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7 Commits

Author SHA1 Message Date
CI Bot 0bfff35301 feat: 多轨道混音 + 字幕渲染引擎 + 视频拼接
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三个渲染能力后端实现:

1. 多轨道混音(multi_track_mixer.py)
   - 支持任意数量音频轨道(原音/BGM/配音/音效/环境音)
   - 每轨独立音量、淡入淡出、时间偏移
   - 主输出音量控制 + 归一化补偿
   - 降级:单轨失败自动跳过,混音失败回退主音频

2. 字幕渲染引擎(subtitle_render_engine.py)
   - 统一 SubtitleStyle 配置:字体/颜色/描边/阴影/背景框/位置
   - 9宫格位置 + 自定义边距
   - 多源字幕合并:标题/静态字幕/ASR时间轴/手动字幕
   - 淡入淡出动画效果
   - 长文本自动换行
   - 便捷函数 build_subtitles_from_plan + build_subtitle_filter

3. 视频拼接引擎(concat_engine.py)
   - 两种模式:concat demuxer(stream copy,最快)+ concat filter(重新编码)
   - 自动选择最优模式,参数不一致时智能降级
   - 支持每段独立裁剪(start_time + duration)
   - 支持输出分辨率/帧率指定,自动缩放+pad补齐
   - 降级:某段失败跳过,不阻断整体拼接

接入:
- render_audio.py: mix_audio 新增 audio_tracks_config 参数
- unified_render_service.py: 从 plan.config.audio_tracks 读取配置

52个新增单测 + 2014个全套测试全绿,零回归
2026-07-14 11:35:42 +08:00
xiaoxia 8a2d2df3cd feat: 视频封面生成 + 视频倒放 + 贴纸叠加三个渲染能力
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Squash merge PR #305
2026-07-14 11:05:04 +08:00
xiaoxia e9a6d19e00 feat: 绿幕抠像 + 音频降噪引擎(Chroma Key + Noise Reduction) (#303)
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2026-07-14 10:52:01 +08:00
xiaoxia 241760ef39 feat: 水印 + 片头片尾引擎(视频包装能力) (#298)
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2026-07-14 10:44:19 +08:00
xiaoxia 3cd26e98db feat: BGM音轨混音能力(音量/淡入淡出/人声闪避/预设BGM库) (#291)
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2026-07-14 10:37:24 +08:00
xiaoxia 881eea9195 fix(api+ci): DELETE 204响应体全修复 + isort/black整理 + CI环境兼容 + 测试修复 (#286)
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fix(api+ci): DELETE 204响应体全修复 + isort/black整理 + CI环境兼容 + 测试修复
2026-07-14 07:07:51 +08:00
CI Bot 6fc1abf2f5 Phase 4 Backend P2 cleanup: 异常处理/类型注解/模块拆分/大函数拆分/配置项确认
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- P2-1: 10处 except 审查改进(细化异常类型、添加日志)
- P2-2: 22个路由函数类型注解补全
- P2-3: edit_plans.py 拆分为 4 个模块(CRUD/generation/ai/timeline)
- P2-4: generate_video + generate_plan 大函数拆分
- P2-5: unified_render_service.py 拆分(1517→984行)
  - render_audio.py: 音频混音模块(RenderContext + mix/merge 函数)
  - render_subtitles.py: ASS 字幕生成模块
- P2-6: 6个未使用配置项删除确认

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-13 20:00:54 +08:00