flova-observational-documentary-short

name	flova-observational-documentary-short
description	Use when 用户要做人文纪录短片、城市记忆、小城旧街区叙事、普通人生活观察、低戏剧性日常事件链、自然光长镜头、生活流纪录影像。

Observational Documentary Short

Mission

用于观察性纪录与城市记忆短片：聚焦真实的人、真实空间、低戏剧性的日常事件链，用自然光、长镜头、微小动作和环境声制作纪录影像。

This skill observes life. It does not make city propaganda, influencer travel videos, or motivational ads.

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:

• human documentary shorts,
• city memory narratives,
• old neighborhood stories,
• ordinary people's lives,
• low-drama slice-of-life films,
• market/tea house/railway/village/street observations,
• documentary-style visuals with natural light and environmental sound.

Do not use it for highly plotted drama, product ads, brand campaigns, or fast social montage.

Canvas-Native Boundary

Follow the JarvisHub Execution Model. Do not assume a specific documentary video model exists.

Typical mapping:

• start frames -> current image generation,
• slow documentary clips -> current first-frame/video generation,
• dynamic shots -> current image/video generation only when necessary,
• audio -> current ambient/BGM/narration tools if available,
• assembly -> current timeline capability.

If a model/tool cannot produce slow documentary motion, return start frames, prompts, and edit plan as artifacts.

Modes

Choose one:

• global_human_documentary: international observational human-life documentary.
• city_memory: small city, old neighborhood, concrete people and spaces, low-drama narrative chain.

Both modes share visual grammar: restraint, natural light, ordinary actions, imperfect reality.

Required Intake

Collect:

• region/location,
• topic/person/community,
• target duration,
• aspect ratio,
• language,
• whether a script exists,
• visual references,
• whether narration is allowed,
• whether BGM is allowed,
• key person/place/object.

If no material exists, ask for:

• where and when it happens,
• who the protagonist is,
• one small dilemma/decision,
• one other key person,
• one recurring object or place.

Core Principles

• Start with people, not city views.
• Show life, do not explain it.
• Avoid big dramatic conflict unless the user provided it.
• Let space act as a character.
• Use small actions: cooking, sewing, washing, waiting, smoking, tea, looking out a window, folding clothes, wiping a table.
• Prefer backs, hands, side profiles, and pauses over frontal performance.
• Let environment sound carry meaning.
• Keep endings open.

Avoid:

• city-promo language,
• motivational summary,
• poverty spectacle,
• value judgment,
• heavy sentimentality,
• TikTok pacing,
• decorative drone shots,
• fast push/pull/orbit,
• polished commercial lighting.

Story Design

For city_memory, build a low-drama event chain:

• opening unresolved line: one action, object, or glance creates a question.
• hidden history between people or place.
• recurring object appears at least twice and changes state/location/meaning.
• later scenes retain traces of earlier events.
• at least one expectation fails quietly.
• final action has double meaning but no explicit answer.

For global_human_documentary, build observational sequence:

• ordinary person in real work/life routine,
• place and environment revealed through activity,
• 6-12 second observational shots,
• no forced plot twist,
• human dignity over exoticism.

Shot Rhythm

Use a mix:

• short shot 2-3s: object insert, environmental detail, reaction cut.
• medium shot 6-10s: main behavior and interaction.
• long shot 11-15s: opening space, emotional settling, ending aftertaste.

For pure documentary mode, avoid shots under 5s unless necessary.

Recommended full short:

• 10-16 shots for 1-3 minutes,
• 60%+ mid/wide observation shots,
• 80% calm/narrative shots,
• 20% or less high-dynamic shots for travel/search/urgent movement.

Shot Design

Each shot must include:

• Scene: location element, time of day, light.
• Subject action: specific body/hand/face action.
• Camera: shot scale, movement, focus strategy.
• Sound: environment or diegetic sound.
• Route: calm/observational or dynamic.

Camera grammar:

• fixed camera,
• slight handheld breathing,
• extremely slow push-in,
• extremely slow pan,
• restrained follow only when the person moves.

Forbidden unless user explicitly asks:

• fast cuts,
• music beat edits,
• spin/orbit,
• decorative aerial shots,
• aggressive slow motion,
• commercial beauty lighting.

Visual Texture

Use:

• natural light: morning, dusk, overcast, window side light, fluorescent interior.
• air: dust, steam, dampness, heat haze, wind.
• low saturation,
• soft highlights,
• detailed shadows,
• real skin tone,
• slight grain,
• imperfect focus/exposure when natural.

City memory details:

• faded slogans,
• QR payment stickers,
• old posters,
• price lists,
• construction noise,
• TV news,
• square-dance music,
• dialect radio,
• plastic stools,
• old tiles,
• wires,
• worn shop signs.

Do not clean the frame too much. Mess can be truth when it belongs to the place.

Prompt Rules

Start-frame prompt formula:

[subject and small action] + [space and social/environment detail] + [air texture] + [natural light] + [shot scale/composition] + [film/documentary color texture] + [reference style]

Video prompt formula:

[restrained camera movement] + [continuous small action] + [small environmental/light change] + [documentary color texture] + [slow observational pacing] + [sound feeling if relevant] + no fast cuts, no subtitles, no random text, no watermark, no music unless audio is intentionally generated inside the clip

Useful references:

• Magnum Photos,
• Leica documentary,
• National Geographic observational,
• Kodak Vision3,
• Fuji Eterna,
• ARRI Alexa Natural,
• Kore-eda-like restraint,
• Jia Zhangke-like city observation.

Avoid copying exact scenes, characters, or dialogue from known films.

Audio

Prefer location sound:

• market noise,
• wind,
• rain,
• bus reverse signal,
• radio,
• TV,
• kitchen sound,
• street vendor,
• distant construction,
• footsteps,
• plastic bag rustle.

BGM is optional and should be minimal:

• ambient,
• sparse instrumental,
• no pop beat,
• low volume,
• never explaining emotion.

Avoid narration that explains the theme. If narration exists, it should be sparse and observational.

Assembly

Editing rules:

• long takes over fast cuts,
• preserve time flow,
• allow 0.5-1s black/sound bridge if useful,
• no flashy transitions,
• no music beat cutting,
• keep environmental sound alive across cuts.

For city memory:

• preserve traces between scenes,
• insert recurring object closeups,
• avoid concluding moral statement.

Quality Review

Check:

• people are central, not city promotion,
• actions are concrete and observable,
• shots are not over-dramatized,
• natural light and air texture are present,
• environmental sound is planned,
• no fast commercial rhythm,
• no over-clean AI look,
• recurring object/space continuity works if using city-memory mode,
• actual media URLs exist before claiming generated.

If a shot feels like generic stock footage, rewrite with person, place, object, and action specificity.

Output Contract

Return:

• mode,
• story_premise,
• final_spec,
• key_elements,
• shot_list,
• start_frame_prompts,
• video_prompts,
• audio_plan,
• media,
• assembly_plan,
• review.

Do not present start-frame prompts as a completed documentary.