Source: https://ailoot.ai/models/en/happyhorse-1-1-r2v/
Canonical: https://ailoot.ai/models/en/happyhorse-1-1-r2v/
Language: en

# happyhorse-1.1-r2v

[Markdown](https://ailoot.ai/models/en/happyhorse-1-1-r2v/index.md) · [JSON](https://ailoot.ai/models/en/happyhorse-1-1-r2v/facts.json)

## [happyhorse-1.1-r2v](https://ailoot.ai/models/en/happyhorse-1-1-r2v/)

A video generation model driven by reference images and a text scenario. Helps preserve the appearance of characters, objects and the visual style in a new scene.

- [**Ailoot · Video** `POST /v1/videos/generations` `happyhorse-1.1-r2v`](https://ailoot.ai/models/en/happyhorse-1-1-r2v/#method-0)
- [**Ailoot · Video** `POST /v1/videos/generations` `happyhorse-r2v`](https://ailoot.ai/models/en/happyhorse-1-1-r2v/#method-1)
- [**Ailoot · Video** `POST /v1/videos/generations` `happyhorse-r2v-latest`](https://ailoot.ai/models/en/happyhorse-1-1-r2v/#method-2)

About the model

This description covers the model’s capabilities. Available in Ailoot inputs, outputs and options are listed for the selected method below.

HappyHorse-1.1-R2V creates a new video scene from reference images and a text prompt. Alibaba designs the model to preserve recognizable characters, objects and visual style while generating movement. The references establish the scene's content and appearance, and the text describes how those elements should interact.

#### The roles of visual references

Between one and nine images can be used. They may define a character, an object, the surroundings or an artistic treatment. The prompt can identify a reference by number and name a particular object in it, linking the visual material to the relevant part of the action. This is especially useful when elements from several images need to be combined in one composition.

Unlike the mode that uses an initial frame, references here guide the content of a new scene. A text prompt is required: it connects the appearance of objects to the action, camera movement and overall staging. The manufacturer highlights visual consistency and cinematic movement. The model generates a new video rather than editing the source images.

JPEG, JPG, PNG and WEBP files of up to 20 MB each are accepted. The shorter dimension must be at least 400 pixels; material at 720P or higher is recommended. This mode takes images and text as its inputs.

#### Duration, framing and audio

The result is saved as MP4 at 24 frames per second. Duration is specified as an integer from 3 to 15 seconds. Resolution can be selected from 480P, 720P and 1080P; audio generation is supported.

Landscape, portrait and square frames are available: 16:9, 9:16, 1:1, 4:3, 3:4, 4:5, 5:4, 9:21 and 21:9. Selecting a format helps define the compositional space of the new scene in advance.

The prompt may be in any language. The limit is 5000 non-Chinese or 2500 Chinese characters, with any excess truncated. The most important reference roles, actions and movements must fit within this length. A random seed can guide similarity between variations, but does not guarantee an exact reproduction of a video.

**Ailoot · Video** `POST /v1/videos/generations` `happyhorse-1.1-r2v`

[`happyhorse-1.1-r2v`](https://ailoot.ai/models/en/#m=happyhorse-1.1-r2v&route=Core&caller=happyhorse-1.1-r2v&fmt=videos)

Alibaba /`happyhorse-1.1-r2v`

Model ID

- `happyhorse-1.1-r2v`
- `happyhorse-r2v`
- `happyhorse-r2v-latest`

### Overview

A video generation model driven by reference images and a text scenario. Helps preserve the appearance of characters, objects and the visual style in a new scene.

Accepted inputs

Text · Images

Results

Video

### Available in Ailoot · inputs & methods

**Ailoot · Video** `POST /v1/videos/generations`

Input types

`text`, `image`

Output types

`video`

Output format

mp4

| Field | Type | Requirement | Values & limits | Default |
| --- | --- | --- | --- | --- |
| Field`model` | Type`string` | RequirementRequired | Values & limits happyhorse-1.1-r2v | Default— |
| Field`prompt` | Type`string` | RequirementRequired | Values & limits Minimum length: 1 | Default— |
| Field`duration` | Type`integer` | RequirementOptional | Values & limits Minimum: 3 Maximum: 15 Unit: seconds | Default5 |
| Field`resolution` | Type`string` | RequirementOptional | Values & limits 480P, 720P, 1080P | Default720P |
| Field`ratio` | Type`string` | RequirementOptional | Values & limits 16:9, 9:16, 1:1, 4:3, 3:4, 4:5, 5:4, 9:21, 21:9 | Default16:9 |
| Field`image_urls` | Type`https_url\|data_image_url[]` | RequirementRequired | Values & limits Minimum items: 1 Maximum items: 9 Maximum decoded bytes: 20,971,520 MIME types: image/jpeg, image/png, image/webp | Default— |

