feat(#1754): 渲染期画面扰动——让批量视频本身更不同 #1755
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merged 1 commits from 2026-09-07 13:55:52 +08:00
fix/visual-perturbation-variant-render into develop
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| Author | SHA1 | Message | Date | |
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 saas-backend-agent
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73b924bb38 |
feat(#1754): 渲染期画面扰动——让批量视频本身更不同
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问题：批量生成 N=3 视频画面高度相似，仅靠素材顺序区分不够。 修复方案： 1. variant_plan_selector.py 新增 generate_visual_perturbation(rng)： 为每个变体生成随机视觉扰动参数（hflip/zoom_ratio/speed_factor/ brightness_shift），参数范围经校准确保肉眼可感知但不影响质量。 2. edit_plan_service.py ensure_variant_plans： 每个变体 plan 创建后调用 generate_visual_perturbation 并存入 plan.config.visual_perturbation（变体 0 不做 hflip 保持预览方向）。 3. unified_render_service.py 两条渲染路径均应用扰动： - _build_filter_complex（多 clip 路径） - _render_pass_through（单 clip 直通路径） 扰动滤镜顺序：hflip(scale前) → scale+pad → zoom+crop → eq brightness 4. 17 个新单测覆盖：参数范围/概率分布/滤镜生成/plan config 注入。 |