From 3cda8285a1ad84ed76b1de4dce0d545562da3a6f Mon Sep 17 00:00:00 2001
From: Surma <surma@surma.dev>
Date: Mon, 3 Aug 2020 19:46:10 +0100
Subject: [PATCH] Update src/lib/util.ts

Co-authored-by: Ingvar Stepanyan <rreverser@google.com>
---
 src/lib/util.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/lib/util.ts b/src/lib/util.ts
index 66461a88..1464635e 100644
--- a/src/lib/util.ts
+++ b/src/lib/util.ts
@@ -104,7 +104,7 @@ const magicNumberToMimeType = new Map<RegExp, string>([
   [/^II*/, 'image/tiff'],
   [/^MM\x00*/, 'image/tiff'],
   [/^RIFF....WEBPVP8[LX ]/, 'image/webp'],
-  [/^\x00\x00\x00\x20\x66\x74\x79\x70\x61\x76\x69\x66\x00\x00\x00\x00/, 'image/avif'],
+  [/^\x00\x00\x00 ftypavif\x00\x00\x00\x00/, 'image/avif'],
 ]);
 
 export async function sniffMimeType(blob: Blob): Promise<string> {