xiaoxia/xiaoxia-saas

feat: 视频调速引擎（快进/慢放） #294

Merged

xiaoxia merged 1 commits from feat/video-speed-control into develop

2026-07-14 11:36:24 +08:00

Author	SHA1	Message	Date
CI Bot	ca2e044246	feat: 视频调速引擎（快进/慢放） CI/CD Pipeline / Validate Code Quality And Tests (pull_request) Successful in 46s Details CI/CD Pipeline / Unit Tests (pull_request) Successful in 1m20s Details CI/CD Pipeline / Integration Tests (pull_request) Successful in 1m12s Details CI/CD Pipeline / Frontend Lint (pull_request) Successful in 3m42s Details CI/CD Pipeline / Build & Push Staging (Watchtower auto-deploy) (pull_request) Has been skipped Details CI/CD Pipeline / Build Production Runtime Images (pull_request) Has been skipped Details CI/CD Pipeline / Staging E2E Tests (pull_request) Has been skipped Details CI/CD Pipeline / Staging API Integration Tests (pull_request) Has been skipped Details CI/CD Pipeline / Deploy Production (pull_request) Has been skipped Details CI/CD Pipeline / Production Browser E2E (pull_request) Has been skipped Details - SpeedEngine 抽象层：SpeedConfig + SpeedEngine，支持 0.25x~4x 变速 - 视频调速：基于 FFmpeg setpts，在 clip 预处理环节插入 - 音频调速：基于 atempo，超范围自动多级串联（如 4x=2.0*2.0） - 音画同步：视频音频同时调速，音调自动修正 - 分段调速：每个 clip 独立 playback_speed 字段 - 整段调速：所有 clip 设相同 speed 即可实现 - 降级策略：速度超出范围自动钳制，不阻断渲染 - 领域模型：EditPlanClip 新增 playback_speed 字段 - 数据库：EditPlanClipModel 新增 playback_speed 列 - API：create_clip / update_clip 支持 playback_speed 参数 - 45 个新增单测全绿 + 100 个现有测试全绿，无回归	2026-07-14 11:32:26 +08:00