# Heygen 路 Avatar4 路 Image to Video API > Huuhuisha picha moja ya uso kuwa video ya avatari inayozungumza, ikiwa na mitindo thabiti au yenye maonyesho Hubadilisha picha moja yenye uso unaoonekana wazi kuwa video ya avatari inayozungumza. Ipe `prompt` yenye maandishi ya kutamkwa pamoja na jina la `voice`, au toa `audio_url`, ambayo hubatilisha vyote viwili. `talking_style` hubadilisha kati ya stable (mwendo mdogo) na expressive. Unaweza pia kuweka mwonekano, mandharinyuma, maelezo mafupi ya hiari, na mwonekano kutoka 360p hadi 1080p. - Model id: `heygen/avatar4/image-to-video` - Made by: HeyGen - Category: Lipsync & Avatars - Output: video - Price per second of your input audio: $0.10 / second of input audio (cheapest run $0.10 (100 API credits)) - Run: `POST https://api.doitong.ru/v1/run/heygen/avatar4/image-to-video` - Quote: `POST https://api.doitong.ru/v1/quote/heygen/avatar4/image-to-video` - Docs page: https://doitong.com/sw/developers/models/heygen/avatar4/image-to-video ## Pricing Price: **$0.10 / second of input audio**. Price per second of your input audio: 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 $1.00 = 1000 API credits (10 s input audio 脳 $0.10). 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/heygen/avatar4/image-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 | |---|---|---|---|---|---|---| | `image_url` | `image` | string (image URL) | yes | | | Chanzo cha uhuishaji kinachotolewa kama URL ya picha; chagua picha yenye uso unaoonekana wazi. | | `prompt` | | string \| null | no | | | Maandishi yatakayosemwa na avatar. | | `voice` | | enum (string) \| null | no | | `Warm Pro Narrator`, `Chill Brian`, `Ivy`, `John Doe`, `Monika Sogam`, `Hope `, `Archer `, `Brittney`, `Patrick`, `David Castlemore`, `Michael C`, `Adam Stone `, `Juniper`, `Cassidy `, `Jessica Anne Bogart`, `Arabella`, `Andrew`, `Spuds Oxley `, `Grace Elder`, `Helen`, `Canyon Rivers`, `Derya - Lifelike - Excited 馃ぉ`, `Mellow Marcus`, `Jack Sterling - Broadcaster 馃帣锔廯, `Brenda - UGC - 1.mp4`, `Reid`, `Reagan`, `Terry`, `Jenny`, `Radio Rick`, `Denise`, `Tim in car - Excited 馃ぉ`, `Iskander`, `Thompson`, `Delicate Daisy - Excited 馃ぉ`, `Kingston`, `George UGC 1`, `Bold Blake`, `Jane`, `Expressive Evan`, `Marianne - IA`, `Aaron`, `Modern Recipe Host - Voice 1`, `Willow`, `Cute Chloe - Friendly 馃槉`, `Rafael`, `June - Lifelike`, `Crisp Chloe`, `Slick Simon`, `Nassim - Informative`, `Baritone Ben`, `Maxwell`, `Ellie Faye - Excited 馃ぉ`, `Milani`, `Feisty Fiona - Excited 馃ぉ`, `Professor Dean`, `Rose - UGC - 1.mp4`, `Shona`, `Hudson Wilder`, `Ann - IA`, `Alastair Kensington`, `Oxley`, `Christina`, `Andrew Rizz `, `Peyton`, `Gerardo - Outdoor`, `Chloe - Lifelike`, `Stephanie`, `Anthony - IA`, `Signal - Voice 1`, `Luca`, `Lisa - Voice 1`, `T.W.Tucker`, `Jack Sullivan - Serious 馃槓`, `Winter`, `Mireia - Lifelike`, `Georgia`, `Stella`, `Masha - Lifelike`, `Charming Charles - Friendly 馃槉`, `Serenity`, `Annie - Excited`, `Ralph`, `Bethany`, `Dominic`, `Mason Finn`, `Leena`, `Veteran Victor`, `Tamara`, `Nik Public`, `Calm Chloe`, `Sevik`, `Reilly`, `Raul`, `Imposing Ian`, `Relaxed Ray`, `Dexter - Professional`, `Relaxed Rick`, `Edwin`, `Rupert Blackwood`, `Ginny`, `Hope` | Jina la sauti linalotumika kuchagua sauti ya avatar. | | `audio_url` | `audio` | string (audio URL) \| null | no | | | Sauti ya usawazishaji wa midomo inayotolewa kwa URL ya faili, ikipewa kipaumbele kuliko kidokezo na sauti kila inapopatikana. | | `talking_style` | | enum (string) | no | `stable` | `stable`, `expressive` | Mtindo wa uhuishaji wa usemi: 'stable' huweka mwendo kuwa mdogo, huku 'expressive' ikiongeza uhuishaji zaidi. | | `expression` | | string \| null | no | | | Mwonekano wa uso. | | `background` | | object {type, value} | no | | | Mipangilio ya mandharinyuma. | | `background.type` | | enum (string) | no | `color` | `color`, `image`, `video` | Uteuzi wa aina ya mandharinyuma. | | `background.value` | | string | no | `#FFFFFF` | | Maudhui ya mandharinyuma: rangi ya heksadesimali aina ikiwa ni 'color', au URL aina ikiwa ni 'image' au 'video'. | | `resolution` | | enum (string) | no | `720p` | `360p`, `480p`, `540p`, `720p`, `1080p` | Mwonekano uliowekwa awali wa video: 360p, 480p, 540p, 720p, au 1080p. | | `aspect_ratio` | | enum (string) | no | `16:9` | `16:9`, `9:16`, `4:5`, `5:4`, `1:1`, `auto` | Uteuzi wa uwiano wa picha wa video: 'auto' huomba HeyGen isome na ihifadhi uwiano wa chanzo, ikitumia '16:9' ikiwa haiwezi. Chaguo dhahiri za uwiano ni '16:9', '9:16', '4:5', '5:4', na '1:1'. | | `caption` | | boolean | no | `false` | | Hudhibiti ikiwa video itakuwa na manukuu. | | `enable_safety_checker` | | boolean | no | `true` | | Ukaguzi unaweza kulegezwa kwa kuweka false, ikiwa mpigaji simu ameidhinishwa. | File parameters (`image`, `audio`) 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 { "image": "https://content.doitong.com/images/showcase/v3/avatar/talking_avatar.jpg" } ``` A fuller example: ```json { "image_url": "https://content.doitong.com/images/showcase/v3/avatar/talking_avatar.jpg", "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/heygen/avatar4/image-to-video?wait=20" \ -H "Authorization: Bearer $DOITONG_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "image_url": "https://content.doitong.com/images/showcase/v3/avatar/talking_avatar.jpg", "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 $DOITONG_API_KEY" ``` ### JavaScript ```javascript const API = "https://api.doitong.ru/v1"; const headers = { "Authorization": "Bearer " + process.env.DOITONG_API_KEY, "Content-Type": "application/json", }; // Run the model; wait up to 20 s for the finished result in the same call let res = await fetch(API + "/run/heygen/avatar4/image-to-video?wait=20", { method: "POST", headers, body: JSON.stringify({ "image_url": "https://content.doitong.com/images/showcase/v3/avatar/talking_avatar.jpg", "audio_url": "https://content.doitong.com/audio/showcase/v3/tools/dub_es.mp3" }), }); let request = await res.json(); if (!res.ok) throw new Error(request.error.code + ": " + request.error.message); // Not finished yet: long-poll until it is while (request.status === "queued" || request.status === "running") { res = await fetch(API + "/requests/" + request.id + "?wait=20", { headers }); request = await res.json(); } if (request.status !== "succeeded") throw new Error(JSON.stringify(request.error)); console.log(request.outputs.map((o) => o.url), request.cost.credits + " API credits ($" + request.cost.usd + ")"); ``` ### Python ```python import os import requests API = "https://api.doitong.ru/v1" headers = {"Authorization": "Bearer " + os.environ["DOITONG_API_KEY"]} payload = { "image_url": "https://content.doitong.com/images/showcase/v3/avatar/talking_avatar.jpg", "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/heygen/avatar4/image-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": "heygen/avatar4/image-to-video", "input": { "image_url": "https://content.doitong.com/images/showcase/v3/avatar/talking_avatar.jpg", "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": "heygen/avatar4/image-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": 1000, "usd": "1.00", "charged": 1000, "refunded": 0 }, "input": { "image_url": "https://content.doitong.com/images/showcase/v3/avatar/talking_avatar.jpg", "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 } }, "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} | Faili ya video inayotokana. | ## Related models - [Heygen 路 Avatar4 路 Digital Twin](https://doitong.com/developers/models/heygen/avatar4/digital-twin.md) (`heygen/avatar4/digital-twin`): $0.10 / second of input audio - [Kling AI Avatar 2.0 Pro](https://doitong.com/developers/models/kling-video/ai-avatar/v2/pro.md) (`kling-video/ai-avatar/v2/pro`): $0.115 / second of input audio - [Sync Lipsync 3](https://doitong.com/developers/models/sync-lipsync/v3.md) (`sync-lipsync/v3`): $8.00 / minute of output video - [VEED Fabric 1.0](https://doitong.com/developers/models/veed/fabric-1.0.md) (`veed/fabric-1.0`): from $0.08 / second of input audio - [Heygen Lipsync - Precision](https://doitong.com/developers/models/heygen/v3/lipsync/precision.md) (`heygen/v3/lipsync/precision`): $0.10 / second of output video - [Heygen Lipsync - Speed](https://doitong.com/developers/models/heygen/v3/lipsync/speed.md) (`heygen/v3/lipsync/speed`): $0.05 / second of output video - [Heygen v5 Digital Twin](https://doitong.com/developers/models/heygen/avatar5/digital-twin.md) (`heygen/avatar5/digital-twin`): $0.10 / second of input audio - [Heygen 路 Avatar3 路 Digital Twin](https://doitong.com/developers/models/heygen/avatar3/digital-twin.md) (`heygen/avatar3/digital-twin`): $0.034 / second of input audio ## Links - HTML page: https://doitong.com/developers/models/heygen/avatar4/image-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=heygen/avatar4/image-to-video - Errors: https://doitong.com/developers/docs/errors - Model details as JSON: https://api.doitong.ru/v1/models/heygen/avatar4/image-to-video