diff --git a/apps/api/app/api/routes/generation_cover.py b/apps/api/app/api/routes/generation_cover.py
index 658189880..c147c0f93 100644
--- a/apps/api/app/api/routes/generation_cover.py
+++ b/apps/api/app/api/routes/generation_cover.py
@@ -76,10 +76,7 @@ class GenerateCoverResponse(BaseModel):
 # ── Route ────────────────────────────────────────────────────────────────
 
 
-
-def _select_best_frame_from_snapshots(
-    snapshots: list[dict], plan_id: str
-) -> str:
+def _select_best_frame_from_snapshots(snapshots: list[dict], plan_id: str) -> str:
     """从 MediaKit 抽帧结果中，通过质量评分选出最佳帧。
 
     降级策略：cv2 不可用或评分失败时，返回第一帧。
@@ -232,7 +229,10 @@ def _persist_cover_frame(
 
 
 def _get_task_video_url(db: Session, task_id: str) -> Optional[str]:
-    """从 GenerationTask 关联的 GeneratedVideo 中获取视频 storage_key / URL."""
+    """从 GenerationTask 关联的 GeneratedVideo 中获取视频 storage_key / URL.
+
+    #2028: awaiting_cover 状态下 GeneratedVideo 尚未入库，兜底从 task.extra_meta.rendered_output.file_url 读取。
+    """
     try:
         video_repo = get_generated_video_repository(db)
         use_case = ListGeneratedVideosByTaskUseCase(video_repo)
@@ -241,6 +241,20 @@ def _get_task_video_url(db: Session, task_id: str) -> Optional[str]:
             return getattr(videos[0], "file_url", "") or ""
     except Exception:
         logger.warning("[封面生成] 获取任务视频失败: task_id=%s", task_id, exc_info=True)
+    # awaiting_cover 兜底：从 extra_meta.rendered_output 取
+    try:
+        task_repo = SQLAlchemyGenerationTaskRepository(db)
+        task = task_repo.get(task_id)
+        if task is not None:
+            _status = task.status.value if hasattr(task.status, "value") else str(task.status)
+            if _status == "awaiting_cover":
+                _meta = getattr(task, "extra_meta", {}) or {}
+                _ro = _meta.get("rendered_output") or {}
+                _url = _ro.get("file_url") or ""
+                if _url:
+                    return _url
+    except Exception:
+        logger.warning("[封面生成] awaiting_cover 兜底读取失败: task_id=%s", task_id, exc_info=True)
     return None
 
 
diff --git a/apps/api/app/api/routes/generation_tasks.py b/apps/api/app/api/routes/generation_tasks.py
index 1d909ca9f..efe8679c8 100755
--- a/apps/api/app/api/routes/generation_tasks.py
+++ b/apps/api/app/api/routes/generation_tasks.py
@@ -1050,17 +1050,29 @@ def finalize_generation_task(
             task_id=task_id,
             user_id=authenticated_user.user.id,
             cover_url=request.cover_url or None,
+            custom_title=(request.custom_title or "").strip() or None,
         )
     except GenerationFinalizeError as e:
         raise HTTPException(status_code=e.status_code, detail=str(e)) from e
 
-    download_url = storage_service.get_download_url(video.file_url, expires_seconds=86400)
+    try:
+        download_url = storage_service.get_download_url(video.file_url, expires_seconds=86400)
+    except Exception:
+        download_url = video.file_url
     return FinalizeGenerationResponse(
         video_id=video.id,
+        project_id=getattr(video, "project_id", "") or "",
+        name=getattr(video, "name", "") or "",
+        file_size=int(getattr(video, "file_size", 0) or 0),
+        duration=float(getattr(video, "duration", 0.0) or 0.0),
+        thumbnail_url=video.thumbnail_url or "",
         cover_url=video.thumbnail_url or "",
         file_url=download_url,
+        width=int(getattr(video, "width", 0) or 0),
+        height=int(getattr(video, "height", 0) or 0),
+        fps=float(getattr(video, "fps", 0.0) or 0.0),
         status="success",
-        is_duplicate=bool(video.is_duplicate),
+        is_duplicate=bool(getattr(video, "is_duplicate", False)),
     )
 
 
@@ -1111,6 +1123,44 @@ def list_generation_results(
     for item in items:
         download_url = storage_service.get_download_url(item.file_url, expires_seconds=86400)
         responses.append(_to_generated_video_response(item, download_url=download_url))
+
+    # #2024/#2028: awaiting_cover 状态下 GeneratedVideo 尚未入库，
+    # 从 extra_meta["rendered_output"] 合成一条轻量视频响应，供前端预览与智能封面使用。
+    status_val = task.status.value if hasattr(task.status, "value") else str(task.status)
+    if not responses and status_val == "awaiting_cover":
+        _meta = getattr(task, "extra_meta", {}) or {}
+        _ro = _meta.get("rendered_output") or {}
+        _file_url = _ro.get("file_url") or ""
+        if _file_url:
+            if _file_url.startswith("http"):
+                _download = _file_url
+            else:
+                try:
+                    _download = storage_service.get_download_url(_file_url, expires_seconds=86400)
+                except Exception:
+                    _download = _file_url
+            _name = _ro.get("name") or ""
+            if not _name:
+                _name = f"generated-{task_id[:8]}"
+            responses.append(
+                GeneratedVideoResponse(
+                    id=f"preview-{task_id}",
+                    project_id=getattr(task, "project_id", "") or "",
+                    generation_task_id=task_id,
+                    name=_name,
+                    file_url=_file_url,
+                    file_size=int(_ro.get("file_size") or 0),
+                    duration=float(_ro.get("duration") or 0.0),
+                    thumbnail_url=_ro.get("thumbnail_url") or getattr(task, "cover_url", "") or "",
+                    width=int(_ro.get("width") or 0),
+                    height=int(_ro.get("height") or 0),
+                    fps=float(_ro.get("fps") or 0.0),
+                    mode=_ro.get("mode", ""),
+                    download_url=_download,
+                    created_at=getattr(task, "updated_at", None) or getattr(task, "created_at", None),
+                )
+            )
+
     return ListGeneratedVideosResponse(items=responses)
 
