Merge pull request #244 from ynput/bugfix/jpeg-detection-fix

Chore: Fix jpeg detection fix

Author: iLLiCiTiT

ayon_api/utils.py

@@ -855,11 +855,13 @@ def _get_media_mime_type_for_content_base(content: bytes) -> Optional[str]:
     if content[0:4] == b"\211PNG":
         return "image/png"
 
-    # JPEG, JFIF or Exif
-    if (
-        content[0:4] == b"\xff\xd8\xff\xdb"
-        or content[6:10] in (b"JFIF", b"Exif")
-    ):
+    # JPEG
+    # - [0:2] is constant b"\xff\xd8"
+    #   (ref. https://www.file-recovery.com/jpg-signature-format.htm)
+    # - [2:4] Marker identifier b"\xff{?}"
+    #   (ref. https://www.disktuna.com/list-of-jpeg-markers/)
+    # NOTE: File ends with b"\xff\xd9"
+    if content[0:3] == b"\xff\xd8\xff":
         return "image/jpeg"
 
     # Webp