完成视频复刻和优化

core/backend/apps/ai/free_video.py

@@ -31,6 +31,7 @@ from apps.billing.services.ledger import charge_reserved_credit, release_credit,
 from .models import AITask, ModelConfig
 from .providers.volcano import VolcanoArkProvider
 from .generation_errors import classify_generation_error, public_error_for_task
+from .media_probe import REF_DURATION_MAX
 from .video_errors import parse_provider_error
 from .video_pricing import get_resolution
 
@@ -319,7 +320,7 @@ def build_content_items(*, team, prompt: str, mode: str, references: list) -> di
         raise ValueError(f"参考音频最多 3 条，当前 {audio_n} 条，请减少后重试")
     if audio_n > 0 and image_n + video_n == 0:
         raise ValueError("音频不能单独作为参考素材，请同时提供参考图片或视频")
-    if video_duration_total > 15:
+    if video_duration_total > REF_DURATION_MAX:
         raise ValueError("参考视频总时长不能超过 15 秒，请缩短后重试")
 
     # @label 替换:按 label 长度降序,防子串吞噬
@@ -409,6 +410,7 @@ def submit_free_video(*, team, user, params: dict) -> AITask:
     """提交一条自由创作视频。校验/估价/预留在前(失败不留半套),火山调用在事务外。
     创建失败不抛:返回 FAILED 任务(带友好中文错误),前端渲染失败卡。校验类错误抛 ValueError → 400。"""
     prompt = str(params.get("prompt") or "").strip()
+    feature = str(params.get("feature") or "free_video").strip() or "free_video"
     mode = str(params.get("mode") or "universal")
     model_name = str(params.get("model") or HIGH_RES_MODEL)
     aspect_ratio = str(params.get("aspect_ratio") or "16:9")
@@ -486,7 +488,7 @@ def submit_free_video(*, team, user, params: dict) -> AITask:
     reserve_amount = video_reserve_amount(quote.points)
 
     request_payload = {
-        "feature": "free_video",
+        "feature": feature,
         "mode": mode,
         "model": model_name,
         "endpoint": model_config.endpoint,
@@ -505,6 +507,13 @@ def submit_free_video(*, team, user, params: dict) -> AITask:
         "references": built["snapshots"],
         "model_routing_v1": True,
     }
+    extra = params.get("extra_payload")
+    if isinstance(extra, dict):
+        protected = set(request_payload)
+        for key, value in extra.items():
+            if key in protected or value in (None, ""):
+                continue
+            request_payload[key] = value
 
     # 建任务 + 预留同一事务:余额不足/限额拦截时回滚任务行,不留半套
     with transaction.atomic():
@@ -546,7 +555,7 @@ def submit_free_video(*, team, user, params: dict) -> AITask:
             generate_audio=generate_audio,
             seed=seed if seed != -1 else None,
             search_mode=search_mode,
-            request_summary={"feature": "free_video", "mode": mode},
+            request_summary={"feature": feature, "mode": mode},
         )
         response, provider_task_id = routed.value
         # execute_model_call 以原子 F 表达式累计实际尝试的平台成本；刷新内存对象，
@@ -625,7 +634,7 @@ def _notify_failure(task: AITask, *, raw: str, hint: str) -> None:
         task=task,
         project=None,
         recipient=task.created_by,
-        stage_label="自由创作视频",
+        stage_label="视频复刻" if (task.request_payload or {}).get("feature") == "video_replace" else "自由创作视频",
         raw=raw,
         hint=hint,
     )
@@ -643,19 +652,27 @@ def _store_free_video_media(*, task: AITask, media: str) -> Asset:
     asset_id = uuid.uuid4()
     object_key = f"teams/{task.team_id}/free-create/{asset_id}.mp4"
     stored = TosStorage().upload_fileobj(fileobj=fileobj, object_key=object_key, content_type=content_type)
-    prompt = (task.request_payload or {}).get("prompt") or ""
+    payload = task.request_payload or {}
+    prompt = payload.get("prompt") or ""
+    feature = payload.get("feature") or "free_video"
+    subject = str(payload.get("subject_name") or "").strip()
+    if feature == "video_replace":
+        mode_label = "角色复刻" if payload.get("replace_mode") == "character" else "商品复刻"
+        asset_name = f"{subject}{mode_label}" if subject else mode_label
+    else:
+        asset_name = prompt[:255] or "自由创作视频"
     asset = Asset.objects.create(
         id=asset_id,
         team=task.team,
         created_by=task.created_by,
         # Asset.name 是通用资产字段，受 255 字符上限约束；完整显示标题由资产接口从
         # 关联任务的 request_payload.prompt 派生，避免再出现 50 字符业务截断。
-        name=(prompt[:255] or "自由创作视频"),
+        name=asset_name[:255],
         asset_type=Asset.Type.VIDEO,
         source=Asset.Source.AI_GENERATED,
         category=Asset.Category.FREE_CREATE,
         origin_task=task,
-        metadata={"feature": "free_video"},
+        metadata={"feature": feature},
     )
     AssetFile.objects.create(
         asset=asset,
@@ -892,6 +909,7 @@ def serialize_free_video_task(task: AITask, *, include_deleted_assets: bool = Fa
         "status": task.status,
         "mode": payload.get("mode") or "universal",
         "model": payload.get("model") or "",
+        "feature": payload.get("feature") or "free_video",
         "prompt": payload.get("prompt") or "",
         "aspect_ratio": payload.get("aspect_ratio") or "16:9",
         "resolution": payload.get("resolution") or "720p",