Input material combinations

**reference\_images\_to\_video** · Required: prompt, image\_urls

Method parameters and lifecycle

| Parameter | Contract |
| --- | --- |
| Parameter`content_type` | Contractapplication/json |
| Parameter`required` | Contractmodel, prompt, image\_urls |
| Parameter`material_types` | Contracttext, image |
| Parameter`optional` | Contractduration, resolution, ratio |
| Parameter`duration_integer_range` | Contract3, 15 |
| Parameter`default_duration` | Contract5 |
| Parameter`resolution` | Contract480P, 720P, 1080P |
| Parameter`default_resolution` | Contract720P |
| Parameter`ratio` | Contract16:9, 9:16, 1:1, 4:3, 3:4, 4:5, 5:4, 9:21, 21:9 |
| Parameter`ratio_must_omit` | Contractfalse |
| Parameter`image_urls` | Contract{"min\_count":1,"max\_count":9,"schemes":\["https","data raster base64"\],"max\_data\_image\_bytes":20971520} |

Lifecycle: `submit_once_poll_original`

`GET /v1/videos/{request_id}`

`GET /v1/videos/generations/{request_id}`

`GET /v1/videos/{request_id}/content`

`GET /v1/videos/generations/{request_id}/content`

Method shapes and IDs are exact; supplier capability is separate from admission.

### Pricing

#### Ailoot method rates

Output

$0.18 *per second at 1080p*

Output

$0.07 *per second at 480p*

Output

$0.14 *per second at 720p*

Ailoot reserves an estimated amount before a request. After the result, it settles the final charge from measured usage. Streaming settlement uses the final usage record. [How reservation and settlement work →](https://ailoot.ai/docs/en/billing/reserve/)

### Example requests

#### Ailoot · Video

Image reference

```bash
set -eu
: "${AILOOT_API_KEY:?Set your Ailoot API key}"
: "${AILOOT_IMAGE_URLS_FILE:?Set a JSON file containing your actual reference-image URLs}"
export AILOOT_IMAGE_URLS_FILE
python3 - <<'PY_REQUEST'
import json,os
from pathlib import Path
p=json.loads('{"model": "happyhorse-1.1-r2v", "prompt": "The subject walks slowly toward the camera.", "duration": 5, "resolution": "720P"}')
from urllib.parse import urlsplit
f=Path(os.environ["AILOOT_IMAGE_URLS_FILE"])
if not f.is_file():raise SystemExit("Choose the actual reference URL JSON file")
urls=json.loads(f.read_text())
if not isinstance(urls,list) or not 1<=len(urls)<=9:raise SystemExit("Provide one to nine reference-image URLs")
for u in urls:
    z=urlsplit(u) if isinstance(u,str) else None
    if not z or z.scheme!="https" or not z.netloc or z.username or z.password:raise SystemExit("Each reference must be an actual HTTPS image URL")
p["image_urls"]=urls
p["ratio"]="16:9"
Path("request.json").write_text(json.dumps(p,ensure_ascii=False))
PY_REQUEST
curl --fail-with-body --silent --show-error https://api.ailoot.ai/v1/videos/generations \
  -H "Authorization: Bearer $AILOOT_API_KEY" -H 'Content-Type: application/json' \
  --data-binary @request.json -D response-headers.txt -o result.json
python3 - <<'PY_RESULT'
import json
from pathlib import Path
r=json.loads(Path("result.json").read_text())
print(json.dumps(r))
PY_RESULT
```

### Receive and save results

#### Ailoot · Video

mp4

- `GET /v1/videos/{request_id}`
- `GET /v1/videos/generations/{request_id}`
- `GET /v1/videos/{request_id}/content`
- `GET /v1/videos/generations/{request_id}/content`

##### Check job status

GET status

```bash
set -eu
: "${AILOOT_API_KEY:?Set your Ailoot API key}"
: "${AILOOT_OPERATION_ID:?Set the actual Ailoot operation ID returned by creation}"
export AILOOT_OPERATION_ID
operation_id=$(python3 -c 'import os,urllib.parse;print(urllib.parse.quote(os.environ["AILOOT_OPERATION_ID"],safe=""))')
curl --fail-with-body --silent --show-error "https://api.ailoot.ai/v1/videos/generations/$operation_id" \
  -H "Authorization: Bearer $AILOOT_API_KEY" -o status.json
python3 - <<'PY_STATUS'
import json
from pathlib import Path
r=json.loads(Path("status.json").read_text())
print(json.dumps(r))
if r.get("status")=="completed":
    for x in r.get("data",[]):print(x)
PY_STATUS
```