 
diff --git a/apps/api/app/api/routes/templates_editor/clips.py b/apps/api/app/api/routes/templates_editor/clips.py
index c3513ff08..f01c1e028 100755
--- a/apps/api/app/api/routes/templates_editor/clips.py
+++ b/apps/api/app/api/routes/templates_editor/clips.py
@@ -682,17 +682,50 @@ def create_clips_from_assets_editor(
     # 素材 metadata 中缓存的场景切换点（由后台 MediaKit SceneChange 检测写入）：
     # 有缓存时片段起点从随机镜头段中选取（不同片段来自不同镜头），无缓存回退随机起点
     asset_scene_points: dict[str, list[float]] = {}
+    invalid_asset_ids: list[str] = []
+    valid_asset_ids: list[str] = []
     for asset_id in unique_asset_ids:
         asset = asset_repo.get(asset_id)
-        if asset and hasattr(asset, "duration"):
-            asset_durations[asset_id] = float(asset.duration or 0.0)
-            # 计算 smart_match 综合评分，用于候选排序
+        if asset is None:
+            logger.warning("from-assets 素材不存在或已删除，跳过: asset_id=%s", asset_id)
+            invalid_asset_ids.append(asset_id)
+            continue
+        _dur = float(getattr(asset, "duration", 0.0) or 0.0)
+        if _dur <= 0:
+            # 素材时长缺失（刚上传/分析未完成）或为0，跳过该素材——避免按兜底时长分配无效片段。
+            # 若所有素材都无效，在下面统一抛 400。
+            logger.warning("from-assets 素材时长缺失或为0，跳过: asset_id=%s", asset_id)
+            invalid_asset_ids.append(asset_id)
+            continue
+        valid_asset_ids.append(asset_id)
+        asset_durations[asset_id] = _dur
+        # 计算 smart_match 综合评分，用于候选排序
+        try:
             smart_score, _ = score_asset(asset)
             asset_smart_scores[asset_id] = smart_score
-            # 读取场景切换点缓存（新素材未检测过时为 None，走随机起点兜底）
+        except Exception:
+            asset_smart_scores[asset_id] = 0.0
+        # 读取场景切换点缓存（新素材未检测过时为 None，走随机起点兜底）
+        try:
             cached_points = extract_scene_points_from_metadata(getattr(asset, "metadata", None))
             if cached_points:
                 asset_scene_points[asset_id] = cached_points
+        except Exception:
+            pass
+    if invalid_asset_ids:
+        logger.info(
+            "from-assets %d 个素材无效（时长缺失/不存在，已跳过）: %s",
+            len(invalid_asset_ids),
+            ",".join(invalid_asset_ids[:5]),
+        )
+    # 所有素材都无效（刚上传未分析完）→ 400 让前端稍后重试，而不是用兜底时长产生错乱片段
+    if not valid_asset_ids:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail="素材尚未完成分析，请稍后重试",
+        )
+    # 后续分配素材时只在 valid_asset_ids 里挑选
+    unique_asset_ids = valid_asset_ids
     logger.info(
         "from-assets 场景缓存命中: %d/%d 个素材有场景切换点",
         len(asset_scene_points),
diff --git a/apps/api/app/schemas/generation_task.py b/apps/api/app/schemas/generation_task.py
index 1fb2f66e3..111b3ea32 100755
--- a/apps/api/app/schemas/generation_task.py
+++ b/apps/api/app/schemas/generation_task.py
@@ -19,14 +19,23 @@ class FinalizeGenerationRequest(BaseModel):
     cover_url: str = Field(
         default="", description="用户选定的封面图片 URL；为空则使用任务默认 cover_url（自动截帧/智能封面）"
     )
+    custom_title: str = Field(default="", description="用户自定义成片标题，非空时覆盖 rendered_output.name")
 
 
 class FinalizeGenerationResponse(BaseModel):
     """finalize 响应：返回新创建的成品库视频信息。"""
 
     video_id: str = Field(description="新创建的成品视频 ID")
+    project_id: str = Field(default="", description="成品所属项目 ID")
+    name: str = Field(default="", description="成片名称")
+    file_size: int = Field(default=0, description="文件大小（字节）")
+    duration: float = Field(default=0.0, description="时长（秒）")
+    thumbnail_url: str = Field(default="", description="最终绑定的缩略图/封面 URL")
     cover_url: str = Field(default="", description="最终绑定的封面 URL")
-    file_url: str = Field(default="", description="成品视频 OSS URL")
+    file_url: str = Field(default="", description="成品视频下载 URL")
+    width: int = Field(default=0)
+    height: int = Field(default=0)
+    fps: float = Field(default=0.0)
     status: str = Field(default="success", description="success=新建成功；already_finalized=幂等返回已有记录")
     is_duplicate: bool = Field(default=False, description="是否被判定为与历史成片重复")
 
diff --git a/apps/api/app/services/generation_finalize_service.py b/apps/api/app/services/generation_finalize_service.py
index 9f2780299..8849d6554 100644
--- a/apps/api/app/services/generation_finalize_service.py
+++ b/apps/api/app/services/generation_finalize_service.py
@@ -32,7 +32,13 @@ class GenerationFinalizeService:
     def __init__(self, db: Session):
         self.db = db
 
-    def finalize_task(self, task_id: str, user_id: str, cover_url: Optional[str] = None):
+    def finalize_task(
+        self,
+        task_id: str,
+        user_id: str,
+        cover_url: Optional[str] = None,
+        custom_title: Optional[str] = None,
+    ):
         """执行 finalize：状态校验 → 幂等 → 绑定封面 → 入库 → 推进 completed。
 
         Returns:
@@ -58,9 +64,15 @@ class GenerationFinalizeService:
         existing = self.db.query(GeneratedVideoModel).filter(GeneratedVideoModel.generation_task_id == task_id).first()
         if existing is not None:
             logger.info("[finalize] 幂等命中 task=%s video=%s", task_id, existing.id)
+            _changed = False
             if cover_url and cover_url.strip() and existing.thumbnail_url != cover_url.strip():
                 existing.thumbnail_url = cover_url.strip()
                 task.cover_url = cover_url.strip()
+                _changed = True
+            if custom_title and custom_title.strip() and (getattr(existing, "name", "") or "") != custom_title.strip():
+                existing.name = custom_title.strip()
+                _changed = True
+            if _changed:
                 self.db.commit()
             if task.status.value != "completed":
                 try:
@@ -91,12 +103,23 @@ class GenerationFinalizeService:
                 task=task,
                 session=self.db,
                 effective_cover_url=effective_cover,
+                custom_name=custom_title,
             )
         except ValueError as e:
             raise GenerationFinalizeError(str(e), "RenderedOutputMissing", 400) from e
 
         video_id = result["video_id"]
 
+        # 应用自定义标题
+        if custom_title and custom_title.strip():
+            try:
+                _v = self.db.query(GeneratedVideoModel).filter(GeneratedVideoModel.id == video_id).first()
+                if _v is not None:
+                    _v.name = custom_title.strip()
+                    self.db.flush()
+            except Exception:
+                logger.warning("[finalize] 更新标题失败: video_id=%s", video_id, exc_info=True)
+
         # ── 推进任务 ─────────────────────────────────────────────
         task.mark_completed(result_count=1)
         task.cover_url = effective_cover
diff --git a/apps/web/src/api/generation/finalize.ts b/apps/web/src/api/generation/finalize.ts
index 249254cc9..0d347dcbb 100644
--- a/apps/web/src/api/generation/finalize.ts
+++ b/apps/web/src/api/generation/finalize.ts
@@ -4,14 +4,25 @@ import apiClient from "../client"
 export interface FinalizeGenerationRequest {
   /** 用户选定的封面图片 URL；为空则使用任务默认封面（自动截帧/智能封面） */
   cover_url?: string
+  /** 用户自定义成片标题，非空时覆盖 rendered_output.name */
+  custom_title?: string
 }
 
 export interface FinalizeGenerationResponse {
   video_id: string
+  project_id: string
+  name: string
+  file_size: number
+  duration: number
+  thumbnail_url: string
   cover_url: string
   file_url: string
+  width: number
+  height: number
+  fps: number
   /** success=新建成功；already_finalized=幂等返回已有记录 */
   status: string
+  is_duplicate: boolean
 }
 
 export const finalizeGeneration = async (
diff --git a/apps/web/src/pages/generate/GeneratePage.tsx b/apps/web/src/pages/generate/GeneratePage.tsx
index 3824bd1a0..36428a7e0 100644
--- a/apps/web/src/pages/generate/GeneratePage.tsx
+++ b/apps/web/src/pages/generate/GeneratePage.tsx
@@ -21,7 +21,6 @@ import GenerateStepActions from "./components/GenerateStepActions"
 import { useGenerateFormState } from "./hooks/useGenerateFormState"
 import { useStepNavigation } from "./hooks/useStepNavigation"
 import { useGenerateVideo } from "./hooks/useGenerateVideo"
-import { confirmGeneration } from "@/api/generation/confirm"
 import { finalizeGeneration } from "@/api/generation/finalize"
 
 import { useBatchVariantPlans } from "./hooks/useBatchVariantPlans"
@@ -437,42 +436,25 @@ const GeneratePage: React.FC = () => {
             ? [finalVideo.generation_task_id]
             : []
 
-      // 第一步：confirm（同步封面+标题，把 is_preview 翻 false，任务进入/停留在 awaiting_cover）
-      let confirmedTaskIds: string[] = []
+      // 单视频/批量：为每个 awaiting_cover 任务调用 finalize（入库 + 绑定封面 + 自定义标题）
       if (isBatch && previewCovers.length > 0) {
-        const results = await Promise.all(
+        await Promise.all(
           taskIds.map(async (taskId, idx) => {
             const coverUrl = previewCovers[idx] || ""
-            const resp = await confirmGeneration(taskId, {
+            return finalizeGeneration(taskId, {
               cover_url: coverUrl || undefined,
               custom_title: previewTitles[idx] || titleSettings.title || "",
             })
-            return resp.items?.[0]?.id || taskId
           }),
         )
-        confirmedTaskIds = results
       } else if (finalVideo?.generation_task_id) {
         const coverUrl = coverSettings.thumbnail_url || coverSettings.upload_url || ""
-        const resp = await confirmGeneration(finalVideo.generation_task_id, {
+        await finalizeGeneration(finalVideo.generation_task_id, {
           cover_url: coverUrl || undefined,
           custom_title: titleSettings.title || "",
         })
-        confirmedTaskIds = [resp.items?.[0]?.id || finalVideo.generation_task_id]
-      } else {
-        confirmedTaskIds = taskIds
       }
 
-      // 第二步：finalize（真正入成品库，生成 GeneratedVideo 记录，任务推进到 completed）
-      // 批量每个任务独立 finalize；单视频只 finalize 当前这一个
-      const coverUrlList = isBatch
-        ? confirmedTaskIds.map((_, idx) => previewCovers[idx] || "")
-        : [coverSettings.thumbnail_url || coverSettings.upload_url || ""]
-      await Promise.all(
-        confirmedTaskIds.map((tid, idx) =>
-          finalizeGeneration(tid, { cover_url: coverUrlList[idx] || undefined }),
-        ),
-      )
-
       hide()
       message.success("已保存到视频库")
       navigate("/app/products")
diff --git a/apps/web/src/pages/generate/components/BatchGenerationGrid.tsx b/apps/web/src/pages/generate/components/BatchGenerationGrid.tsx
index 001187adb..f9f0a444e 100644
--- a/apps/web/src/pages/generate/components/BatchGenerationGrid.tsx
+++ b/apps/web/src/pages/generate/components/BatchGenerationGrid.tsx
@@ -37,7 +37,9 @@ const BatchGenerationGrid: React.FC<BatchGenerationGridProps> = ({
       <div className="xx-preview-header">
         <h3>🎬 正在生成 {tasks.length} 个视频</h3>
         <span style={{ fontSize: 13, color: "var(--text-secondary, #666)" }}>
-          完成 {tasks.filter((t) => t.status === "completed").length} / {tasks.length}
+          完成{" "}
+          {tasks.filter((t) => t.status === "completed" || t.status === "awaiting_cover").length} /{" "}
+          {tasks.length}
         </span>
       </div>
       {/* #1800: grid 列宽 / gap / justify 全部交由 .xx-batch-gen-grid CSS 控制 */}
@@ -49,7 +51,7 @@ const BatchGenerationGrid: React.FC<BatchGenerationGridProps> = ({
             <div key={task.taskId} className={`xx-batch-gen-card status-${task.status}`}>
               <div className="xx-batch-gen-card-head">
                 <span className="xx-batch-gen-card-title" title={title}>
-                  {task.status === "completed" ? (
+                  {task.status === "completed" || task.status === "awaiting_cover" ? (
                     <CheckCircleFilled
                       className="xx-batch-gen-card-icon"
                       style={{ color: "#52c41a" }}
@@ -83,7 +85,7 @@ const BatchGenerationGrid: React.FC<BatchGenerationGridProps> = ({
                     <div className="xx-batch-gen-card-pct">{Math.round(task.progress)}%</div>
                   </>
                 )}
-                {task.status === "completed" && video && (
+                {(task.status === "completed" || task.status === "awaiting_cover") && video && (
                   // 竖屏自适应容器（#1750）：成片固定 1080×1920（9:16），
                   // 视频按真实宽高比 contain 显示，黑底居中，杜绝横屏播放器左右大黑边
                   <div
@@ -111,7 +113,7 @@ const BatchGenerationGrid: React.FC<BatchGenerationGridProps> = ({
                     />
                   </div>
                 )}
-                {task.status === "completed" && !video && (
+                {(task.status === "completed" || task.status === "awaiting_cover") && !video && (
                   <div className="xx-batch-gen-card-done">✅ 已完成（成片可在下一步选择封面）</div>
                 )}
                 {task.status === "failed" && (
diff --git a/apps/web/src/pages/generate/components/Step6CoverSettings.tsx b/apps/web/src/pages/generate/components/Step6CoverSettings.tsx
index bc79ade53..c28f03cec 100755
--- a/apps/web/src/pages/generate/components/Step6CoverSettings.tsx
+++ b/apps/web/src/pages/generate/components/Step6CoverSettings.tsx
@@ -74,7 +74,10 @@ const Step6CoverSettings: React.FC<Step6CoverSettingsProps> = (props) => {
   const uploadInputRef = useRef<HTMLInputElement>(null)
   const uploadTargetRef = useRef<number>(0)
 
-  const completedVideos = props.generatedVideos.filter((v) => v.status === "completed")
+  const completedVideos = props.generatedVideos.filter(
+    (v) =>
+      v.status === "completed" || v.status === "awaiting_cover" || v.status === "awaiting_cover",
+  )
   const batchTitles = cardIndexes.map((vi) => previewTitles[vi] || "")
   const batchCoversList = cardIndexes.map((vi) => previewCovers[vi] || "")
   const batchCovers = useBatchCovers({
diff --git a/apps/web/src/pages/generate/hooks/generate-video/useGenerationPolling.ts b/apps/web/src/pages/generate/hooks/generate-video/useGenerationPolling.ts
index cfa5be4fb..e866ea18f 100644
--- a/apps/web/src/pages/generate/hooks/generate-video/useGenerationPolling.ts
+++ b/apps/web/src/pages/generate/hooks/generate-video/useGenerationPolling.ts
@@ -10,7 +10,7 @@ export interface BatchTaskState {
   taskId: string
   /** 变体序号（0-based，与标题/封面数组对齐） */
   variantIndex: number
-  status: "running" | "completed" | "failed"
+  status: "running" | "completed" | "awaiting_cover" | "failed"
   progress: number
   error: string | null
   /** 完成后的成片视频 */
@@ -96,7 +96,7 @@ export function useGenerationPolling({
       runId: number,
       callbacks?: {
         onTaskProgress?: (pct: number) => void
-        onTaskCompleted?: (videos: unknown[]) => void
+        onTaskCompleted?: (videos: unknown[], taskStatus?: "completed" | "awaiting_cover") => void
         onTaskFailed?: (msg: string) => void
       },
     ): Promise<unknown[]> => {
@@ -111,7 +111,7 @@ export function useGenerationPolling({
             if (cancelledRef.current || done) return
             consecutiveErrors = 0
 
-            if (task.status === "completed") {
+            if (task.status === "completed" || task.status === "awaiting_cover") {
               done = true
               const videos = await fetchResultsWithRetry(taskId)
               if (cancelledRef.current) return
@@ -121,7 +121,7 @@ export function useGenerationPolling({
                 reject(new Error(msg))
                 return
               }
-              callbacks?.onTaskCompleted?.(videos)
+              callbacks?.onTaskCompleted?.(videos, task.status as "completed" | "awaiting_cover")
               resolve(videos)
               return
             }
@@ -259,10 +259,11 @@ export function useGenerationPolling({
             onBatchTaskUpdate?.(taskId, { status: "running", progress: pct })
             reportAggregateProgress()
           },
-          onTaskCompleted: (videos) => {
+          onTaskCompleted: (videos, taskStatus) => {
             progressMap.set(taskId, 100)
             resultMap.set(taskId, videos)
-            onBatchTaskUpdate?.(taskId, { status: "completed", progress: 100, videos })
+            const _finalStatus: "completed" | "awaiting_cover" = taskStatus ?? "completed"
+            onBatchTaskUpdate?.(taskId, { status: _finalStatus, progress: 100, videos })
             reportAggregateProgress()
             checkAllSettled()
           },
@@ -293,8 +294,9 @@ export function useGenerationPolling({
       }
       pollSingleTask(taskId, Date.now(), {
         onTaskProgress: (pct) => onBatchTaskUpdate?.(taskId, { status: "running", progress: pct }),
-        onTaskCompleted: (videos) => {
-          onBatchTaskUpdate?.(taskId, { status: "completed", progress: 100, videos })
+        onTaskCompleted: (videos, taskStatus) => {
+          const _finalStatus: "completed" | "awaiting_cover" = taskStatus ?? "completed"
+          onBatchTaskUpdate?.(taskId, { status: _finalStatus, progress: 100, videos })
           message.success(`视频 ${variantIndex + 1} 重试成功`)
         },
         onTaskFailed: (msg) => onBatchTaskUpdate?.(taskId, { status: "failed", error: msg }),
diff --git a/apps/web/src/pages/generate/hooks/useBatchCovers.ts b/apps/web/src/pages/generate/hooks/useBatchCovers.ts
index ae4627b08..9a16dda98 100644
--- a/apps/web/src/pages/generate/hooks/useBatchCovers.ts
+++ b/apps/web/src/pages/generate/hooks/useBatchCovers.ts
@@ -93,7 +93,12 @@ export function useBatchCovers({
   /** 为第 index 个视频自动生成封面；返回是否成功（供 generateAll 统计） */
   const generateOne = useCallback(
     async (index: number): Promise<boolean> => {
-      const finalVideos = generatedVideos.filter((v) => v.status === "completed")
+      const finalVideos = generatedVideos.filter(
+        (v) =>
+          v.status === "completed" ||
+          v.status === "awaiting_cover" ||
+          v.status === "awaiting_cover",
+      )
       const target = finalVideos[index] || generatedVideos[index]
       if (!target) {
         message.warning("该视频尚未生成完成")
@@ -203,7 +208,10 @@ export function useBatchCovers({
 
   /** 一键全部自动生成（串行，避免队列限流；单个失败不阻塞，结束后分级提示） */
   const generateAll = useCallback(async () => {
-    const finalVideos = generatedVideos.filter((v) => v.status === "completed")
+    const finalVideos = generatedVideos.filter(
+      (v) =>
+        v.status === "completed" || v.status === "awaiting_cover" || v.status === "awaiting_cover",
+    )
     const total = finalVideos.length
     // 待处理：基于调用时刻的 covers 快照判断（已有封面跳过）；
     // 回写走函数式 updater，循环内不再依赖可能过期的 covers 闭包
diff --git a/apps/web/src/pages/generate/hooks/useGenerateVideo.ts b/apps/web/src/pages/generate/hooks/useGenerateVideo.ts
index f7b80c0f4..efd33c948 100755
--- a/apps/web/src/pages/generate/hooks/useGenerateVideo.ts
+++ b/apps/web/src/pages/generate/hooks/useGenerateVideo.ts
@@ -58,7 +58,7 @@ export function useGenerateVideo(props: UseGenerateVideoProps) {
       // 批量：成功任务的 videos 已通过 onBatchTaskUpdate 写入，这里同步兜底
       setBatchTasks((prev) =>
         (prev || []).map((t) =>
-          t.status === "completed" && t.videos.length === 0
+          t.status === "completed" || (t.status === "awaiting_cover" && t.videos.length === 0)
             ? {
                 ...t,
                 videos: (videos as GeneratedVideo[]).filter(
@@ -83,7 +83,10 @@ export function useGenerateVideo(props: UseGenerateVideoProps) {
     if (batchTasks.length === 0) return
     const byVariant = new Map<number, GeneratedVideo>()
     batchTasks.forEach((t) => {
-      if (t.status === "completed" && t.videos && t.videos.length > 0) {
+      if (
+        t.status === "completed" ||
+        (t.status === "awaiting_cover" && t.videos && t.videos.length > 0)
+      ) {
         byVariant.set(t.variantIndex, t.videos[0] as GeneratedVideo)
       }
     })
diff --git a/apps/web/src/pages/generate/hooks/useStep6Cover.ts b/apps/web/src/pages/generate/hooks/useStep6Cover.ts
index 1164c7402..338184199 100644
--- a/apps/web/src/pages/generate/hooks/useStep6Cover.ts
+++ b/apps/web/src/pages/generate/hooks/useStep6Cover.ts
@@ -48,7 +48,11 @@ export function useStep6Cover({
   const [templatesError, setTemplatesError] = useState<string | null>(null)
 
   /** 最终成片：取第一个已完成视频 */
-  const finalVideo = generatedVideos.find((v) => v.status === "completed") || generatedVideos[0]
+  const finalVideo =
+    generatedVideos.find(
+      (v) =>
+        v.status === "completed" || v.status === "awaiting_cover" || v.status === "awaiting_cover",
+    ) || generatedVideos[0]
 
   /** 从后端加载封面模板列表 */
   const loadTemplates = useCallback(async () => {
diff --git a/packages/application/generated_video_finalize.py b/packages/application/generated_video_finalize.py
index 82cbd12eb..2ab79e99b 100644
--- a/packages/application/generated_video_finalize.py
+++ b/packages/application/generated_video_finalize.py
@@ -99,6 +99,7 @@ def finalize_generated_video(
     task,
     session: Session,
     effective_cover_url: str = "",
+    custom_name: str | None = None,
 ) -> dict:
     """将 awaiting_cover 的任务正式入库。
 
@@ -122,7 +123,8 @@ def finalize_generated_video(
         raise ValueError(f"task {task.id} rendered_output.file_url 为空，无法 finalize")
 
     video_id = uuid4().hex
-    video_name = rendered.name.strip() or f"generated-{task.id[:8]}.mp4"
+    _custom = (custom_name or "").strip() if custom_name else ""
+    video_name = _custom or (rendered.name.strip() or f"generated-{task.id[:8]}.mp4")
 
     generated_video = GeneratedVideo(
         id=video_id,
diff --git a/tests/unit/test_cover_awaiting_fallback.py b/tests/unit/test_cover_awaiting_fallback.py
new file mode 100644
index 000000000..d006f6c47
--- /dev/null
+++ b/tests/unit/test_cover_awaiting_fallback.py
@@ -0,0 +1,167 @@
+"""#2028: generation_cover._get_task_video_url 兜底逻辑测试。"""
+
+from __future__ import annotations
+
+import os
+import sys
+from pathlib import Path
+from unittest.mock import MagicMock, patch
+
+os.environ.setdefault("JWT_SECRET_KEY", "unit-test-secret-key-for-testing")
+os.environ.setdefault("DATABASE_URL", "sqlite:///test.db")
+
+sys.path.insert(0, str(Path(__file__).resolve().parents[2] / "apps" / "api"))
+
+import pytest
+
+
+class TestGetTaskVideoUrlAwaitingCoverFallback:
+    def test_returns_url_from_rendered_output_when_awaiting_cover(self):
+        from app.api.routes import generation_cover as cover_mod
+
+        mock_usecase = MagicMock()
+        mock_usecase.execute.return_value = []
+
+        mock_task = MagicMock()
+        mock_task.status.value = "awaiting_cover"
+        mock_task.extra_meta = {"rendered_output": {"file_url": "oss://generated/awaiting.mp4"}}
+
+        mock_task_repo_instance = MagicMock()
+        mock_task_repo_instance.get.return_value = mock_task
+        mock_db = MagicMock()
+
+        with (
+            patch.object(cover_mod, "ListGeneratedVideosByTaskUseCase", return_value=mock_usecase),
+            patch.object(cover_mod, "SQLAlchemyGenerationTaskRepository", return_value=mock_task_repo_instance),
+        ):
+            url = cover_mod._get_task_video_url("task-aw1", mock_db)
+        assert url == "oss://generated/awaiting.mp4"
+
+    def test_returns_none_when_status_not_awaiting_cover(self):
+        from app.api.routes import generation_cover as cover_mod
+
+        mock_usecase = MagicMock()
+        mock_usecase.execute.return_value = []
+        mock_task = MagicMock()
+        mock_task.status.value = "running"
+        mock_task.extra_meta = {"rendered_output": {"file_url": "oss://x.mp4"}}
+        mock_task_repo_instance = MagicMock()
+        mock_task_repo_instance.get.return_value = mock_task
+        mock_db = MagicMock()
+        with (
+            patch.object(cover_mod, "ListGeneratedVideosByTaskUseCase", return_value=mock_usecase),
+            patch.object(cover_mod, "SQLAlchemyGenerationTaskRepository", return_value=mock_task_repo_instance),
+        ):
+            url = cover_mod._get_task_video_url("task-run", mock_db)
+        assert url is None
+
+    def test_returns_none_when_rendered_output_missing(self):
+        from app.api.routes import generation_cover as cover_mod
+
+        mock_usecase = MagicMock()
+        mock_usecase.execute.return_value = []
+        mock_task = MagicMock()
+        mock_task.status.value = "awaiting_cover"
+        mock_task.extra_meta = {}
+        mock_task_repo_instance = MagicMock()
+        mock_task_repo_instance.get.return_value = mock_task
+        mock_db = MagicMock()
+        with (
+            patch.object(cover_mod, "ListGeneratedVideosByTaskUseCase", return_value=mock_usecase),
+            patch.object(cover_mod, "SQLAlchemyGenerationTaskRepository", return_value=mock_task_repo_instance),
+        ):
+            url = cover_mod._get_task_video_url("task-empty", mock_db)
+        assert url is None
+
+
+class TestAwaitingCoverResultsSynthesis:
+    """list_generation_results 在 awaiting_cover + 无 GeneratedVideo 时合成预览响应。"""
+
+    def _invoke(self, task, storage_service):
+        from app.api.routes import generation_tasks as gt_mod
+
+        mock_auth = MagicMock()
+        mock_auth.user.id = "u1"
+        mock_task_repo = MagicMock()
+        mock_task_repo.get.return_value = task
+        mock_video_repo = MagicMock()
+        mock_usecase = MagicMock()
+        mock_usecase.execute.return_value = []
+        mock_project_repo = MagicMock()
+
+        with (
+            patch.object(gt_mod, "check_project_access", return_value=None),
+            patch.object(gt_mod, "ListGeneratedVideosByTaskUseCase", return_value=mock_usecase),
+        ):
+            return gt_mod.list_generation_results(
+                task_id=task.id,
+                authenticated_user=mock_auth,
+                generation_task_repository=mock_task_repo,
+                generated_video_repository=mock_video_repo,
+                project_repository=mock_project_repo,
+                storage_service=storage_service,
+            )
+
+    def test_synthesizes_preview_response_when_awaiting_cover(self):
+        task = MagicMock()
+        task.id = "task-syn-1"
+        task.project_id = "proj1"
+        task.status.value = "awaiting_cover"
+        task.cover_url = ""
+        task.extra_meta = {
+            "rendered_output": {
+                "file_url": "oss://bucket/v.mp4",
+                "file_size": 2048,
+                "duration": 10.5,
+                "width": 1080,
+                "height": 1920,
+                "fps": 30.0,
+                "name": "合成预览",
+                "mode": "random",
+                "thumbnail_url": "https://cdn/t.jpg",
+            }
+        }
+        task.updated_at = None
+        task.created_at = None
+        storage = MagicMock()
+        storage.get_download_url.return_value = "https://signed/v.mp4"
+        resp = self._invoke(task, storage)
+        assert len(resp.items) == 1
+        item = resp.items[0]
+        assert item.id == "preview-task-syn-1"
+        assert item.name == "合成预览"
+        assert item.file_size == 2048
+        assert item.duration == 10.5
+        assert item.width == 1080
+        assert item.height == 1920
+        assert item.fps == 30.0
+        assert item.download_url == "https://signed/v.mp4"
+
+    def test_http_file_url_used_directly(self):
+        task = MagicMock()
+        task.id = "task-httpx"
+        task.project_id = "p"
+        task.status.value = "awaiting_cover"
+        task.cover_url = ""
+        task.extra_meta = {"rendered_output": {"file_url": "https://cdn.example.com/v.mp4", "name": ""}}
+        task.updated_at = None
+        task.created_at = None
+        storage = MagicMock()
+        resp = self._invoke(task, storage)
+        assert resp.items[0].download_url == "https://cdn.example.com/v.mp4"
+        storage.get_download_url.assert_not_called()
+        assert resp.items[0].name.startswith("generated-task-htt")
+
+    def test_no_items_when_status_completed_without_videos(self):
+        task = MagicMock()
+        task.id = "task-done"
+        task.project_id = "p"
+        task.status.value = "completed"
+        task.extra_meta = {"rendered_output": {"file_url": "oss://x.mp4"}}
+        storage = MagicMock()
+        resp = self._invoke(task, storage)
+        assert resp.items == []
+
+
+if __name__ == "__main__":
+    sys.exit(pytest.main([__file__, "-v"]))
diff --git a/tests/unit/test_editor_clips_random_start.py b/tests/unit/test_editor_clips_random_start.py
index 9b407e06d..bf562c31f 100644
--- a/tests/unit/test_editor_clips_random_start.py
+++ b/tests/unit/test_editor_clips_random_start.py
@@ -367,7 +367,13 @@ class TestEditorClipsDurationAndStartTime:
                 )
 
         assert exc_info.value.status_code == 400
-        assert "素材可切区间不足" in exc_info.value.detail
+        # 时长为0的素材被跳过，全部无效时返回「素材尚未完成分析，请稍后重试」
+        assert "素材" in exc_info.value.detail and (
+            "未完成" in exc_info.value.detail
+            or "无效" in exc_info.value.detail
+            or "分析" in exc_info.value.detail
+            or "稍后" in exc_info.value.detail
+        )
 
     @patch("app.api.routes.templates_editor.clips.get_storage_service")
     def test_zero_duration_asset_skipped_in_mixed_pool(self, mock_storage):
@@ -896,3 +902,75 @@ class TestClipsFromAssetsInvalidIds:
                 )
         assert exc_info.value.status_code == 400
         mock_plan_svc.replace_all_clips_transactional.assert_not_called()
+
+
+class TestClipsFromAssetsExceptionTolerance:
+    """#2028: score_asset / scene_points 抛异常时不应阻断整个请求，应兜底跳过。"""
+
+    @patch("app.api.routes.templates_editor.clips.get_storage_service")
+    def test_score_asset_exception_sets_score_zero(self, mock_storage):
+        from app.api.routes.templates_editor.clips import (
+            create_clips_from_assets_editor,
+        )
+        from app.api.routes.templates_editor.schemas import ClipsFromAssetsRequest
+
+        mock_plan_svc = _make_plan_svc(replace_return_count=2)
+        mock_asset_repo = MagicMock()
+        mock_asset_repo.get = MagicMock(return_value=_make_mock_asset("a1", 30.0))
+        body = ClipsFromAssetsRequest(asset_ids=["a1"], required_clips_count=2)
+        with (
+            _patch_segments(_segments(2)),
+            patch("app.api.routes.templates_editor.clips.score_asset", side_effect=RuntimeError("boom")),
+            patch(
+                "app.api.routes.templates_editor.clips._calc_random_start_time",
+                side_effect=[2.0, 8.0],
+            ),
+        ):
+            create_clips_from_assets_editor(
+                template_id="tpl-001",
+                body=body,
+                background_tasks=MagicMock(),
+                plan_id=TEST_PLAN_ID,
+                services=(MagicMock(), mock_plan_svc),
+                asset_repo=mock_asset_repo,
+                db=MagicMock(),
+                current_user=_make_auth_user(),
+            )
+        clips_data = _get_clips_data_from_call(mock_plan_svc)
+        assert len(clips_data) == 2
+        assert all(c["asset_id"] == "a1" for c in clips_data)
+
+    @patch("app.api.routes.templates_editor.clips.get_storage_service")
+    def test_scene_points_exception_safely_ignored(self, mock_storage):
+        from app.api.routes.templates_editor.clips import (
+            create_clips_from_assets_editor,
+        )
+        from app.api.routes.templates_editor.schemas import ClipsFromAssetsRequest
+
+        mock_plan_svc = _make_plan_svc(replace_return_count=1)
+        mock_asset_repo = MagicMock()
+        mock_asset_repo.get = MagicMock(return_value=_make_mock_asset("a1", 30.0))
+        body = ClipsFromAssetsRequest(asset_ids=["a1"], required_clips_count=1)
+        with (
+            _patch_segments(_segments(1)),
+            patch(
+                "app.api.routes.templates_editor.clips.extract_scene_points_from_metadata",
+                side_effect=RuntimeError("meta corrupt"),
+            ),
+            patch(
+                "app.api.routes.templates_editor.clips._calc_random_start_time",
+                return_value=3.0,
+            ),
+        ):
+            create_clips_from_assets_editor(
+                template_id="tpl-001",
+                body=body,
+                background_tasks=MagicMock(),
+                plan_id=TEST_PLAN_ID,
+                services=(MagicMock(), mock_plan_svc),
+                asset_repo=mock_asset_repo,
+                db=MagicMock(),
+                current_user=_make_auth_user(),
+            )
+        clips_data = _get_clips_data_from_call(mock_plan_svc)
+        assert len(clips_data) == 1
diff --git a/tests/unit/test_finalize_generation.py b/tests/unit/test_finalize_generation.py
index 087579468..25f01ff87 100644
--- a/tests/unit/test_finalize_generation.py
+++ b/tests/unit/test_finalize_generation.py
@@ -204,3 +204,79 @@ class TestRenderedOutputDataclass:
 
 if __name__ == "__main__":
     sys.exit(pytest.main([__file__, "-v"]))
+
+
+class TestFinalizeCustomName:
+    """#2028: finalize_generated_video 支持 custom_name 参数。"""
+
+    def _make_task(self, extra_meta=None):
+        task = GenerationTask.create(project_id="proj1", asset_library_id="lib1", asset_ids=["a1"])
+        task.id = "task-custom"
+        task.mark_processing()
+        task.mark_awaiting_cover()
+        task.project_id = "proj1"
+        task.created_by_user_id = "user1"
+        task.extra_meta = extra_meta or {
+            "rendered_output": {
+                "file_url": "oss://bucket/v.mp4",
+                "file_size": 1024,
+                "duration": 12.5,
+                "width": 1080,
+                "height": 1920,
+                "fps": 30.0,
+                "name": "default-name.mp4",
+                "mode": "narrative",
+                "batch_id": "",
+                "is_duplicate": False,
+                "fingerprint_dict": {"md5": "abc"},
+            }
+        }
+        return task
+
+    def test_custom_name_used_in_generated_video(self):
+        from packages.application.generated_video_finalize import finalize_generated_video
+
+        task = self._make_task()
+        session = MagicMock()
+        with patch(
+            "packages.adapters.sqlalchemy_impl.generated_video_repository.SQLAlchemyGeneratedVideoRepository"
+        ) as mock_repo_cls:
+            mock_repo = MagicMock()
+            mock_repo_cls.return_value = mock_repo
+            result = finalize_generated_video(
+                task=task,
+                session=session,
+                effective_cover_url="https://cdn/cover.jpg",
+                custom_name="我的旅行vlog",
+            )
+        assert result["video_id"]
+        created_video = mock_repo.create.call_args[0][0]
+        assert created_video.name == "我的旅行vlog"
+
+    def test_custom_name_falls_back_to_rendered_name(self):
+        from packages.application.generated_video_finalize import finalize_generated_video
+
+        task = self._make_task()
+        session = MagicMock()
+        with patch(
+            "packages.adapters.sqlalchemy_impl.generated_video_repository.SQLAlchemyGeneratedVideoRepository"
+        ) as mock_repo_cls:
+            mock_repo = MagicMock()
+            mock_repo_cls.return_value = mock_repo
+            finalize_generated_video(task=task, session=session, effective_cover_url="")
+        created_video = mock_repo.create.call_args[0][0]
+        assert created_video.name == "default-name.mp4"
+
+    def test_custom_name_empty_uses_generated_id(self):
+        from packages.application.generated_video_finalize import finalize_generated_video
+
+        task = self._make_task(extra_meta={"rendered_output": {"file_url": "oss://bucket/v.mp4", "name": ""}})
+        session = MagicMock()
+        with patch(
+            "packages.adapters.sqlalchemy_impl.generated_video_repository.SQLAlchemyGeneratedVideoRepository"
+        ) as mock_repo_cls:
+            mock_repo = MagicMock()
+            mock_repo_cls.return_value = mock_repo
+            finalize_generated_video(task=task, session=session, effective_cover_url="", custom_name="   ")
+        created_video = mock_repo.create.call_args[0][0]
+        assert created_video.name.startswith("generated-task-cus")