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Kling Video · Video to Audio

Integrate

Model id kling-video/video-to-audio
# 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/kling-video/video-to-audio?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "video": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4"
  }'

# 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: $0.035 35 API credits Run it on this page

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Generates sound effects and background music for a 3-20 s video and returns audio plus dubbed video

Kling · Video

Your first result goes here

Build a request below and run it with your API key. Outputs are copied to our storage, kept forever or 7 days for free.

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

•required video_url
Drop a file, or

Source URL for audio extraction from a video lasting 3.0–20.0 seconds. The file must be .mp4 or .mov and no larger than 100 MB.

Advanced sound_effect_prompt · background_music_prompt · enable_safety_checker · asmr_mode
0 / 200

Prompt describing sound effects, limited to 200 characters.

0 / 200

Prompt describing background music, limited to 200 characters.

POST /run/kling-video/video-to-audio?wait=20 quote → $0.035
# 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/kling-video/video-to-audio?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "video": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4"
  }'

# 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 Kling Video · Video to Audio

Adds sound to a silent or existing clip (.mp4/.mov, 100MB max, 3-20 seconds). Steer it with `sound_effect_prompt` and `background_music_prompt`, each up to 200 characters, and enable `asmr_mode` for detailed, immersive effects. Returns an MP3 audio file and the original video with the new audio applied.

Parameters

Send either the canonical name or the native name, not both. Canonical names

NameType DefaultAllowed Description
enable_safety_checkeroptional
Typeboolean
Defaulttrue
Safety checks can be disabled only with account authorization; requests without authorization always undergo checking.
video_urlrequired video
Typeurl · video
Source URL for audio extraction from a video lasting 3.0–20.0 seconds. The file must be .mp4 or .mov and no larger than 100 MB.
sound_effect_promptoptional
Typestring | null
DefaultCar tires screech as they accelerate in a drag race
≤ 200 characters
Prompt describing sound effects, limited to 200 characters.
background_music_promptoptional
Typestring | null
Defaultintense car race
≤ 200 characters
Prompt describing background music, limited to 200 characters.
asmr_modeoptional
Typeboolean
Defaultfalse
ASMR mode emphasizes fine sound-effect details for highly immersive content.
required Canonical name, also accepted

File parameters take a public https:// URL, a data: URI up to 10 MB, or the file_url of an upload. Files

Output

GET /requests/req_8k2m4q7x1z9c3v5b6n0p2r4t
{
  "id": "req_8k2m4q7x1z9c3v5b6n0p2r4t",
  "object": "request",
  "model": "kling-video/video-to-audio",
  "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": 35,
    "usd": "0.035",
    "charged": 35,
    "refunded": 0
  },
  "input": {
    "video_url": "https://content.doitong.com/video/showcase/v3/gen_fox_cartoon.mp4"
  },
  "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
    },
    "audio": {
      "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}Original video with the dubbed soundtrack added.
audio
object {url, content_type, file_name, file_size}MP3 audio extracted or generated from the video.

More models: Video to Audio

For AI agents: this page as Markdown is at https://doitong.com/developers/models/kling-video/video-to-audio.md. All models and guides: https://doitong.com/developers/llms.txt