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Veo 3.1

Integrate

Model id veo3.1
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://vit.doitong.com/api/v1/run/veo3.1?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "{\n  \"shot\": {\n    \"composition\": \"wide shot centered at eye level, capturing the full view of the factory floor and the assembling motorbike\",\n    \"lens\": \"35mm\",\n    \"frame_rate\": \"24fps\",\n    \"camera_movement\": \"static\"\n  },\n\n  \"subject\": {\n    \"description\": \"a futuristic, strong motorbike assembling itself from scattered parts\",\n    \"wardrobe\": \"\",\n    \"props\": \"mechanical parts, gears, wires, pistons, body panels, wheels\"\n  },\n\n  \"scene\": {\n    \"location\": \"large, clear industrial factory floor\",\n    \"time_of_day\": \"midday\",\n    \"environment\": \"shiny, clean surfaces with strong light and dramatic shadows; the atmosphere is warm and filled with subtle ambient haze\"\n  },\n\n  \"visual_details\": {\n    \"action\": \"motorbike parts fly in from all directions, clicking and locking into place to form a complete, sleek vehicle\",\n    \"special_effects\": \"electric zaps, soft glows, heat distortion waves rising from the exhaust\",\n    \"hair_clothing_motion\": \"\"\n  },\n\n  \"cinematography\": {\n    \"lighting\": \"bright overhead industrial lighting with sharp contrast, emphasizing form and texture\",\n    \"color_palette\": \"warm tones with metallic highlights and soft amber reflections\",\n    \"tone\": \"epic and intense, emphasizing mechanical precision and power\"\n  },\n\n  \"audio\": {\n    \"music\": \"minimalist, deep synthetic pulses that build with the assembly\",\n    \"ambient\": \"deep factory hum, subtle air movements\",\n    \"sound_effects\": \"clicks, whirs, zaps, shinks, thuds, whooshes, crackles, hiss, rumble\",\n    \"mix_level\": \"cinematic mix with prioritized effects and balanced music bed\"\n  },\n\n  \"dialogue\": {\n    \"character\": \"\",\n    \"line\": \"\",\n    \"subtitles\": false\n  }\n}",
    "duration": "4s",
    "resolution": "720p",
    "generate_audio": false
  }'

# Still "queued" or "running"? Poll with the id from the response:
curl "https://vit.doitong.com/api/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"

This request: $0.80 800 API credits Run it on this page

Get API key
Google Text to Video Native audio4K output4–8 sup to 4k #dialogue

Google's flagship video model, 4 to 8 second clips with dialogue and sound, up to 4K.

Examples

Output · ~63 s

Prompt{ "shot": { "composition": "wide shot centered at eye level, capturing the full view of the factory floor and the assembling motorbike", "lens": "35mm", "frame_rate": "24fps", "camera_movement": "static" }, "subject": { "description": "a futuristic, strong motorbike assembling itself from scattered parts", "wardrobe": "", "props": "mechanical parts, gears, wires, pistons, body panels, wheels" }, "scene": { "location": "large, clear industrial factory floor", "time_of_day": "midday", "environment": "shiny, clean surfaces with strong light and dramatic shadows; the atmosphere is warm and filled with subtle ambient haze" }, "visual_details": { "action": "motorbike parts fly in from all directions, clicking and locking into place to form a complete, sleek vehicle", "special_effects": "electric zaps, soft glows, heat distortion waves rising from the exhaust", "hair_clothing_motion": "" }, "cinematography": { "lighting": "bright overhead industrial lighting with sharp contrast, emphasizing form and texture", "color_palette": "warm tones with metallic highlights and soft amber reflections", "tone": "epic and intense, emphasizing mechanical precision and power" }, "audio": { "music": "minimalist, deep synthetic pulses that build with the assembly", "ambient": "deep factory hum, subtle air movements", "sound_effects": "clicks, whirs, zaps, shinks, thuds, whooshes, crackles, hiss, rumble", "mix_level": "cinematic mix with prioritized effects and balanced music bed" }, "dialogue": { "character": "", "line": "", "subtitles": false } }

4s720pgenerate_audio: false$0.80 · 800 API credits

Prompt from @azed_ai on X

Build a request

Controls are generated from the model schema. The code and the price update as you change them.

•required 1674 / 20000

Text description of the desired video for generation.

duration 4 s

Length of the output video.

aspect_ratio default 16:9

Width-to-height ratio for the generated video.

resolution

Resolution used for the output video.

Advanced negative_prompt · safety_tolerance · seed · auto_fix

Negative prompt used to steer video generation.

safety_tolerance default 4

Set content-moderation tolerance between the least restrictive level, 6, and the strictest level, 1, which blocks most content.

Seed value that initializes random-number generation.

