优化住流程和添加复刻视频页面

core/backend/apps/ai/services.py

@@ -894,6 +894,20 @@ class VideoSubmissionStateUnknown(ProviderOutcomeUnknownError):
     """视频提交可能已到达供应商但未拿到可靠任务 ID；禁止自动重提。"""
 
 
+NO_EMBEDDED_CAPTIONS_REQUIREMENT = (
+    "【成片硬性规则】画面不得出现字幕、台词字幕、花字、标题、价格贴片、UI 文字或其他后期文字叠加；"
+    "只保留商品包装上参考图中原有的真实物理文字与标识。旁白和环境音可以保留，但不要把声音转成画面文字。"
+)
+
+
+def enforce_no_embedded_captions(prompt: str) -> str:
+    """所有视频入口最终汇入这里，避免某个入口漏传“无字幕”导致模型自行加花字。"""
+    base = (prompt or "").strip()
+    if NO_EMBEDDED_CAPTIONS_REQUIREMENT in base:
+        return base
+    return f"{base}\n{NO_EMBEDDED_CAPTIONS_REQUIREMENT}".strip()
+
+
 def execute_routed_video_submit(
     *,
     task: AITask,
@@ -913,6 +927,7 @@ def execute_routed_video_submit(
     """异步视频只路由“提交”阶段；拿到 Provider 任务 ID 后固定该实际模型轮询。"""
     from apps.billing.pricing import quote_video_estimate
 
+    prompt = enforce_no_embedded_captions(prompt)
     references = list(reference_images or [])
     routed_content_items = list(content_items) if content_items is not None else None
     pricing_refs = list(pricing_references or [])
@@ -2693,7 +2708,7 @@ def build_storyboard_frame_prompt(project, segment, extra_prompt: str = "") -> s
         补充=(("\n" + extra_prompt.strip()) if extra_prompt else ""),
     )
     cleaned = "\n".join(line for line in rendered.split("\n") if line.strip())
-    return _apply_storyboard_output_ratio(cleaned, project)
+    return enforce_no_embedded_captions(_apply_storyboard_output_ratio(cleaned, project))
 
 
 def build_video_segment_prompt(project, video_segment, scene, refs, user_prompt: str = "") -> str:
@@ -2729,7 +2744,7 @@ def build_video_segment_prompt(project, video_segment, scene, refs, user_prompt:
         脚本=(script_text or f"第 {video_segment.sort_order + 1} 段"),
         时长=video_segment.target_duration_seconds,
     )
-    return "\n".join(line for line in rendered.split("\n") if line.strip())
+    return enforce_no_embedded_captions("\n".join(line for line in rendered.split("\n") if line.strip()))
 
 
 def ensure_storyboard_shots(project) -> list:
@@ -2904,7 +2919,7 @@ def build_storyboard_frame_prompt_refs(project, segment, refs: list[dict], extra
         补充=(("\n" + extra_prompt.strip()) if extra_prompt else ""),
     )
     cleaned = "\n".join(line for line in rendered.split("\n") if line.strip())
-    return _apply_storyboard_output_ratio(cleaned, project)
+    return enforce_no_embedded_captions(_apply_storyboard_output_ratio(cleaned, project))
 
 
 def _is_transient_error(exc: Exception) -> bool: