diff --git a/apps/web/src/pages/generate/hooks/useCanvasPlayer.ts b/apps/web/src/pages/generate/hooks/useCanvasPlayer.ts
index a8d3a4000..88fe2d1b1 100644
--- a/apps/web/src/pages/generate/hooks/useCanvasPlayer.ts
+++ b/apps/web/src/pages/generate/hooks/useCanvasPlayer.ts
@@ -599,9 +599,20 @@ export function useCanvasPlayer(
         })
 
         try {
-          await decoder.decode(chunk) // 修复：await 捕获异步错误
+          await Promise.race([
+            decoder.decode(chunk),
+            new Promise((_, reject) =>
+              setTimeout(() => reject(new Error("decode chunk timeout 3s")), 3000),
+            ),
+          ])
           decodedCount++
         } catch (e) {
+          if (e instanceof Error && e.message === "decode chunk timeout 3s") {
+            console.warn(
+              `[useCanvasPlayer] Decode chunk timeout at sample ${decodedCount}, aborting segment ${meta.assetId}`,
+            )
+            break
+          }
           decodeErrors++
           console.warn(`[useCanvasPlayer] Decode chunk error (${decodeErrors}):`, e)
           // 连续 3 次解码失败，放弃当前片段并报告错误