##### Save all completed assets

GET all completed assets

```bash
set -eu
: "${AILOOT_API_KEY:?Set your Ailoot API key}"
: "${AILOOT_STATUS_FILE:?Set the actual completed status JSON file}"
export AILOOT_STATUS_FILE
python3 - <<'PY_REQUEST'
import json,os
from pathlib import Path
from urllib.parse import urlsplit,urljoin
f=Path(os.environ["AILOOT_STATUS_FILE"])
if not f.is_file():raise SystemExit("Choose the actual completed status file")
r=json.loads(f.read_text())
if r.get("status")!="completed" or not isinstance(r.get("data"),list) or not r["data"]:raise SystemExit("Wait for a completed status with asset paths")
urls=[]
for x in r["data"]:
    if not isinstance(x,str) or "\n" in x or "\r" in x:raise SystemExit("Invalid asset path")
    u=urljoin("https://api.ailoot.ai",x)
    z=urlsplit(u)
    if z.scheme!="https" or z.netloc!="api.ailoot.ai" or z.username or z.password:raise SystemExit("Use the actual Ailoot asset paths from status")
    urls.append(u)
Path("asset-urls.txt").write_text("\n".join(urls)+"\n")
PY_REQUEST
index=0
while IFS= read -r asset_url; do
  curl --fail-with-body --silent --show-error "$asset_url" \
    -H "Authorization: Bearer $AILOOT_API_KEY" -o "video-${index}.mp4"
  index=$((index + 1))
done < asset-urls.txt
```

Other content reads

GET content

```bash
set -eu
: "${AILOOT_API_KEY:?Set your Ailoot API key}"
: "${AILOOT_OPERATION_ID:?Set the actual Ailoot operation ID returned by creation}"
export AILOOT_OPERATION_ID
operation_id=$(python3 -c 'import os,urllib.parse;print(urllib.parse.quote(os.environ["AILOOT_OPERATION_ID"],safe=""))')
curl --fail-with-body --silent --show-error "https://api.ailoot.ai/v1/videos/generations/$operation_id/content" \
  -H "Authorization: Bearer $AILOOT_API_KEY" -o video.mp4
```

##### Keep all completed results

Save every completed video or returned file; retrieve every actual returned asset URL.

Preserve every returned data item/output index. content\_url is first only; fetch every actual content path/asset. GETcontentwithoutindex isnotalloutputs.

##### If the original response needs checking

Read existing original job; never resubmit unknown send.

Response fields

| Field | Type |
| --- | --- |
| Field`id` | Typestring |
| Field`object` | Typestring |
| Field`model` | Typestring |
| Field`status` | Typestring |
| Field`content_url` | Typesigned URL |
| Field`data[]` | Typesigned URL |
| Field`usage` | Typeobject |
| Field`result_pending_check` | Typeboolean |

Errors and next steps

| Response | Condition | Next step |
| --- | --- | --- |
| Response400 · `invalid_request_error` | ConditionInvalid required fields, material representation or parameter value | Next stepCorrect the indicated fields before a new creation request. |
| Response409 · `video_not_ready` | ConditionOriginal result content is not yet available | Next stepPoll the original returned ID and respect Retry-After. |
| Response`server_error` | ConditionThe returned response says the operation or result requires a check | Next stepKeep the original returned operation/task ID, request headers and response; continue supported reads of that original operation. Do not resubmit the creation request. |

### Aliases

#### Model aliases

**Ailoot** [`happyhorse-1.1-r2v`](https://ailoot.ai/models/en/#m=happyhorse-1.1-r2v&route=Core&caller=happyhorse-1.1-r2v&fmt=videos), [`happyhorse-r2v`](https://ailoot.ai/models/en/#m=happyhorse-1.1-r2v&route=Core&caller=happyhorse-r2v&fmt=videos), [`happyhorse-r2v-latest`](https://ailoot.ai/models/en/#m=happyhorse-1.1-r2v&route=Core&caller=happyhorse-r2v-latest&fmt=videos)

#### Method path aliases

Use the method paths shown above.

#### Related caller IDs

[`happyhorse-1.1-r2v`](https://ailoot.ai/models/en/#m=happyhorse-1.1-r2v&route=Core&caller=happyhorse-1.1-r2v&fmt=videos), [`happyhorse-r2v`](https://ailoot.ai/models/en/#m=happyhorse-1.1-r2v&route=Core&caller=happyhorse-r2v&fmt=videos), [`happyhorse-r2v-latest`](https://ailoot.ai/models/en/#m=happyhorse-1.1-r2v&route=Core&caller=happyhorse-r2v-latest&fmt=videos)

**Ailoot · Video** `POST /v1/videos/generations` `happyhorse-r2v`

[`happyhorse-r2v`](https://ailoot.ai/models/en/#m=happyhorse-1.1-r2v&route=Core&caller=happyhorse-r2v&fmt=videos)

Alibaba /`happyhorse-r2v`

Model ID

- `happyhorse-1.1-r2v`
- `happyhorse-r2v`
- `happyhorse-r2v-latest`

### Overview

A video generation model driven by reference images and a text scenario. Helps preserve the appearance of characters, objects and the visual style in a new scene.

