{ jsonpromptstudio }

Runway · updated july 2026

Runway Gen-4.5 JSON prompting guide

Duration2-10s
Resolution720p; output dimensions vary by aspect ratio
FPS24fps or 25fps
Audionone in video generation
Multi-shotsingle shot

Last verified 2026-07-11. Sources: Runway: Creating with Gen-4.5 , Runway API input parameters , Runway API changelog: Gen-4.5

camera controlimage-to-videoreference-driven consistencyproduction workflows

Runway Gen-4.5 is a production-control choice: clear text prompts, image-to-video workflows, camera controls and reference-driven consistency. Use this site's JSON as a shot sheet for the Runway controls as much as a text prompt.

How to use JSON prompts with Runway

Runway rewards short text prompts plus heavy use of its UI controls. The camera block is your settings checklist, the subject block doubles as your reference-image tagging description, and the action block becomes the short text prompt.

Where it wins

Anything requiring take-to-take consistency: brand work, multi-shot narratives with the same cast, and iterating a single shot until the motion is right. No native video audio; plan sound in post.

Prompting rules for Runway Gen-4.5

Example template, Runway Gen-4.5-shaped

The Runway Gen-4.5 tab shows this site's block order for the model. Browse all 438 templates.

Google · duration 4s, 6s, or 8s (8s required for 1080p, 4K, or reference images) · 720p, 1080p, or 4K · audio native · verified 2026-07-11 - click any value to edit
{
  "scene": "Downtown street at golden hour, soft haze",
  "subject": "Young woman with brown hair and denim jacket",
  "action": "Walks toward camera through light traffic",
  "camera": {
    "lens_mm": 35,
    "movement": "dolly_in",
    "movement_speed": "slow"
  },
  "style": "Cinematic, natural light, gentle contrast",
  "audio": "Soft indie guitar",
  "technical": {
    "aspect_ratio": "16:9",
    "seed": 137421,
    "lock_identity": true,
    "lock_style": true,
    "negative_prompt": "extra people, text overlays, hands",
    "duration_seconds": 8,
    "fps": 24,
    "creativity": 0.4
  }
}
  • Veo 3.1 follows structured prompts unusually well: lock camera, lighting and audio as separate JSON fields.
  • Native audio: describe dialogue, ambient sound and music directly in the audio field.
Kuaishou · duration expanded limits; exact caps vary by mode · mode-dependent · audio native audio-visual output · verified 2026-07-11 - click any value to edit
{
  "subject": "Young woman with brown hair and denim jacket",
  "action": "Walks toward camera through light traffic",
  "scene": "Downtown street at golden hour, soft haze",
  "camera": {
    "lens_mm": 35,
    "movement": "dolly_in",
    "movement_speed": "slow"
  },
  "style": "Cinematic, natural light, gentle contrast",
  "audio": "Soft indie guitar",
  "technical": {
    "aspect_ratio": "16:9",
    "seed": 137421,
    "lock_identity": true,
    "lock_style": true,
    "negative_prompt": "extra people, text overlays, hands",
    "duration_seconds": 8,
    "fps": 24,
    "creativity": 0.4
  }
}
  • Kling prompt guidance emphasizes Subject, Movement, Scene, Camera Language and Lighting.
  • Write the action field as a shot note, not a keyword list.
ByteDance · duration 4-15s · 480p, 720p, 1080p, 4K ratios in Runway API · audio native synchronized audio on supported hosts · verified 2026-07-11 - click any value to edit
{
  "camera": {
    "lens_mm": 35,
    "movement": "dolly_in",
    "movement_speed": "slow"
  },
  "subject": "Young woman with brown hair and denim jacket",
  "action": "Walks toward camera through light traffic",
  "scene": "Downtown street at golden hour, soft haze",
  "style": "Cinematic, natural light, gentle contrast",
  "audio": "Soft indie guitar",
  "technical": {
    "aspect_ratio": "16:9",
    "seed": 137421,
    "lock_identity": true,
    "lock_style": true,
    "negative_prompt": "extra people, text overlays, hands",
    "duration_seconds": 8,
    "fps": 24,
    "creativity": 0.4
  }
}
  • Use a strict block order: CAMERA -> SUBJECT -> ACTION -> ENVIRONMENT -> LIGHTING -> STYLE.
  • Keep the camera block to a shot type plus one movement; stacking moves degrades output.
Alibaba · duration workflow-dependent · 720p open-weights TI2V · audio none in base text/image-to-video pipeline · verified 2026-07-11 - click any value to edit
{
  "subject": "Young woman with brown hair and denim jacket",
  "action": "Walks toward camera through light traffic",
  "scene": "Downtown street at golden hour, soft haze",
  "camera": {
    "lens_mm": 35,
    "movement": "dolly_in",
    "movement_speed": "slow"
  },
  "style": "Cinematic, natural light, gentle contrast",
  "technical": {
    "aspect_ratio": "16:9",
    "seed": 137421,
    "lock_identity": true,
    "lock_style": true,
    "negative_prompt": "extra people, text overlays, hands",
    "duration_seconds": 8,
    "fps": 24,
    "creativity": 0.4
  }
}
  • Wan 2.2 is the latest version with genuinely open, downloadable weights.
  • Open-weights Wan 2.2 has no native audio track in the base text/image-to-video pipeline.
Runway · duration 2-10s · 720p; output dimensions vary by aspect ratio · audio none in video generation · verified 2026-07-11 - click any value to edit
{
  "subject": "Young woman with brown hair and denim jacket",
  "action": "Walks toward camera through light traffic",
  "camera": {
    "lens_mm": 35,
    "movement": "dolly_in",
    "movement_speed": "slow"
  },
  "scene": "Downtown street at golden hour, soft haze",
  "style": "Cinematic, natural light, gentle contrast",
  "technical": {
    "aspect_ratio": "16:9",
    "seed": 137421,
    "lock_identity": true,
    "lock_style": true,
    "negative_prompt": "extra people, text overlays, hands",
    "duration_seconds": 8,
    "fps": 24,
    "creativity": 0.4
  }
}
  • Runway recommends clear, direct language; text-to-video should describe both visual elements and motion.
  • Image-to-video prompts should focus on describing the motion of the scene.

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