From 484b6cf209474860661dc231fd2455c4a2661ef7 Mon Sep 17 00:00:00 2001
From: Eric Lindvall <eric@5stops.com>
Date: Wed, 15 Jan 2025 12:06:14 -0800
Subject: [PATCH] fix: potential overflow in size check for stco

---
 mp4/stco.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mp4/stco.go b/mp4/stco.go
index 1319846a..45a26e30 100644
--- a/mp4/stco.go
+++ b/mp4/stco.go
@@ -62,7 +62,7 @@ func (b *StcoBox) Size() uint64 {
 
 // expectedSize - calculate size for a given entry count
 func (b *StcoBox) expectedSize(entryCount uint32) uint64 {
-	return uint64(boxHeaderSize + 8 + int(entryCount)*4) // 8 = version + flags(4) + entryCount(4), 4 bytes per offset
+	return uint64(boxHeaderSize + 8 + uint64(entryCount)*4) // 8 = version + flags(4) + entryCount(4), 4 bytes per offset
 }
 
 // Encode - write box to w