From c7c81aada830832a72c1a110e16d5c6a0802fb4c Mon Sep 17 00:00:00 2001
From: Nymiro <134183112+Bai-Mirror@users.noreply.github.com>
Date: Mon, 20 Oct 2025 20:51:54 +1300
Subject: [PATCH] Fix ItemInfoEntryBox builder order

---
 heic_types.py | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/heic_types.py b/heic_types.py
index e511121..d75bdac 100644
--- a/heic_types.py
+++ b/heic_types.py
@@ -274,12 +274,10 @@ class ItemInfoEntryBox(FullBox):
             content.write(item_name_bytes_to_write)
             
         elif self.version == 2:
-            # --- START FIX 4 (Builder) ---
-            # 保持为苹果顺序 (ID, Type, ProtIdx) 以正确 *写入* 兼容文件
             content.write(struct.pack('>I', self.item_id))
-            content.write(self.item_type.encode('ascii').ljust(4, b'\x00'))
             content.write(struct.pack('>H', self.item_protection_index))
-            # --- END FIX 4 ---
+            # item_type 必须是 4 字节的 4CC，若不足则以 NUL 填充
+            content.write(self.item_type.encode('ascii', errors='ignore')[:4].ljust(4, b'\x00'))
             content.write(item_name_bytes_to_write)
             
         elif self.version == 3: