xiaoxia
2b0c1c78be
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根因：封面图片生成有3条路径，只有路径B(extract_and_upload_cover_frames) 有标题叠加，但其产物(render_result.cover_candidates)被_render_video丢弃， 导致封面API永远拿不到带标题的候选帧，fallback到路径C远程抽帧(无标题)。 修改内容： 1. _render_video 返回值从 tuple[Path,float] 改为 tuple[Path,float,list[dict]] 将 render_result.cover_candidates 传递给调用方 2. generate_video 渲染完成后将 cover_candidates 持久化到 GenerationTask.metadata(JSON列)，无需DB migration 3. generation_cover API 从 GenerationTask.metadata 读取 cover_candidates 替代原来从 plan.config 读取(从来没人写入过) 4. 删除路径A: 移除 RenderAdapter 中 generate_and_upload_thumbnail 调用 (无标题且产物从未被使用) 5. 清理死代码: 删除 extract_first_frame、generate_and_upload_thumbnail 函数及 RenderAdapterResult.thumbnail_url 字段 6. 路径C(_extract_frames_with_ffmpeg)保留作为兜底不变 标题传递链路验证: custom_title → task_info → _render_video → virtual_plan.config[title] → render_adapter plan_config → extract_and_upload_cover_frames(title_text) → _overlay_title_on_image → 最终封面候选帧带标题 影响文件: - apps/worker/worker_app/tasks/generation.py - apps/worker/video_processing/render_adapter.py - apps/worker/video_processing/thumbnail_generator.py - apps/api/app/api/routes/generation_cover.py
xiaoxia-saas API
结构
app/core/：配置与基础能力app/api/：路由组织app/schemas/：请求响应模型app/dependencies.py：依赖注入入口main.py：FastAPI 启动入口
当前可用接口
GET /api/healthGET /api/projects?workspace_id=...POST /api/projects