Accepted inputs

Text · Images

Results

Video

### Available in Ailoot · inputs & methods

**Ailoot · Video** `POST /v1/videos/generations`

Input types

`text`, `image`

Output types

`video`

Output format

mp4

| Field | Type | Requirement | Values & limits | Default |
| --- | --- | --- | --- | --- |
| Field`model` | Type`string` | RequirementRequired | Values & limits happyhorse-r2v | Default— |
| Field`prompt` | Type`string` | RequirementRequired | Values & limits Minimum length: 1 | Default— |
| Field`duration` | Type`integer` | RequirementOptional | Values & limits Minimum: 3 Maximum: 15 Unit: seconds | Default5 |
| Field`resolution` | Type`string` | RequirementOptional | Values & limits 480P, 720P, 1080P | Default720P |
| Field`ratio` | Type`string` | RequirementOptional | Values & limits 16:9, 9:16, 1:1, 4:3, 3:4, 4:5, 5:4, 9:21, 21:9 | Default16:9 |
| Field`image_urls` | Type`https_url\|data_image_url[]` | RequirementRequired | Values & limits Minimum items: 1 Maximum items: 9 Maximum decoded bytes: 20,971,520 MIME types: image/jpeg, image/png, image/webp | Default— |

Input material combinations

**reference\_images\_to\_video** · Required: prompt, image\_urls

Method parameters and lifecycle

| Parameter | Contract |
| --- | --- |
| Parameter`material_types` | Contracttext, image |
| Parameter`required` | Contractnull |
| Parameter`optional_controls` | Contractnull |

Lifecycle: `submit_once_poll_original`

`GET /v1/videos/{request_id}`

`GET /v1/videos/generations/{request_id}`

`GET /v1/videos/{request_id}/content`

`GET /v1/videos/generations/{request_id}/content`

Method shapes and IDs are exact; supplier capability is separate from admission.

### Pricing

#### Ailoot method rates

Output

$0.18 *per second at 1080p*

Output

$0.07 *per second at 480p*

Output

$0.14 *per second at 720p*

Ailoot reserves an estimated amount before a request. After the result, it settles the final charge from measured usage. Streaming settlement uses the final usage record. [How reservation and settlement work →](https://ailoot.ai/docs/en/billing/reserve/)

### Example requests

#### Ailoot · Video

Image reference

```bash
set -eu
: "${AILOOT_API_KEY:?Set your Ailoot API key}"
: "${AILOOT_IMAGE_URLS_FILE:?Set a JSON file containing your actual reference-image URLs}"
export AILOOT_IMAGE_URLS_FILE
python3 - <<'PY_REQUEST'
import json,os
from pathlib import Path
p=json.loads('{"model": "happyhorse-r2v", "prompt": "The subject walks slowly toward the camera.", "duration": 5, "resolution": "720P"}')
from urllib.parse import urlsplit
f=Path(os.environ["AILOOT_IMAGE_URLS_FILE"])
if not f.is_file():raise SystemExit("Choose the actual reference URL JSON file")
urls=json.loads(f.read_text())
if not isinstance(urls,list) or not 1<=len(urls)<=9:raise SystemExit("Provide one to nine reference-image URLs")
for u in urls:
    z=urlsplit(u) if isinstance(u,str) else None
    if not z or z.scheme!="https" or not z.netloc or z.username or z.password:raise SystemExit("Each reference must be an actual HTTPS image URL")
p["image_urls"]=urls
p["ratio"]="16:9"
Path("request.json").write_text(json.dumps(p,ensure_ascii=False))
PY_REQUEST
curl --fail-with-body --silent --show-error https://api.ailoot.ai/v1/videos/generations \
  -H "Authorization: Bearer $AILOOT_API_KEY" -H 'Content-Type: application/json' \
  --data-binary @request.json -D response-headers.txt -o result.json
python3 - <<'PY_RESULT'
import json
from pathlib import Path
r=json.loads(Path("result.json").read_text())
print(json.dumps(r))
PY_RESULT
```

### Receive and save results

#### Ailoot · Video

mp4

- `GET /v1/videos/{request_id}`
- `GET /v1/videos/generations/{request_id}`
- `GET /v1/videos/{request_id}/content`
- `GET /v1/videos/generations/{request_id}/content`