POST /run/veo3.1?wait=20 quote → $0.80
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://vit.doitong.com/api/v1/run/veo3.1?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "{\n  \"shot\": {\n    \"composition\": \"wide shot centered at eye level, capturing the full view of the factory floor and the assembling motorbike\",\n    \"lens\": \"35mm\",\n    \"frame_rate\": \"24fps\",\n    \"camera_movement\": \"static\"\n  },\n\n  \"subject\": {\n    \"description\": \"a futuristic, strong motorbike assembling itself from scattered parts\",\n    \"wardrobe\": \"\",\n    \"props\": \"mechanical parts, gears, wires, pistons, body panels, wheels\"\n  },\n\n  \"scene\": {\n    \"location\": \"large, clear industrial factory floor\",\n    \"time_of_day\": \"midday\",\n    \"environment\": \"shiny, clean surfaces with strong light and dramatic shadows; the atmosphere is warm and filled with subtle ambient haze\"\n  },\n\n  \"visual_details\": {\n    \"action\": \"motorbike parts fly in from all directions, clicking and locking into place to form a complete, sleek vehicle\",\n    \"special_effects\": \"electric zaps, soft glows, heat distortion waves rising from the exhaust\",\n    \"hair_clothing_motion\": \"\"\n  },\n\n  \"cinematography\": {\n    \"lighting\": \"bright overhead industrial lighting with sharp contrast, emphasizing form and texture\",\n    \"color_palette\": \"warm tones with metallic highlights and soft amber reflections\",\n    \"tone\": \"epic and intense, emphasizing mechanical precision and power\"\n  },\n\n  \"audio\": {\n    \"music\": \"minimalist, deep synthetic pulses that build with the assembly\",\n    \"ambient\": \"deep factory hum, subtle air movements\",\n    \"sound_effects\": \"clicks, whirs, zaps, shinks, thuds, whooshes, crackles, hiss, rumble\",\n    \"mix_level\": \"cinematic mix with prioritized effects and balanced music bed\"\n  },\n\n  \"dialogue\": {\n    \"character\": \"\",\n    \"line\": \"\",\n    \"subtitles\": false\n  }\n}",
    "duration": "4s",
    "resolution": "720p",
    "generate_audio": false
  }'

# Still "queued" or "running"? Poll with the id from the response:
curl "https://vit.doitong.com/api/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"

Run this request

Your key stays in this browser: it is sent only to the Doitong API and saved (localStorage) only if you tick Remember. Get an API key

About Veo 3.1

Veo 3.1 produces highly realistic footage with lip-synced dialogue, ambient sound and music generated in the same pass, and follows camera and lighting directions closely. Clips are 4, 6 or 8 seconds, landscape or portrait, at 720p, 1080p or 4K. Audio can be switched off for a lower price.

Parameters

NameType DefaultAllowed Description
promptrequired
Typestring
≤ 20,000 characters
Text description of the desired video for generation.
aspect_ratiooptional
Typeenum
Default16:9
16:99:16
Width-to-height ratio for the generated video.
durationoptional
Typeenum
Default8s
4s6s8s
Length of the output video.
negative_promptoptional
Typestring | null
Negative prompt used to steer video generation.
resolutionoptional
Typeenum
Default720p
720p1080p4k
Resolution used for the output video.
generate_audiooptional
Typeboolean
Defaulttrue
Controls whether the video includes generated audio.
seedoptional
Typeinteger | null
Seed value that initializes random-number generation.
auto_fixoptional
Typeboolean
Defaulttrue
Automatic rewriting of prompts to try to resolve failures in content-policy checks or other validation.
safety_toleranceoptional
Typeenum
Default4
123456
Set content-moderation tolerance between the least restrictive level, 6, and the strictest level, 1, which blocks most content.
required

Output

GET /requests/req_8k2m4q7x1z9c3v5b6n0p2r4t
{
  "id": "req_8k2m4q7x1z9c3v5b6n0p2r4t",
  "object": "request",
  "model": "veo3.1",
  "status": "succeeded",
  "created_at": "2026-10-20T12:00:00Z",
  "started_at": "2026-10-20T12:00:02Z",
  "completed_at": "2026-10-20T12:00:09Z",
  "queue_position": null,
  "cost": {
    "credits": 800,
    "usd": "0.80",
    "charged": 800,
    "refunded": 0
  },
  "input": {
    "prompt": "A street interviewer in New York asks a passer-by \"Did you hear the news?\" and she laughs \"Everyone has!\"",
    "duration": 8,
    "resolution": "720p"
  },
  "output": {
    "video": {
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.mp4",
      "content_type": "video/mp4",
      "file_name": "0-output.mp4",
      "file_size": 1843200
    }
  },
  "outputs": [
    {
      "type": "video",
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.mp4",
      "content_type": "video/mp4",
      "file_size": 1843200,
      "width": 1280,
      "height": 720,
      "duration": 5,
      "stored": true
    }
  ],
  "error": null,
  "metrics": {
    "inference_seconds": 6.8
  },
  "urls": {
    "self": "https://vit.doitong.com/api/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t",
    "cancel": "https://vit.doitong.com/api/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t/cancel"
  }
}
Your files, your choiceEvery outputs[].url is a copy on our storage: kept forever (paid per GB-month) or 7 days for free, by your account setting or ?storage=.
Same shape on every modeltype, url, content_type, width, height and duration, for images, video and audio alike. output is the model’s own result object.
Fields of output
video
object {url, content_type, file_name, file_size}Video produced by the model.

More models: Text to Video

For AI agents: this page as Markdown is at https://doitong.com/en-GB/developers/models/veo3.1.md. All models and guides: https://doitong.com/developers/llms.txt