diff --git a/apps/web/src/pages/generate/hooks/useCanvasPlayer.ts b/apps/web/src/pages/generate/hooks/useCanvasPlayer.ts
index b7862e664..41d35fe13 100644
--- a/apps/web/src/pages/generate/hooks/useCanvasPlayer.ts
+++ b/apps/web/src/pages/generate/hooks/useCanvasPlayer.ts
@@ -44,7 +44,7 @@ function findCodecConfig(buffer: ArrayBuffer, start: number, end: number): Array
         // 子 box 从 entryOffset + 8 + 6 + 2 + 16 + 2 + 2 + 2 + 2 + 4 + 2 + 2 + 2 + 2 = entryOffset + 78
         // 更简单的做法：扫描 entry 内的子 box
         const entryEnd = entryOffset + entrySize
-        const subBoxStart = entryOffset + 8 + 70 // 跳过 header(8) + visual sample entry fixed fields(70)
+        const subBoxStart = entryOffset + 8 + 68 // VisualSampleEntry 固定字段共 68 字节
         const result = findCodecConfig(buffer, subBoxStart, entryEnd)
         if (result) return result
         entryOffset += entrySize
@@ -431,7 +431,7 @@ export function useCanvasPlayer(
       ctx.textAlign = "center"
 
       // 按 "/" 分割为多行（"/" 作为手动换行符）
-      const lines = title.text.split(/[/／]/)
+      const lines = title.text.split(/[/／⁄∕]/)
       const lineHeight = fontSize * 1.3
       const totalHeight = lines.length * lineHeight