fix: auto-fix code issues (cron)

- 修复重复导入/字段
- 修复异常处理
- 修复PEP8格式问题
- 添加类型注解
- 修复缺失的urllib.parse导入

backend/multimodal_processor.py

@@ -35,6 +35,7 @@ try:
 except ImportError:
     FFMPEG_AVAILABLE = False
 
+
 @dataclass
 class VideoFrame:
     """视频关键帧数据类"""
@@ -52,6 +53,7 @@ class VideoFrame:
         if self.entities_detected is None:
             self.entities_detected = []
 
+
 @dataclass
 class VideoInfo:
     """视频信息数据类"""
@@ -75,6 +77,7 @@ class VideoInfo:
         if self.metadata is None:
             self.metadata = {}
 
+
 @dataclass
 class VideoProcessingResult:
     """视频处理结果"""
@@ -87,6 +90,7 @@ class VideoProcessingResult:
     success: bool
     error_message: str = ""
 
+
 class MultimodalProcessor:
     """多模态处理器 - 处理视频文件"""
 
@@ -122,8 +126,12 @@ class MultimodalProcessor:
         try:
             if FFMPEG_AVAILABLE:
                 probe = ffmpeg.probe(video_path)
-                video_stream = next((s for s in probe["streams"] if s["codec_type"] == "video"), None)
-                audio_stream = next((s for s in probe["streams"] if s["codec_type"] == "audio"), None)
+                video_stream = next(
+                    (s for s in probe["streams"] if s["codec_type"] == "video"), None
+                )
+                audio_stream = next(
+                    (s for s in probe["streams"] if s["codec_type"] == "audio"), None
+                )
 
                 if video_stream:
                     return {
@@ -154,7 +162,9 @@ class MultimodalProcessor:
                     return {
                         "duration": float(data["format"].get("duration", 0)),
                         "width": int(data["streams"][0].get("width", 0)) if data["streams"] else 0,
-                        "height": int(data["streams"][0].get("height", 0)) if data["streams"] else 0,
+                        "height": int(data["streams"][0].get("height", 0))
+                        if data["streams"]
+                        else 0,
                         "fps": 30.0,  # 默认值
                         "has_audio": len(data["streams"]) > 1,
                         "bitrate": int(data["format"].get("bit_rate", 0)),
@@ -246,7 +256,9 @@ class MultimodalProcessor:
 
                     if frame_number % frame_interval_frames == 0:
                         timestamp = frame_number / fps
-                        frame_path = os.path.join(video_frames_dir, f"frame_{frame_number:06d}_{timestamp:.2f}.jpg")
+                        frame_path = os.path.join(
+                            video_frames_dir, f"frame_{frame_number:06d}_{timestamp:.2f}.jpg"
+                        )
                         cv2.imwrite(frame_path, frame)
                         frame_paths.append(frame_path)
 
@@ -258,12 +270,26 @@ class MultimodalProcessor:
                 Path(video_path).stem
                 output_pattern = os.path.join(video_frames_dir, "frame_%06d_%t.jpg")
 
-                cmd = ["ffmpeg", "-i", video_path, "-vf", f"fps=1/{interval}", "-frame_pts", "1", "-y", output_pattern]
+                cmd = [
+                    "ffmpeg",
+                    "-i",
+                    video_path,
+                    "-vf",
+                    f"fps=1/{interval}",
+                    "-frame_pts",
+                    "1",
+                    "-y",
+                    output_pattern,
+                ]
                 subprocess.run(cmd, check=True, capture_output=True)
 
                 # 获取生成的帧文件列表
                 frame_paths = sorted(
-                    [os.path.join(video_frames_dir, f) for f in os.listdir(video_frames_dir) if f.startswith("frame_")]
+                    [
+                        os.path.join(video_frames_dir, f)
+                        for f in os.listdir(video_frames_dir)
+                        if f.startswith("frame_")
+                    ]
                 )
         except Exception as e:
             print(f"Error extracting keyframes: {e}")
@@ -409,7 +435,9 @@ class MultimodalProcessor:
         if video_id:
             # 清理特定视频的文件
             for dir_path in [self.video_dir, self.frames_dir, self.audio_dir]:
-                target_dir = os.path.join(dir_path, video_id) if dir_path == self.frames_dir else dir_path
+                target_dir = (
+                    os.path.join(dir_path, video_id) if dir_path == self.frames_dir else dir_path
+                )
                 if os.path.exists(target_dir):
                     for f in os.listdir(target_dir):
                         if video_id in f:
@@ -421,9 +449,11 @@ class MultimodalProcessor:
                     shutil.rmtree(dir_path)
                     os.makedirs(dir_path, exist_ok=True)
 
+
 # Singleton instance
 _multimodal_processor = None
 
+
 def get_multimodal_processor(temp_dir: str = None, frame_interval: int = 5) -> MultimodalProcessor:
     """获取多模态处理器单例"""
     global _multimodal_processor