# LTX-2.3 22B · Audio to Video API

> Huunda video inayofuata rekodi ya sauti ya ingizo, ikiwa na picha za hiari za fremu ya kwanza na ya mwisho pamoja na camera LoRA

Inahitaji `prompt` na `audio_url`. Kwa chaguomsingi, idadi ya fremu hutokana na urefu wa sauti (`match_audio_length`); vinginevyo `num_frames` (9 hadi 481) hutumika. `image_url` na `end_image_url` zinaweza kuweka fremu ya kwanza na ya mwisho. Hutoa vidhibiti vingi vya usampulishaji kama vile viwango vya mwongozo, `scheduler`, `camera_lora`, na fomati za tokeo zinazojumuisha mp4, webm, mov na GIF.

- Model id: `ltx-2.3-22b/audio-to-video`
- Made by: Lightricks
- Category: Lipsync & Avatars
- Output: video
- Price per megapixel of your output video: $0.00161 / megapixel of output video (cheapest run $0.002 (2 API credits))
- Run: `POST https://api.doitong.ru/v1/run/ltx-2.3-22b/audio-to-video`
- Quote: `POST https://api.doitong.ru/v1/quote/ltx-2.3-22b/audio-to-video`
- Docs page: https://doitong.com/sw/developers/models/ltx-2.3-22b/audio-to-video

## Pricing

Price: **$0.00161 / megapixel of output video**. Price per megapixel of your output video: the input files are measured before the run (length, resolution, frame rate). The quote measures the same files and is exactly what the run charges.

The full example input below costs $0.358 = 358 API credits (223 MP output video × $0.001605).

Prices are the upstream price in USD, paid from the API balance in API credits (1000 API credits = 1 USD). `POST https://api.doitong.ru/v1/quote/ltx-2.3-22b/audio-to-video` with the same JSON body returns the exact price for that input; the quote is exactly what a run charges. Invalid input is never charged and failed or canceled requests are refunded automatically.

## Input parameters

Send either the canonical name or the native field name (not both). Canonical names are the same across models.