##### Check job status

GET status

```bash
set -eu
: "${AILOOT_API_KEY:?Set your Ailoot API key}"
: "${AILOOT_OPERATION_ID:?Set the actual Ailoot operation ID returned by creation}"
export AILOOT_OPERATION_ID
operation_id=$(python3 -c 'import os,urllib.parse;print(urllib.parse.quote(os.environ["AILOOT_OPERATION_ID"],safe=""))')
curl --fail-with-body --silent --show-error "https://api.ailoot.ai/v1/videos/generations/$operation_id" \
  -H "Authorization: Bearer $AILOOT_API_KEY" -o status.json
python3 - <<'PY_STATUS'
import json
from pathlib import Path
r=json.loads(Path("status.json").read_text())
print(json.dumps(r))
if r.get("status")=="completed":
    for x in r.get("data",[]):print(x)
PY_STATUS
```

##### Save all completed assets

GET all completed assets

```bash
set -eu
: "${AILOOT_API_KEY:?Set your Ailoot API key}"
: "${AILOOT_STATUS_FILE:?Set the actual completed status JSON file}"
export AILOOT_STATUS_FILE
python3 - <<'PY_REQUEST'
import json,os
from pathlib import Path
from urllib.parse import urlsplit,urljoin
f=Path(os.environ["AILOOT_STATUS_FILE"])
if not f.is_file():raise SystemExit("Choose the actual completed status file")
r=json.loads(f.read_text())
if r.get("status")!="completed" or not isinstance(r.get("data"),list) or not r["data"]:raise SystemExit("Wait for a completed status with asset paths")
urls=[]
for x in r["data"]:
    if not isinstance(x,str) or "\n" in x or "\r" in x:raise SystemExit("Invalid asset path")
    u=urljoin("https://api.ailoot.ai",x)
    z=urlsplit(u)
    if z.scheme!="https" or z.netloc!="api.ailoot.ai" or z.username or z.password:raise SystemExit("Use the actual Ailoot asset paths from status")
    urls.append(u)
Path("asset-urls.txt").write_text("\n".join(urls)+"\n")
PY_REQUEST
index=0
while IFS= read -r asset_url; do
  curl --fail-with-body --silent --show-error "$asset_url" \
    -H "Authorization: Bearer $AILOOT_API_KEY" -o "video-${index}.mp4"
  index=$((index + 1))
done < asset-urls.txt
```

Other content reads

GET content

```bash
set -eu
: "${AILOOT_API_KEY:?Set your Ailoot API key}"
: "${AILOOT_OPERATION_ID:?Set the actual Ailoot operation ID returned by creation}"
export AILOOT_OPERATION_ID
operation_id=$(python3 -c 'import os,urllib.parse;print(urllib.parse.quote(os.environ["AILOOT_OPERATION_ID"],safe=""))')
curl --fail-with-body --silent --show-error "https://api.ailoot.ai/v1/videos/generations/$operation_id/content" \
  -H "Authorization: Bearer $AILOOT_API_KEY" -o video.mp4
```

##### Keep all completed results

Save every completed video or returned file; retrieve every actual returned asset URL.

Preserve every returned data item/output index. content\_url is first only; fetch every actual content path/asset. GETcontentwithoutindex isnotalloutputs.

##### If the original response needs checking

Read existing original job; never resubmit unknown send.

Response fields

| Field | Type |
| --- | --- |
| Field`id` | Typestring |
| Field`object` | Typestring |
| Field`model` | Typestring |
| Field`status` | Typestring |
| Field`content_url` | Typesigned URL |
| Field`data[]` | Typesigned URL |
| Field`usage` | Typeobject |
| Field`result_pending_check` | Typeboolean |

Errors and next steps

| Response | Condition | Next step |
| --- | --- | --- |
| Response400 · `invalid_request_error` | ConditionInvalid required fields, material representation or parameter value | Next stepCorrect the indicated fields before a new creation request. |
| Response409 · `video_not_ready` | ConditionOriginal result content is not yet available | Next stepPoll the original returned ID and respect Retry-After. |
| Response`server_error` | ConditionThe returned response says the operation or result requires a check | Next stepKeep the original returned operation/task ID, request headers and response; continue supported reads of that original operation. Do not resubmit the creation request. |

### Aliases

#### Model aliases

**Ailoot** [`happyhorse-1.1-r2v`](https://ailoot.ai/models/en/#m=happyhorse-1.1-r2v&route=Core&caller=happyhorse-1.1-r2v&fmt=videos), [`happyhorse-r2v`](https://ailoot.ai/models/en/#m=happyhorse-1.1-r2v&route=Core&caller=happyhorse-r2v&fmt=videos), [`happyhorse-r2v-latest`](https://ailoot.ai/models/en/#m=happyhorse-1.1-r2v&route=Core&caller=happyhorse-r2v-latest&fmt=videos)

#### Method path aliases

Use the method paths shown above.

