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fix: 预览播放器4个线上问题修复（弹窗裁剪+HEVC黑屏+标题换行+封面400） #1439

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xiaoxia wants to merge 1 commits from fix/preview-player-4-issues into develop
pull from: fix/preview-player-4-issues
merge into: xiaoxia:develop
Conversation 5 Commits 1 Files Changed 4
+166 -17

1 Commits

Author SHA1 Message Date
张宏杰 1e2d06ec1b fix: 预览播放器4个线上问题修复
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Bug 1: 弹窗顶部被裁剪
- generate.css: .ant-modal-content/.ant-modal-close 规则限定到 .xx-preview-modal
- GeneratePage.tsx: 预览弹窗 Modal 添加 className='xx-preview-modal'

Bug 2: Canvas 黑屏（HEVC 编码不支持）
- useCanvasPlayer.ts: 新增 findCodecConfig 模块级函数解析 MP4 buffer
- 提取 avcC/hvcC box 数据作为 VideoDecoder description
- SegmentMeta 新增 description 字段，decoder.configure 传入

Bug 3: 标题 / 手动换行
- useCanvasPlayer.ts: drawTitle 按 / 分割多行绘制
- lineHeight = fontSize * 1.3，根据 position 居中/对齐

Bug 4: 封面生成 400 错误
- useStep6Cover.ts: 封面 API 返回 400 时自动创建后端预览渲染
- 轮询等待预览完成后重试封面生成
 2026-08-19 14:05:17 +08:00