
 		return ReadAtoms(r)
 
 	case string(b[0:3]) == "ID3":