Refine seller store implementation

server/config/settings.py

@@ -53,12 +53,35 @@ class Settings(BaseSettings):
     # 单张图片在后端需要解码/加水印，限制单文件可避免一次请求耗尽内存。
     image_upload_max_bytes: int = 20 * 1024 * 1024
     image_download_max_bytes: int = 20 * 1024 * 1024
+    # 图片解码前依据真实宽高限制像素，避免超大图耗尽 Pillow/水印处理内存。
+    image_max_pixels: int = 40_000_000
+    # 远程图片下载防护：连接/读写/总耗时分别受控；重定向逐跳校验目标地址。
+    image_download_connect_timeout: float = 10.0
+    image_download_read_timeout: float = 30.0
+    image_download_total_timeout: float = 60.0
+    image_download_max_redirects: int = 3
     collection_max_images: int = 100
     export_max_images: int = 50
     export_zip_max_bytes: int = 200 * 1024 * 1024
     # ZIP 超过该值自动落临时磁盘，不继续占用进程内存。
     export_zip_memory_threshold_bytes: int = 2 * 1024 * 1024
 
+    # ── 商品轮播视频（FFmpeg）──
+    # Ubuntu 默认安装包会提供同名命令；容器或特殊路径可在 .env 覆盖。
+    video_ffmpeg_path: str = "ffmpeg"
+    video_ffprobe_path: str = "ffprobe"
+    video_width: int = 810
+    video_height: int = 1080
+    video_fps: int = 30
+    video_transition_seconds: float = 0.35
+    video_crf: int = 22
+    video_max_rate: str = "3M"
+    video_buffer_size: str = "6M"
+    video_max_bytes: int = 45 * 1024 * 1024
+    video_max_duration_seconds: int = 180
+    video_render_timeout_seconds: int = 120
+    background_job_lease_seconds: int = 300
+
     # ── V2.1 套图生图（provider 路由与 image-suite-studio 一致）──
     image_provider: str = "doubao"      # 未知模型时的兜底 provider：doubao | tongyi | rightapi
     request_timeout: int = 300          # 单张生图请求超时（秒）