#### Related caller IDs

[`happyhorse-1.1-r2v`](https://ailoot.ai/models/en/#m=happyhorse-1.1-r2v&route=Core&caller=happyhorse-1.1-r2v&fmt=videos), [`happyhorse-r2v`](https://ailoot.ai/models/en/#m=happyhorse-1.1-r2v&route=Core&caller=happyhorse-r2v&fmt=videos), [`happyhorse-r2v-latest`](https://ailoot.ai/models/en/#m=happyhorse-1.1-r2v&route=Core&caller=happyhorse-r2v-latest&fmt=videos)

**Ailoot · Video** `POST /v1/videos/generations` `happyhorse-r2v-latest`

[`happyhorse-r2v-latest`](https://ailoot.ai/models/en/#m=happyhorse-1.1-r2v&route=Core&caller=happyhorse-r2v-latest&fmt=videos)

Alibaba /`happyhorse-r2v-latest`

Model ID

- `happyhorse-1.1-r2v`
- `happyhorse-r2v`
- `happyhorse-r2v-latest`

### Overview

A video generation model driven by reference images and a text scenario. Helps preserve the appearance of characters, objects and the visual style in a new scene.

Accepted inputs

Text · Images

Results

Video

### Available in Ailoot · inputs & methods

**Ailoot · Video** `POST /v1/videos/generations`

Input types

`text`, `image`

Output types

`video`

Output format

mp4

| Field | Type | Requirement | Values & limits | Default |
| --- | --- | --- | --- | --- |
| Field`model` | Type`string` | RequirementRequired | Values & limits happyhorse-r2v-latest | Default— |
| Field`prompt` | Type`string` | RequirementRequired | Values & limits Minimum length: 1 | Default— |
| Field`duration` | Type`integer` | RequirementOptional | Values & limits Minimum: 3 Maximum: 15 Unit: seconds | Default5 |
| Field`resolution` | Type`string` | RequirementOptional | Values & limits 480P, 720P, 1080P | Default720P |
| Field`ratio` | Type`string` | RequirementOptional | Values & limits 16:9, 9:16, 1:1, 4:3, 3:4, 4:5, 5:4, 9:21, 21:9 | Default16:9 |
| Field`image_urls` | Type`https_url\|data_image_url[]` | RequirementRequired | Values & limits Minimum items: 1 Maximum items: 9 Maximum decoded bytes: 20,971,520 MIME types: image/jpeg, image/png, image/webp | Default— |

Input material combinations

**reference\_images\_to\_video** · Required: prompt, image\_urls

Method parameters and lifecycle

| Parameter | Contract |
| --- | --- |
| Parameter`material_types` | Contracttext, image |
| Parameter`required` | Contractnull |
| Parameter`optional_controls` | Contractnull |

Lifecycle: `submit_once_poll_original`

`GET /v1/videos/{request_id}`

`GET /v1/videos/generations/{request_id}`

`GET /v1/videos/{request_id}/content`

`GET /v1/videos/generations/{request_id}/content`

Method shapes and IDs are exact; supplier capability is separate from admission.

### Pricing

#### Ailoot method rates

Output

$0.18 *per second at 1080p*

Output

$0.07 *per second at 480p*

Output

$0.14 *per second at 720p*

Ailoot reserves an estimated amount before a request. After the result, it settles the final charge from measured usage. Streaming settlement uses the final usage record. [How reservation and settlement work →](https://ailoot.ai/docs/en/billing/reserve/)

