refactor

config/settings.py

@@ -17,6 +17,14 @@ class FFmpegConfig:
     re_encode_video_args: Optional[List[str]] = None
     re_encode_encoder_args: Optional[List[str]] = None
     
+    # 新增配置选项，消除硬编码
+    max_download_workers: int = 8
+    progress_args: List[str] = None
+    loglevel_args: List[str] = None
+    null_audio_args: List[str] = None
+    overlay_scale_mode: str = "scale2ref"  # 新版本使用scale2ref，旧版本使用scale
+    amix_args: List[str] = None
+    
     @classmethod
     def from_env(cls) -> 'FFmpegConfig':
         encoder_args = os.getenv("ENCODER_ARGS", "-c:v h264").split(" ")
@@ -32,6 +40,13 @@ class FFmpegConfig:
         if os.getenv("RE_ENCODE_ENCODER_ARGS"):
             re_encode_encoder_args = os.getenv("RE_ENCODE_ENCODER_ARGS").split(" ")
             
+        # 新增配置项的默认值
+        progress_args = ["-progress", "-"]
+        loglevel_args = ["-loglevel", "error"] 
+        null_audio_args = ["-f", "lavfi", "-i", "anullsrc=cl=stereo:r=48000"]
+        amix_args = ["amix=duration=shortest:dropout_transition=0:normalize=0"]
+        overlay_scale_mode = "scale" if bool(os.getenv("OLD_FFMPEG", False)) else "scale2ref"
+        
         return cls(
             encoder_args=encoder_args,
             video_args=video_args,
@@ -39,7 +54,13 @@ class FFmpegConfig:
             default_args=default_args,
             old_ffmpeg=bool(os.getenv("OLD_FFMPEG", False)),
             re_encode_video_args=re_encode_video_args,
-            re_encode_encoder_args=re_encode_encoder_args
+            re_encode_encoder_args=re_encode_encoder_args,
+            max_download_workers=int(os.getenv("MAX_DOWNLOAD_WORKERS", "8")),
+            progress_args=progress_args,
+            loglevel_args=loglevel_args,
+            null_audio_args=null_audio_args,
+            overlay_scale_mode=overlay_scale_mode,
+            amix_args=amix_args
         )
 
 @dataclass