| Parameter | Canonical name | Type | Required | Default | Allowed values / range | Description |
|---|---|---|---|---|---|---|
| `prompt` |  | string | yes |  |  | Kidokezo kinachotumika kama msingi wa uzalishaji wa video. |
| `audio_url` | `audio` | string (audio URL) | yes |  |  | URL ya sauti chanzo inayotumika kuzalisha video. |
| `image_url` | `image` | string (image URL) \| null | no |  |  | URL ya picha ya hiari inayobainisha fremu ya mwanzo ya video. |
| `end_image_url` | `end_image` | string (image URL) \| null | no |  |  | URL ya picha inayobainisha fremu ya mwisho ya video. |
| `match_audio_length` |  | boolean | no | `true` |  | Kigeuzi cha uteuzi wa idadi ya fremu: kikiwa kimezimwa hutumia num_frames, huku kikiwa kimewashwa kikokotoa idadi kutoka FPS na muda wa sauti. |
| `num_frames` |  | integer | no | `121` | 9 – 481 | Idadi ya fremu za tokeo lililozalishwa. |
| `video_size` |  | object {width, height} \| enum (string) | no | `landscape_16_9` | `auto`, `square_hd`, `square`, `portrait_4_3`, `portrait_16_9`, `landscape_4_3`, `landscape_16_9` | Vipimo vya video, huku ukubwa wa picha ya ingizo ukipatikana kupitia 'auto' picha inapotolewa. |
| `use_multiscale` |  | boolean | no | `true` |  | Kigeuzi cha uzalishaji wa mizani mingi kwa mshikamano na maelezo bora. Kwa True, video ndogo ya awali huongoza uzalishaji wa pili ambao ukubwa wake unafikia au kuzidi vipimo vilivyoombwa. |
| `fps` |  | number | no | `24` | 1 – 60 | Kasi ya fremu ya video ya tokeo, iliyopimwa kwa fremu kwa sekunde. |
| `num_inference_steps` |  | integer | no | `40` | 8 – 50 | Idadi ya hatua za uelekezaji zilizotekelezwa. |
| `video_cfg_scale` |  | number | no | `3` | 1 – 20 | Mpangilio wa mwongozo wa video: uinue kwa mshikamano na umakini zaidi katika maudhui yaliyozalishwa. Hutumia mwongozo usio na classifier (CFG). |
| `video_stg_scale` |  | number | no | `0` | 0 – 20 | Hudhibiti mshikamano na umakini wa video kupitia kipimo cha Spatiotemporal Guidance (STG); ongeza mpangilio huu ili kuimarisha sifa zote mbili. |
| `video_rescaling_scale` |  | number | no | `0.7` | 0 – 1 | Marekebisho ya kuongeza au kupunguza video kwa kusawazisha mwongozo usio na classifier na mwongozo wa spatiotemporal kama uwiano. |
| `video_modality_scale` |  | number | no | `3` | 0 – 10 | Marekebisho ya modality ya video kwa kusawazisha michango ya video na sauti kama uwiano. |
| `audio_cfg_scale` |  | number | no | `7` | 1 – 20 | Mpangilio wa mwongozo wa sauti: uinue kwa mshikamano na umakini zaidi katika maudhui yaliyozalishwa. Hutumia mwongozo usio na classifier (CFG). |
| `audio_stg_scale` |  | number | no | `0` | 0 – 20 | Hudhibiti mshikamano na umakini wa sauti kupitia kipimo cha Spatiotemporal Guidance (STG); ongeza mpangilio huu ili kuimarisha sifa zote mbili. |
| `audio_rescaling_scale` |  | number | no | `0.7` | 0 – 1 | Marekebisho ya kuongeza au kupunguza sauti kwa kusawazisha mwongozo usio na classifier na mwongozo wa spatiotemporal kama uwiano. |
| `audio_modality_scale` |  | number | no | `3` | 0 – 10 | Marekebisho ya modality ya sauti kwa kusawazisha michango ya video na sauti kama uwiano. |
| `gradient_estimation_gamma` |  | number | no | `2` | 0 – 10 | Mpangilio wa makadirio ya gradient ya kuondoa kelele: 0 huzima makadirio; vinginevyo, thamani hubainisha gamma. |
| `use_restart_sampling` |  | boolean | no | `false` |  | Kigeuzi cha kuanza upya sampuli kwa ubora bora wa video: kukiwasha huongeza kelele kidogo katika kila hatua ya kuondoa kelele. |
| `scheduler` |  | enum (string) | no | `ltx2` | `ltx2`, `linear_quadratic`, `beta` | Uteuzi wa scheduler. |
| `acceleration` |  | enum (string) | no | `regular` | `none`, `regular`, `high`, `full` | Kiwango cha kuongeza kasi kinachotumika kwenye uchakataji. |
| `camera_lora` |  | enum (string) | no | `none` | `dolly_in`, `dolly_out`, `dolly_left`, `dolly_right`, `jib_up`, `jib_down`, `static`, `none` | Uteuzi wa Camera LoRA kwa kudhibiti mwendo katika video iliyozalishwa kwa usahihi zaidi kuliko vidokezo vya mwendo wa kamera pekee. |
| `camera_lora_scale` |  | number | no | `1` | 0 – 1 | Nguvu ya Camera LoRA kwa kudhibiti mwendo katika video iliyozalishwa kwa usahihi zaidi kuliko vidokezo vya mwendo wa kamera pekee. |
| `negative_prompt` |  | string | no | `news broadcast, 3d animation, computer graphics, pc game, console game, video game, cartoon, childish, watermark, logo, text, on screen text, subtitles, titles, signature, slowmo, static` |  | Kidokezo hasi kinachotumika wakati wa uzalishaji wa video. |
| `seed` |  | integer \| null | no |  |  | Thamani ya mbegu inayoanzisha uzalishaji wa nambari nasibu. |
| `enable_prompt_expansion` |  | boolean | no | `true` |  | Hudhibiti ikiwa upanuzi wa kidokezo umewashwa. |
| `enable_safety_checker` |  | boolean | no | `true` |  | Hudhibiti ikiwa ukaguzi wa usalama umewashwa. |
| `video_output_type` |  | enum (string) | no | `X264 (.mp4)` | `X264 (.mp4)`, `VP9 (.webm)`, `PRORES4444 (.mov)`, `GIF (.gif)` | Aina ya tokeo la video inayotokana. |
| `video_quality` |  | enum (string) | no | `high` | `low`, `medium`, `high`, `maximum` | Kiwango cha ubora wa video inayotokana. |
| `video_write_mode` |  | enum (string) | no | `balanced` | `fast`, `balanced`, `small` | Hali ya kuandika ya video inayotokana. |
| `distill_lora_first_pass_scale` |  | number | no | `0.2` | 0 – 1 | Dhibiti kuongeza au kupunguza kwa distill LoRA ya pass ya kwanza, ukitumia 0 kuizima. |
| `distill_lora_second_pass_scale` |  | number | no | `0.5` | 0 – 1 | Dhibiti kuongeza au kupunguza kwa distill LoRA kwa kila pass baada ya ya kwanza. |
| `image_strength` |  | number | no | `1` | 0 – 1 | Nguvu ya ushawishi wa picha kwenye uzalishaji wa video. |
| `end_image_strength` |  | number | no | `1` | 0 – 1 | Dhibiti kiasi ambacho picha ya mwisho huathiri video iliyozalishwa. |
| `audio_strength` |  | number | no | `1` | 0 – 1 | Nguvu ya conditioning ya sauti, ambapo 1.0 hasa huhifadhi ingizo bila mabadiliko. Modeli inaweza kurekebisha sauti katika mipangilio iliyo chini ya 1.0. |
| `preprocess_audio` |  | boolean | no | `true` |  | Hudhibiti ikiwa sauti itachakatwa kabla ya kutumiwa kwa conditioning. |

