feat: 上传时自动检测 HEVC 编码并转码为 1080p H.264 #1449

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xiaoxia merged 6 commits from feat/hevc-auto-transcode into develop 2026-08-20 12:10:15 +08:00

6 Commits

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CI Bot 1e1bc7f904 style: auto-format with black + isort + prettier [skip ci-format-check]
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2026-08-20 03:54:42 +00:00
CI Bot efe34793f3 test: 添加 HEVC 自动转码逻辑单元测试
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覆盖场景:
- HEVC 编码检测(hevc/h265/hvh1,不区分大小写)
- H.264 视频不触发转码
- 转码后文件命名规则(_h264 后缀)
- 元数据提取失败时的脏数据防护(AI Code Review BUG 修复)
- FFmpeg 超时/错误降级策略
- Scale filter 逻辑(4K/1080p/720p)
- 安全修复(NamedTemporaryFile 替代 mktemp)
- 稳定性修复(stdout=DEVNULL, stderr=PIPE)
- FFmpeg 命令参数验证

16 个测试用例,全部通过
2026-08-20 11:49:03 +08:00
CI Bot dc3deda8d2 fix: 修复 AI Code Review 的安全和稳定性问题
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1. tempfile.mktemp -> NamedTemporaryFile(delete=False)
   - 避免 TOCTOU 竞态条件安全风险

2. subprocess.run capture_output=True -> stdout=DEVNULL, stderr=PIPE
   - 避免 FFmpeg 大量日志输出导致内存溢出 OOM
2026-08-20 11:28:35 +08:00
CI Bot ffd1b0f947 fix: HEVC 转码后先提取元数据再更新 storage_key,避免脏数据
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修复 AI Code Review 发现的逻辑 BUG:
- 转码成功后先提取元数据到临时变量
- 确认元数据提取成功后再更新 job.storage_key
- 避免 "新文件 + 旧元数据" 的数据不一致问题
2026-08-20 11:22:04 +08:00
CI Bot a5bc9a3ea6 style: auto-format with black + isort + prettier [skip ci-format-check]
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2026-08-20 02:54:23 +00:00
CI Bot 773dafe5a8 feat: 上传时自动检测 HEVC 编码并转码为 1080p H.264
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解决 4K HEVC 素材在浏览器 WebCodecs 硬件解码时输出黑帧的问题。

改动范围:仅 ingest.py(+88 行)
- metadata 提取后检测 codec 是否为 hevc/h265/hvh1
- HEVC 素材自动转码:H.264 CRF18 + 1080p + yuv420p + faststart
- 转码产物上传 OSS,storage_key 指向 _h264.mp4
- 转码后重新提取 metadata(新 codec/size/分辨率)
- 非 HEVC 素材(H.264 等)不做任何处理
- 转码失败降级使用原始文件,不阻塞上传流程
- 超时 300s,临时文件 finally 清理
2026-08-20 10:50:06 +08:00