### Example requests

#### Ailoot · Video

Image reference

```bash
set -eu
: "${AILOOT_API_KEY:?Set your Ailoot API key}"
: "${AILOOT_IMAGE_URLS_FILE:?Set a JSON file containing your actual reference-image URLs}"
export AILOOT_IMAGE_URLS_FILE
python3 - <<'PY_REQUEST'
import json,os
from pathlib import Path
p=json.loads('{"model": "happyhorse-r2v-latest", "prompt": "The subject walks slowly toward the camera.", "duration": 5, "resolution": "720P"}')
from urllib.parse import urlsplit
f=Path(os.environ["AILOOT_IMAGE_URLS_FILE"])
if not f.is_file():raise SystemExit("Choose the actual reference URL JSON file")
urls=json.loads(f.read_text())
if not isinstance(urls,list) or not 1<=len(urls)<=9:raise SystemExit("Provide one to nine reference-image URLs")
for u in urls:
    z=urlsplit(u) if isinstance(u,str) else None
    if not z or z.scheme!="https" or not z.netloc or z.username or z.password:raise SystemExit("Each reference must be an actual HTTPS image URL")
p["image_urls"]=urls
p["ratio"]="16:9"
Path("request.json").write_text(json.dumps(p,ensure_ascii=False))
PY_REQUEST
curl --fail-with-body --silent --show-error https://api.ailoot.ai/v1/videos/generations \
  -H "Authorization: Bearer $AILOOT_API_KEY" -H 'Content-Type: application/json' \
  --data-binary @request.json -D response-headers.txt -o result.json
python3 - <<'PY_RESULT'
import json
from pathlib import Path
r=json.loads(Path("result.json").read_text())
print(json.dumps(r))
PY_RESULT
```

### Receive and save results

#### Ailoot · Video

mp4

- `GET /v1/videos/{request_id}`
- `GET /v1/videos/generations/{request_id}`
- `GET /v1/videos/{request_id}/content`
- `GET /v1/videos/generations/{request_id}/content`

##### Check job status

GET status

```bash
set -eu
: "${AILOOT_API_KEY:?Set your Ailoot API key}"
: "${AILOOT_OPERATION_ID:?Set the actual Ailoot operation ID returned by creation}"
export AILOOT_OPERATION_ID
operation_id=$(python3 -c 'import os,urllib.parse;print(urllib.parse.quote(os.environ["AILOOT_OPERATION_ID"],safe=""))')
curl --fail-with-body --silent --show-error "https://api.ailoot.ai/v1/videos/generations/$operation_id" \
  -H "Authorization: Bearer $AILOOT_API_KEY" -o status.json
python3 - <<'PY_STATUS'
import json
from pathlib import Path
r=json.loads(Path("status.json").read_text())
print(json.dumps(r))
if r.get("status")=="completed":
    for x in r.get("data",[]):print(x)
PY_STATUS
```

##### Save all completed assets

GET all completed assets

```bash
set -eu
: "${AILOOT_API_KEY:?Set your Ailoot API key}"
: "${AILOOT_STATUS_FILE:?Set the actual completed status JSON file}"
export AILOOT_STATUS_FILE
python3 - <<'PY_REQUEST'
import json,os
from pathlib import Path
from urllib.parse import urlsplit,urljoin
f=Path(os.environ["AILOOT_STATUS_FILE"])
if not f.is_file():raise SystemExit("Choose the actual completed status file")
r=json.loads(f.read_text())
if r.get("status")!="completed" or not isinstance(r.get("data"),list) or not r["data"]:raise SystemExit("Wait for a completed status with asset paths")
urls=[]
for x in r["data"]:
    if not isinstance(x,str) or "\n" in x or "\r" in x:raise SystemExit("Invalid asset path")
    u=urljoin("https://api.ailoot.ai",x)
    z=urlsplit(u)
    if z.scheme!="https" or z.netloc!="api.ailoot.ai" or z.username or z.password:raise SystemExit("Use the actual Ailoot asset paths from status")
    urls.append(u)
Path("asset-urls.txt").write_text("\n".join(urls)+"\n")
PY_REQUEST
index=0
while IFS= read -r asset_url; do
  curl --fail-with-body --silent --show-error "$asset_url" \
    -H "Authorization: Bearer $AILOOT_API_KEY" -o "video-${index}.mp4"
  index=$((index + 1))
done < asset-urls.txt
```

Other content reads

GET content

```bash
set -eu
: "${AILOOT_API_KEY:?Set your Ailoot API key}"
: "${AILOOT_OPERATION_ID:?Set the actual Ailoot operation ID returned by creation}"
export AILOOT_OPERATION_ID
operation_id=$(python3 -c 'import os,urllib.parse;print(urllib.parse.quote(os.environ["AILOOT_OPERATION_ID"],safe=""))')
curl --fail-with-body --silent --show-error "https://api.ailoot.ai/v1/videos/generations/$operation_id/content" \
  -H "Authorization: Bearer $AILOOT_API_KEY" -o video.mp4
```

##### Keep all completed results

Save every completed video or returned file; retrieve every actual returned asset URL.

Preserve every returned data item/output index. content\_url is first only; fetch every actual content path/asset. GETcontentwithoutindex isnotalloutputs.

##### If the original response needs checking

Read existing original job; never resubmit unknown send.

