From ce8854404b2d98efae698d0db721f95ab6befa69 Mon Sep 17 00:00:00 2001
From: Jerry Yan <792602257@qq.com>
Date: Fri, 12 Sep 2025 14:54:01 +0800
Subject: [PATCH] =?UTF-8?q?fix(entity):=20=E4=BF=AE=E5=A4=8D=E8=A7=86?=
 =?UTF-8?q?=E9=A2=91=E6=85=A2=E6=94=BE=E6=97=B6=20PTS=20=E5=86=B2=E7=AA=81?=
 =?UTF-8?q?=E9=97=AE=E9=A2=98?=
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- 修改视频变速功能，通过改变帧率实现慢放效果
-避免使用 setpts滤镜导致的 PTS 冲突
- 优化代码结构，提高可读性和可维护性
---
 entity/ffmpeg.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/entity/ffmpeg.py b/entity/ffmpeg.py
index 3e864a0..7471be4 100644
--- a/entity/ffmpeg.py
+++ b/entity/ffmpeg.py
@@ -271,9 +271,10 @@ class FfmpegTask(object):
                     if param == '':
                         param = "1"
                     if param != "1":
-                        # 视频变速
+                        # 视频变速：通过改变帧率实现，避免PTS冲突
                         effect_index += 1
-                        filter_args.append(f"{video_output_str}setpts={param}*PTS[v_eff{effect_index}]")
+                        new_fps = self.frame_rate / float(param)
+                        filter_args.append(f"{video_output_str}fps={new_fps}[v_eff{effect_index}]")
                         video_output_str = f"[v_eff{effect_index}]"
                 elif effect.startswith("zoom:"):
                     param = effect.split(":", 2)[1]