style: normalize python formatting gates

apps/worker/video_processing/processor.py

@@ -1,6 +1,7 @@
 """
 视频处理核心类
 """
+
 import os
 import tempfile
 from dataclasses import dataclass
@@ -13,6 +14,7 @@ import ffmpeg
 @dataclass
 class VideoResult:
     """视频生成结果"""
+
     output_path: str
     thumbnail_path: str
     duration: float
@@ -24,16 +26,16 @@ class VideoResult:
 
 class VideoProcessor:
     """视频处理器"""
-    
+
     def __init__(self, temp_dir: str = None):
         """
         初始化视频处理器
-        
+
         Args:
             temp_dir: 临时文件目录，默认使用系统临时目录
         """
         self.temp_dir = temp_dir or tempfile.gettempdir()
-    
+
     def concatenate_videos(
         self,
         input_paths: List[str],
@@ -43,22 +45,22 @@ class VideoProcessor:
     ) -> VideoResult:
         """
         拼接多个视频
-        
+
         Args:
             input_paths: 输入视频路径列表
             output_path: 输出视频路径
             resolution: 输出分辨率 (width, height)
             fps: 输出帧率
-        
+
         Returns:
             VideoResult: 生成结果
         """
         if not input_paths:
             raise ValueError("input_paths cannot be empty")
-        
+
         # 确保输出目录存在
         os.makedirs(os.path.dirname(output_path), exist_ok=True)
-        
+
         try:
             # 创建临时文件列表
             concat_file = os.path.join(self.temp_dir, f"concat_{os.getpid()}.txt")
@@ -66,12 +68,11 @@ class VideoProcessor:
                 for path in input_paths:
                     # FFmpeg concat demuxer 格式
                     f.write(f"file '{os.path.abspath(path)}'\n")
-            
+
             # 使用 FFmpeg 拼接视频
             width, height = resolution
             (
-                ffmpeg
-                .input(concat_file, format="concat", safe=0)
+                ffmpeg.input(concat_file, format="concat", safe=0)
                 .output(
                     output_path,
                     vcodec="libx264",
@@ -84,28 +85,28 @@ class VideoProcessor:
                 .overwrite_output()
                 .run(capture_stdout=True, capture_stderr=True)
             )
-            
+
             # 清理临时文件
             os.remove(concat_file)
-            
+
             # 获取视频元数据
             probe = ffmpeg.probe(output_path)
             video_info = next(s for s in probe["streams"] if s["codec_type"] == "video")
-            
+
             duration = float(probe["format"]["duration"])
             width = int(video_info["width"])
             height = int(video_info["height"])
-            
+
             # 计算帧率
             fps_str = video_info.get("r_frame_rate", "25/1")
             fps_parts = fps_str.split("/")
             fps_value = float(fps_parts[0]) / float(fps_parts[1]) if len(fps_parts) == 2 else float(fps_parts[0])
-            
+
             file_size = os.path.getsize(output_path)
-            
+
             # 生成缩略图
             thumbnail_path = self.generate_thumbnail(output_path)
-            
+
             return VideoResult(
                 output_path=output_path,
                 thumbnail_path=thumbnail_path,
@@ -115,11 +116,11 @@ class VideoProcessor:
                 fps=fps_value,
                 file_size=file_size,
             )
-        
+
         except ffmpeg.Error as e:
             stderr = e.stderr.decode() if e.stderr else ""
             raise RuntimeError(f"FFmpeg error: {stderr}") from e
-    
+
     def generate_thumbnail(
         self,
         video_path: str,
@@ -128,55 +129,54 @@ class VideoProcessor:
     ) -> str:
         """
         生成视频缩略图
-        
+
         Args:
             video_path: 视频文件路径
             timestamp: 截图时间点（秒）
             output_path: 输出路径，默认为视频路径 + .jpg
-        
+
         Returns:
             缩略图路径
         """
         if output_path is None:
             output_path = f"{os.path.splitext(video_path)[0]}_thumb.jpg"
-        
+
         try:
             (
-                ffmpeg
-                .input(video_path, ss=timestamp)
+                ffmpeg.input(video_path, ss=timestamp)
                 .output(output_path, vframes=1, format="image2", vcodec="mjpeg")
                 .overwrite_output()
                 .run(capture_stdout=True, capture_stderr=True)
             )
-            
+
             return output_path
-        
+
         except ffmpeg.Error as e:
             stderr = e.stderr.decode() if e.stderr else ""
             raise RuntimeError(f"FFmpeg thumbnail error: {stderr}") from e
-    
+
     def get_video_info(self, video_path: str) -> dict:
         """
         获取视频信息
-        
+
         Args:
             video_path: 视频文件路径
-        
+
         Returns:
             视频元数据字典
         """
         try:
             probe = ffmpeg.probe(video_path)
             video_info = next(s for s in probe["streams"] if s["codec_type"] == "video")
-            
+
             duration = float(probe["format"]["duration"])
             width = int(video_info["width"])
             height = int(video_info["height"])
-            
+
             fps_str = video_info.get("r_frame_rate", "25/1")
             fps_parts = fps_str.split("/")
             fps_value = float(fps_parts[0]) / float(fps_parts[1]) if len(fps_parts) == 2 else float(fps_parts[0])
-            
+
             return {
                 "duration": duration,
                 "width": width,
@@ -185,7 +185,7 @@ class VideoProcessor:
                 "codec": video_info.get("codec_name"),
                 "bitrate": int(probe["format"].get("bit_rate", 0)),
             }
-        
+
         except ffmpeg.Error as e:
             stderr = e.stderr.decode() if e.stderr else ""
             raise RuntimeError(f"FFmpeg probe error: {stderr}") from e