Flova Cinematic Lighting Planner

Cinematic Lighting Planner

Mission

用于电影布光规划：为任何创作流程提供镜头级光型、色温、光向、多角色受光关系和运镜降级策略。

This is usually a module inside another production skill. It should not own the whole video pipeline unless the user's main request is lighting planning.

JarvisHub Execution Model

• 主 Agent 负责编排：读取画布事实、整理任务 brief、按阶段同步 TodoWrite 进度，并把已确认的文本成果写入画布；媒体生成、等待、拼接和评审交给具备相应能力的执行 agent 或当前可用工具。TodoWrite 不是画布写入前置条件。
• 图像、视频和拼接交给具备媒体能力的执行 agent：brief 给出稳定输出身份、用途、真实参考 URL 和关键约束；需要下游引用时必须等待真实 imageUrl / videoUrl，不能把提交态当完成态。
• 多模态验收交给 critic sub-agent：只读取真实媒体并评审，不生成、不补素材。
• 当前已知 canvas 工具集没有通用音频生成、音频驱动口型、末帧抽取或视频直改工具；旁白、BGM、字幕、末帧承接和精准 lip sync 只能作为后期合成计划或 blocked 项，除非本轮工具列表明确暴露对应能力。

When To Use

Use this skill for:

• cinematic lighting plan,
• lighting style from story or image,
• shot-by-shot light design,
• improving cinematic mood,
• multi-character light direction,
• Tyndall/volumetric light,
• noir side light, backlight, top light, under light,
• camera motion fallback when model cannot execute movement.

Canvas-Native Boundary

Follow the JarvisHub Execution Model. Use only model choices exposed by this turn's tool list. This skill outputs planning constraints and prompt fragments that other image/video skills can use.

Intake

Collect:

• input type: text script, image, video, or reference image + background,
• aspect ratio if generating video,
• narrative beat or shot list,
• mood,
• existing light condition,
• whether user wants manual light selection or AI recommendation.

Workflow

1. Analyze scene/story/reference.
2. Build or accept shot list.
3. Select lighting mode: manual or AI recommended.
4. Produce per-shot lighting plan.
5. Inject prompt fragments into image/video prompts.
6. QA generated result and simplify camera/light if needed.

Pause after lighting recommendation if the user asked to approve the look.

Light Types

Narrative Recommendation

Default by beat:

• opening: backlight, soft light, or Tyndall.
• development: side light, hard light, or cold top light.
• turn: Tyndall for hope/reversal, under light for threat, hard light for conflict.
• ending: soft light, backlight, or Tyndall.

When scene physics conflicts with mood, preserve plausibility first. For example, do not force warm sunset backlight into a sealed fluorescent office unless a practical source is present.

Multi-Character Lighting

For conflict:

• opposing light directions,
• warmer light on sympathetic side and cooler light on opposing side when useful,
• no more than two major light systems in one shot.

For alliance/intimacy:

• shared key light,
• main subject slightly brighter,
• secondary subject 50-70% intensity,
• background in ambient shadow.

For three or more:

• choose one lighting protagonist,
• reduce others by distance and importance,
• do not give every character a separate dramatic light.

Shot Lighting Fields

Each shot should include:

• shot_id,
• story_beat,
• mood,
• light_type,
• intensity,
• color_temperature,
• source_position,
• subject_light_priority,
• background_light,
• prompt_fragment,
• avoid.

Camera Motion Fallback

If generated video fails to follow camera movement:

1. Retry with simpler camera wording.
2. Replace camera motion with subject motion when possible.
3. Simplify to pan/push/follow with one direction.
4. Fall back to locked-off shot and preserve lighting.
5. Only switch model/tool with user confirmation if the harness exposes alternatives.

Do not sacrifice subject stability and lighting just to keep a complex camera move.

Prompt Fragments

Backlight:

strong backlight from behind the subject, warm rim light tracing the silhouette, hair and shoulder halo, face partly in deep shadow, high contrast

Cold top light:

harsh cool overhead light, deep shadows under the brow and cheekbones, desaturated blue-grey skin tone, no warm fill

Tyndall:

visible volumetric light shafts cutting through dusty air, warm particles suspended in the beam, subject isolated inside the light cone

Side light:

strong single-source side light from camera-left, one half of the face illuminated, opposite side falls into deep shadow

Soft light:

large diffused warm source, gentle feathered shadows, lifted contrast, intimate natural skin tone

QA

Check:

• light source is physically plausible,
• color temperature fits scene/mood,
• main subject has clear light priority,
• multi-character light does not conflict,
• prompt fragment matches storyboard,
• generated output did not flatten into even light,
• camera fallback did not alter story meaning.