Response fields

| Field | Type |
| --- | --- |
| Field`id` | Typestring |
| Field`object` | Typestring |
| Field`model` | Typestring |
| Field`status` | Typestring |
| Field`content_url` | Typesigned URL |
| Field`data[]` | Typesigned URL |
| Field`usage` | Typeobject |
| Field`result_pending_check` | Typeboolean |

Errors and next steps

| Response | Condition | Next step |
| --- | --- | --- |
| Response400 · `invalid_request_error` | ConditionInvalid required fields, material representation or parameter value | Next stepCorrect the indicated fields before a new creation request. |
| Response409 · `video_not_ready` | ConditionOriginal result content is not yet available | Next stepPoll the original returned ID and respect Retry-After. |
| Response`server_error` | ConditionThe returned response says the operation or result requires a check | Next stepKeep the original returned operation/task ID, request headers and response; continue supported reads of that original operation. Do not resubmit the creation request. |

### Aliases

#### Model aliases

**Ailoot** [`happyhorse-1.1-r2v`](https://ailoot.ai/models/en/#m=happyhorse-1.1-r2v&route=Core&caller=happyhorse-1.1-r2v&fmt=videos), [`happyhorse-r2v`](https://ailoot.ai/models/en/#m=happyhorse-1.1-r2v&route=Core&caller=happyhorse-r2v&fmt=videos), [`happyhorse-r2v-latest`](https://ailoot.ai/models/en/#m=happyhorse-1.1-r2v&route=Core&caller=happyhorse-r2v-latest&fmt=videos)

#### Method path aliases

Use the method paths shown above.

#### Related caller IDs

[`happyhorse-1.1-r2v`](https://ailoot.ai/models/en/#m=happyhorse-1.1-r2v&route=Core&caller=happyhorse-1.1-r2v&fmt=videos), [`happyhorse-r2v`](https://ailoot.ai/models/en/#m=happyhorse-1.1-r2v&route=Core&caller=happyhorse-r2v&fmt=videos), [`happyhorse-r2v-latest`](https://ailoot.ai/models/en/#m=happyhorse-1.1-r2v&route=Core&caller=happyhorse-r2v-latest&fmt=videos)

FAQ · happyhorse-1.1-r2v

What inputs and results are available?

`POST /v1/videos/generations` · `happyhorse-1.1-r2v`: `text`, `image` → `video` `POST /v1/videos/generations` · `happyhorse-r2v`: `text`, `image` → `video` `POST /v1/videos/generations` · `happyhorse-r2v-latest`: `text`, `image` → `video`

Which fields does the request use?

`POST /v1/videos/generations` · `happyhorse-1.1-r2v`: `model`, `prompt`, `duration`, `resolution`, `ratio`, `image_urls` `POST /v1/videos/generations` · `happyhorse-r2v`: `model`, `prompt`, `duration`, `resolution`, `ratio`, `image_urls` `POST /v1/videos/generations` · `happyhorse-r2v-latest`: `model`, `prompt`, `duration`, `resolution`, `ratio`, `image_urls`

What limits apply?

`POST /v1/videos/generations` · `happyhorse-1.1-r2v`: `duration.minimum`: `3`; `duration.maximum`: `15` `POST /v1/videos/generations` · `happyhorse-r2v`: `duration.minimum`: `3`; `duration.maximum`: `15` `POST /v1/videos/generations` · `happyhorse-r2v-latest`: `duration.minimum`: `3`; `duration.maximum`: `15`

Connect Ailoot to Claude Code, OpenCode, Hermes or your own app.

## The company and its project portfolio

The company and its project portfolio: millions of customers; monthly sales in the billions.

## Buy tokens at a discount.

Subscription discounts for regular use. Promo codes offer up to 50% off token purchases.

Subscription

Choose a discounted plan for your regular requests.

Promo code: up to 50% off

Enter your code at checkout. The price updates to reflect the current promotion.

Spending in your history

The model, tokens and amount are recorded for each request.

[Choose a subscription](https://ailoot.ai/docs/en/billing/subscriptions/) · [View model prices](https://ailoot.ai/models/en/)

## Connect the API to a product you sell.

Use Ailoot in SaaS, apps and bots under its official service offer and licence agreement. Request a reseller licence for resale.

Commercial application

Add text, image, video and audio generation to paid features in your service.

Reseller licence

Send a description of your project and how you provide access. Request written terms for use and resale.

Documents on the website

The service offer, licence agreement and data processing policy are available before you connect.

[Request a reseller licence](mailto:support@ailoot.ai) · [Service offer and licence agreement](https://ailoot.ai/legal/offer?lang=en)

## Ailoot · The company and its project portfolio





Ailoot combines established operating experience, a large client base, stable service and ongoing KPI control.





The company and its project portfolio: millions of customers; monthly sales in the billions.





Ailoot brings that operating experience to API access for AI features in customer products, agents, applications and automations.