From b523f8a6bd83ac826e0fee12a073f8c3f9f828e3 Mon Sep 17 00:00:00 2001
From: xiaoxia <xiaoxia@xiaoxiajianji.com>
Date: Thu, 13 Aug 2026 00:24:02 +0800
Subject: [PATCH] =?UTF-8?q?perf(#1341):=20=E5=B0=81=E9=9D=A2=E7=94=9F?=
 =?UTF-8?q?=E6=88=90=E6=94=B9=E7=94=A8=20TimeInterval=20=E7=AD=96=E7=95=A5?=
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- 从 SceneChange 改为 TimeInterval 策略
- 原因：SceneChange 对高分辨率视频易 OOM，TimeInterval 更稳定
- 保持 max_frames=3，确保封面质量

预期效果：
- 避免 OOM 错误
- 加快处理速度（TimeInterval 无需复杂场景检测）
- 提高稳定性
---
 packages/shared/ai_service.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/shared/ai_service.py b/packages/shared/ai_service.py
index 637053eb7..f54860a2c 100755
--- a/packages/shared/ai_service.py
+++ b/packages/shared/ai_service.py
@@ -402,7 +402,7 @@ def _call_ai_cover_service(
                 logger.info("调用 MediaKit 抽帧: plan_id=%s video=%s", plan_id, primary_video_url[:80])
                 frames = client.extract_frames(
                     video_url=primary_video_url,
-                    strategy="SceneChange",  # 自动识别画面变化，选最佳帧
+                    strategy="TimeInterval",  # 按固定时间间隔，稳定性好，不易 OOM
                     max_frames=3,  # 减少到 3 帧，平衡速度和质量
                     poll_interval=2.0,  # 缩短轮询间隔
                     max_poll_attempts=60,  # 120秒超时
-- 
2.54.0