File parameters (`audio`, `image`, `end_image`) take a public `https://` URL, a `data:` URI up to 10 MB, or the `file_url` of an upload from `POST /files`.

## Example input

Required parameters only:

```json
{
  "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
  "audio": "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3"
}
```

A fuller example:

```json
{
  "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
  "audio_url": "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3"
}
```

## Run it

Set `DOITONG_API_KEY` to a key from https://doitong.com/developers/dashboard#keys. `?wait=20` returns the finished request in the same call when it is ready within 20 seconds; otherwise poll `GET /requests/{id}` (it also accepts `?wait=`), or pass `webhook_url`.

### curl

```bash
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://api.doitong.ru/v1/run/ltx-2.3-22b/audio-to-video?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "audio_url": "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3"
  }'

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

### JavaScript

```javascript
const API = "https://api.doitong.ru/v1";
const headers = {
  "Authorization": "Bearer " + process.env.DOITONG_API_KEY,
  "Content-Type": "application/json",
};

// Run the model; wait up to 20 s for the finished result in the same call
let res = await fetch(API + "/run/ltx-2.3-22b/audio-to-video?wait=20", {
  method: "POST",
  headers,
  body: JSON.stringify({
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "audio_url": "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3"
  }),
});
let request = await res.json();
if (!res.ok) throw new Error(request.error.code + ": " + request.error.message);

// Not finished yet: long-poll until it is
while (request.status === "queued" || request.status === "running") {
  res = await fetch(API + "/requests/" + request.id + "?wait=20", { headers });
  request = await res.json();
}
if (request.status !== "succeeded") throw new Error(JSON.stringify(request.error));
console.log(request.outputs.map((o) => o.url), request.cost.credits + " API credits ($" + request.cost.usd + ")");
```

### Python

```python
import os
import requests

API = "https://api.doitong.ru/v1"
headers = {"Authorization": "Bearer " + os.environ["DOITONG_API_KEY"]}

payload = {
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "audio_url": "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3",
}

# Run the model; wait up to 20 s for the finished result in the same call
r = requests.post(API + "/run/ltx-2.3-22b/audio-to-video", params={"wait": 20}, json=payload, headers=headers)
request = r.json()
if not r.ok:
    raise RuntimeError(request["error"]["code"] + ": " + request["error"]["message"])

