feat：FFmpeg单线程

package.json

@@ -322,7 +322,7 @@
     "FFmpegThumb": {
         "name": "FFmpeg缩略图",
         "description": "TheMovieDb没有背景图片时使用FFmpeg截取视频文件缩略图",
-        "version": "1.0",
+        "version": "1.1",
         "icon": "ffmpeg.png",
         "author": "jxxghp",
         "level": 1

plugins/ffmpegthumb/__init__.py

@@ -1,3 +1,4 @@
+import threading
 from datetime import datetime, timedelta
 from pathlib import Path
 from threading import Event as ThreadEvent
@@ -16,6 +17,8 @@ from app.schemas import TransferInfo
 from app.schemas.types import EventType
 from app.utils.system import SystemUtils
 
+ffmpeg_lock = threading.Lock()
+
 
 class FFmpegThumb(_PluginBase):
     # 插件名称
@@ -25,7 +28,7 @@ class FFmpegThumb(_PluginBase):
     # 插件图标
     plugin_icon = "ffmpeg.png"
     # 插件版本
-    plugin_version = "1.0"
+    plugin_version = "1.1"
     # 插件作者
     plugin_author = "jxxghp"
     # 作者主页
@@ -328,18 +331,20 @@ class FFmpegThumb(_PluginBase):
         """
         处理一个文件
         """
-        try:
-            thumb_path = file_path.with_name(file_path.stem + "-thumb.jpg")
-            if thumb_path.exists():
-                logger.info(f"缩略图已存在：{thumb_path}")
-                return
-            if FfmpegHelper.get_thumb(video_path=str(file_path),
-                                      image_path=str(thumb_path), frames=self._timeline):
-                logger.info(f"{file_path} 缩略图已生成：{thumb_path}")
-            else:
-                logger.warn(f"{file_path} 缩略图生成失败！")
-        except Exception as err:
-            logger.error(f"FFmpeg处理文件 {file_path} 时发生错误：{str(err)}")
+        # 单线程处理
+        with ffmpeg_lock:
+            try:
+                thumb_path = file_path.with_name(file_path.stem + "-thumb.jpg")
+                if thumb_path.exists():
+                    logger.info(f"缩略图已存在：{thumb_path}")
+                    return
+                if FfmpegHelper.get_thumb(video_path=str(file_path),
+                                          image_path=str(thumb_path), frames=self._timeline):
+                    logger.info(f"{file_path} 缩略图已生成：{thumb_path}")
+                else:
+                    logger.warn(f"{file_path} 缩略图生成失败！")
+            except Exception as err:
+                logger.error(f"FFmpeg处理文件 {file_path} 时发生错误：{str(err)}")
 
     def stop_service(self):
         """