From 04203e7466188abd426130b61ef0ca0b7d437805 Mon Sep 17 00:00:00 2001
From: itouakirai <85016486+itouakirai@users.noreply.github.com>
Date: Wed, 22 Oct 2025 05:22:34 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E5=BD=93=E6=B2=A1=E6=9C=89=E8=A6=81?=
 =?UTF-8?q?=E5=B5=8C=E5=85=A5=E7=9A=84cover=E6=97=B6=EF=BC=8C=E9=83=A8?=
 =?UTF-8?q?=E5=88=86=E6=92=AD=E6=94=BE=E5=99=A8=E6=97=A0=E6=B3=95=E6=92=AD?=
 =?UTF-8?q?=E6=94=BE?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 write.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/write.go b/write.go
index 92d1753..798ed98 100644
--- a/write.go
+++ b/write.go
@@ -748,6 +748,9 @@ func writePics(f *os.File, pics []*MP4Picture) error {
 		}
 		boxSize += int32(dataSize + 16)
 	}
+	if boxSize == 8 {
+		return nil
+	}
 
 	boxSizeBytes := putI32BE(boxSize)
 	_, err := f.Write(boxSizeBytes)
@@ -1135,3 +1138,4 @@ func (mp4 *MP4) actualWrite(tags *MP4Tags, _delStrings []string) error {
 	mp4.size = m.size
 	return nil
 }
+