# Not finished yet: long-poll until it is
while request["status"] in ("queued", "running"):
    request = requests.get(API + "/requests/" + request["id"], params={"wait": 20}, headers=headers).json()
if request["status"] != "succeeded":
    raise RuntimeError(request["error"])
print([o["url"] for o in request["outputs"]], request["cost"]["credits"], "API credits", "$" + request["cost"]["usd"])
```

### MCP

The MCP server at `https://api.doitong.ru/v1/mcp` exposes the tools `search_models`, `get_model`, `quote`, `run`, `get_request`, `cancel_request`, `list_requests`, `create_upload` and `get_account`. A `run` call for this model:

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "run",
    "arguments": {
      "model_id": "ltx-2.3-22b/audio-to-video",
      "input": {
        "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
        "audio_url": "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3"
      },
      "wait_seconds": 20
    }
  }
}
```

## Response

Every call returns a request object. `status` is one of `queued`, `running`, `succeeded`, `failed`, `canceled`. `outputs` lists the generated files with URLs on our storage (kept forever, or 7 days with `?storage=temporary`; `storage` says which); `output` is the model's own result object with the same URLs.

```json
{
  "id": "req_8k2m4q7x1z9c3v5b6n0p2r4t",
  "object": "request",
  "model": "ltx-2.3-22b/audio-to-video",
  "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": 358,
    "usd": "0.358",
    "charged": 358,
    "refunded": 0
  },
  "input": {
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "audio_url": "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3"
  },
  "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,
      "width": 1024,
      "height": 768,
      "fps": 1.0,
      "duration": 5,
      "num_frames": 1
    },
    "seed": 42,
    "prompt": "A woman speaks to the camera"
  },
  "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://api.doitong.ru/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t",
    "cancel": "https://api.doitong.ru/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t/cancel"
  }
}
```

### Output fields (`output`)

| Field | Type | Description |
|---|---|---|
| `video` | object {url, content_type, file_name, file_size, width, height, fps, duration, num_frames} | Video iliyozalishwa na modeli. |
| `seed` | integer | Thamani ya seed inayotumika kuanzisha uzalishaji wa nambari nasibu. |
| `prompt` | string | Kidokezo kinachotumika kuongoza uzalishaji. |

## Related models

- [LTX-2.3 22B · Text to Video](https://doitong.com/developers/models/ltx-2.3-22b/text-to-video.md) (`ltx-2.3-22b/text-to-video`): $0.00161 / megapixel of output video
- [LTX-2.3 22B · Text to Video · LoRA](https://doitong.com/developers/models/ltx-2.3-22b/text-to-video/lora.md) (`ltx-2.3-22b/text-to-video/lora`): $0.00181 / megapixel of output video
- [LTX-2.3 22B · Image to Video](https://doitong.com/developers/models/ltx-2.3-22b/image-to-video.md) (`ltx-2.3-22b/image-to-video`): $0.00161 / megapixel of output video
- [LTX-2.3 22B · Image to Video · LoRA](https://doitong.com/developers/models/ltx-2.3-22b/image-to-video/lora.md) (`ltx-2.3-22b/image-to-video/lora`): $0.00181 / megapixel of output video
- [LTX 2.3 22B](https://doitong.com/developers/models/ltx-2.3-22b/reference-video-to-video/lora.md) (`ltx-2.3-22b/reference-video-to-video/lora`): $0.00181 / megapixel of output video
- [LTX-2.3 22B · Extend Video](https://doitong.com/developers/models/ltx-2.3-22b/extend-video.md) (`ltx-2.3-22b/extend-video`): $0.00161 / megapixel of output video
- [LTX-2.3 22B · Extend Video · LoRA](https://doitong.com/developers/models/ltx-2.3-22b/extend-video/lora.md) (`ltx-2.3-22b/extend-video/lora`): $0.00181 / megapixel of output video
- [LTX-2.3 22B · Reference Video to Video](https://doitong.com/developers/models/ltx-2.3-22b/reference-video-to-video.md) (`ltx-2.3-22b/reference-video-to-video`): $0.00161 / megapixel of output video

## Links

- HTML page: https://doitong.com/developers/models/ltx-2.3-22b/audio-to-video
- All models and guides for AI agents: https://doitong.com/developers/llms.txt
- OpenAPI 3.1 with this model's typed request body: https://doitong.com/developers/openapi.json?model=ltx-2.3-22b/audio-to-video
- Errors: https://doitong.com/developers/docs/errors
- Model details as JSON: https://api.doitong.ru/v1/models/ltx-2.3-22b/audio-to-video