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Framepack · FLF2V

Integrate

Model id framepack/flf2v
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://api.doitong.com/v1/run/framepack/flf2v?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",
    "image": "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg",
    "end_image": "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg"
  }'

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

This request: ≈$0.134 134 API credits Run it on this page

Get API key
Open model Image to Video up to 720p #image-to-video#motion

Framepack video that interpolates from a start image to a required end image

Open model · 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.

Build a request

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

•required

Text instructions for generating a video, limited to 500 characters.

•required image_url
Drop a file, or

URL pointing to the input image.

•required end_image_url
Drop a file, or

URL pointing to the ending input image.

aspect_ratio default 16:9

Aspect ratio for the output video.

resolution default 480p

Resolution for the output video.

default 240

Frame count for the generated output.

Advanced negative_prompt · cfg_scale · guidance_scale · strength · seed · enable_safety_checker
default

Negative prompt applied when generating a video.

default 1

Scale applied to classifier-free guidance during generation.

default 10

Scale of guidance applied during generation.

default 0.8

Weight assigned to the final frame during video generation, increasing that frame's influence as the setting rises.

Seed value for video generation.

POST /run/framepack/flf2v?wait=20 quote → $0.134
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://api.doitong.com/v1/run/framepack/flf2v?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",
    "image": "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg",
    "end_image": "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg"
  }'

# Still "queued" or "running"? Poll with the id from the response:
curl "https://api.doitong.com/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 Framepack · FLF2V

Generates a video that begins at `image_url` and moves toward `end_image_url`, guided by a prompt. The `strength` value (0 to 1, default 0.8) sets how much the final frame influences the result. `num_frames` allows 30 to 1800, default 240. Supports 16:9 or 9:16 and 480p or 720p.

Parameters

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

NameType DefaultAllowed Description
promptrequired
Typestring
Text instructions for generating a video, limited to 500 characters.
negative_promptoptional
Typestring
Default
Negative prompt applied when generating a video.
image_urlrequired image
Typeurl · image
URL pointing to the input image.
seedoptional
Typeinteger | null
Seed value for video generation.
aspect_ratiooptional
Typeenum
Default16:9
16:99:16
Aspect ratio for the output video.
resolutionoptional
Typeenum
Default480p
720p480p
Resolution for the output video.
cfg_scaleoptional
Typenumber
Default1
0 – 7
Scale applied to classifier-free guidance during generation.
guidance_scaleoptional
Typenumber
Default10
0 – 32
Scale of guidance applied during generation.
num_framesoptional
Typeinteger
Default240
30 – 1,800
Frame count for the generated output.
enable_safety_checkeroptional
Typeboolean
Defaultfalse
Safety checker activation; true enables checking.
end_image_urlrequired end_image
Typeurl · image
URL pointing to the ending input image.
strengthoptional
Typenumber
Default0.8
0 – 1
Weight assigned to the final frame during video generation, increasing that frame's influence as the setting rises.
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": "framepack/flf2v",
  "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": 134,
    "usd": "0.134",
    "charged": 134,
    "refunded": 0
  },
  "input": {
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "image_url": "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg",
    "end_image_url": "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg"
  },
  "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
    },
    "seed": 42
  },
  "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.com/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t",
    "cancel": "https://api.doitong.com/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}
seed
integerSeed value used during video generation.

More models: Image to Video

For AI agents: this page as Markdown is at https://doitong.com/en-US/developers/models/framepack/flf2v.md. All models and guides: https://doitong.com/developers/llms.txt