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FLUX 3 Max Keyframes to Video

Integrate

Model id blackforestlabs/flux-3-max/keyframes-to-video
# 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/blackforestlabs/flux-3-max/keyframes-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",
    "keyframes": [
      {
        "image_url": "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg",
        "frame_index": 0
      }
    ]
  }'

# 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: $0.213 213 API credits Run it on this page

Get API key
Black Forest Labs Image to Video Native audio5–20 sup to 1080p #keyframes#image-to-video#control

Generates a video from a prompt and up to 10 keyframe images pinned to frame positions, with optional audio

Made on Doitong

Public works made with FLUX 3 Max by the Doitong community. Reuse a prompt in one click.

Public works shown: 9
Close-up portrait seorang wanita berkulit pucat berdiri setengah tubuh di dalam air berwarna lemb...

Close-up portrait seorang wanita berkulit pucat berdiri setengah tubuh di dalam air berwarna lembut kebiruan, dikelilingi bunga teratai berkelopak penuh yang bermekaran indah di permukaan air. Rambutnya pirang pucat tersanggul longgar dengan beberapa helaian tipis jatuh alami membingkai sisi...

Close-up portrait seorang wanita berkulit pucat berdiri setengah tubuh di dalam air berwarna lemb...

Close-up portrait seorang wanita berkulit pucat berdiri setengah tubuh di dalam air berwarna lembut kebiruan, dikelilingi bunga teratai berkelopak penuh yang bermekaran indah di permukaan air. Rambutnya pirang pucat tersanggul longgar dengan beberapa helaian tipis jatuh alami membingkai sisi...

Prompt Details Seorang wanita berkulit pucat berdiri setengah tubuh di dalam air berwarna lembut ...

Prompt Details Seorang wanita berkulit pucat berdiri setengah tubuh di dalam air berwarna lembut kebiruan, dikelilingi bunga teratai berkelopak penuh yang bermekaran indah di permukaan air. Rambutnya pirang pucat tersanggul longgar dengan beberapa helaian tipis jatuh alami membingkai sisi...

Seorang wanita berkulit pucat berdiri setengah tubuh di dalam air berwarna lembut kebiruan, dikel...

Seorang wanita berkulit pucat berdiri setengah tubuh di dalam air berwarna lembut kebiruan, dikelilingi bunga teratai berkelopak penuh yang bermekaran indah di permukaan air. Rambutnya pirang pucat tersanggul longgar dengan beberapa helaian tipis jatuh alami membingkai sisi wajahnya. Ia memeluk...

​"Potret sinematik ultra-realistis close-up seorang anak laki-laki kecil (balita) yang sangat men...

​"Potret sinematik ultra-realistis close-up seorang anak laki-laki kecil (balita) yang sangat menggemaskan dengan mata cokelat besar yang ekspresif, rambut hitam berantakan yang tebal, mengenakan kaus putih kerah henley. Dia berpose dengan kedua tangan terkatup di depan dada, menunjukkan senyum...

​"Potret sinematik ultra-realistis close-up seorang anak laki-laki kecil (balita) yang sangat men...

​"Potret sinematik ultra-realistis close-up seorang anak laki-laki kecil (balita) yang sangat menggemaskan dengan mata cokelat besar yang ekspresif, rambut hitam berantakan yang tebal, mengenakan kaus putih kerah henley. Dia berpose dengan kedua tangan terkatup di depan dada, menunjukkan senyum...

​"Potret sinematik ultra-realistis close-up seorang anak laki-laki kecil (balita) yang sangat men...

​"Potret sinematik ultra-realistis close-up seorang anak laki-laki kecil (balita) yang sangat menggemaskan dengan mata cokelat besar yang ekspresif, rambut hitam berantakan yang tebal, mengenakan kaus putih kerah henley. Dia berpose dengan kedua tangan terkatup di depan dada, menunjukkan senyum...

Foto sinematik hiper-realistis resolusi tinggi menampilkan seorang pria muda Indonesia dengan tub...

Foto sinematik hiper-realistis resolusi tinggi menampilkan seorang pria muda Indonesia dengan tubuh ramping dan proporsional, rambut hitam pendek agak acak, mengenakan jaket kulit hitam, celana riding fit, dan sepatu motor. Ia sedang melakukan aksi freestyle ekstrem dengan motor sport 500cc...

Build a request

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

•required

Text describing the video's motion between keyframes.

duration 5 s

Length of the output video, measured in seconds.

resolution default 720p

Resolution for the output video.

aspect_ratio default auto

Generated video's aspect ratio, with `auto` matching the first image unless the input is a text prompt, for which it selects 16:9.

•required

Keyframe images placed in the output video according to `frame_index`; provide no more than 10, without repeating an index.

Advanced reasoning_level · seed
reasoning_level default high

Reasoning effort controls the tradeoff between generation speed and the work the harness devotes to understanding the prompt: more effort takes longer.

Generation seed; a random value is used if omitted.

POST /run/blackforestlabs/flux-3-max/keyframes-to-video?wait=20 quote → $0.213
# 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/blackforestlabs/flux-3-max/keyframes-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",
    "keyframes": [
      {
        "image_url": "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg",
        "frame_index": 0
      }
    ]
  }'

# 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 FLUX 3 Max Keyframes to Video

Creates a video that moves between keyframes you pin in time. `keyframes` takes 1 to 10 images with unique `frame_index` values, and `prompt` describes the motion. `duration` runs from 5 to 20 seconds, `resolution` is 720p or 1080p, and `aspect_ratio` includes 21:9 through 9:16 or auto. `reasoning_level` (low or high) and `generate_audio` are also available.

Parameters

NameType DefaultAllowed Description
promptrequired
Typestring
Text describing the video's motion between keyframes.
keyframesrequired
Typeobject[]
≤ 10 items
Keyframe images placed in the output video according to `frame_index`; provide no more than 10, without repeating an index.
keyframes[].image_urlrequired
Typeurl · image
Keyframe image URL; accepts PNG, JPEG, or WebP.
keyframes[].frame_indexrequired
Typeinteger
≥ 0
Keyframe placement uses a distinct frame index for each keyframe, bounded above by `duration * 24`; the output runs at 24 fps.
durationoptional
Typeenum
Default5
567891011121314151617181920
Length of the output video, measured in seconds.
resolutionoptional
Typeenum
Default720p
720p1080p
Resolution for the output video.
reasoning_leveloptional
Typeenum
Defaulthigh
lowhigh
Reasoning effort controls the tradeoff between generation speed and the work the harness devotes to understanding the prompt: more effort takes longer.
aspect_ratiooptional
Typeenum
Defaultauto
auto21:92:116:94:31:13:49:16
Generated video's aspect ratio, with `auto` matching the first image unless the input is a text prompt, for which it selects 16:9.
generate_audiooptional
Typeboolean
Defaulttrue
Controls whether the video includes generated audio.
seedoptional
Typeinteger | null
Generation seed; a random value is used if omitted.
required

Output

GET /requests/req_8k2m4q7x1z9c3v5b6n0p2r4t
{
  "id": "req_8k2m4q7x1z9c3v5b6n0p2r4t",
  "object": "request",
  "model": "blackforestlabs/flux-3-max/keyframes-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": 213,
    "usd": "0.213",
    "charged": 213,
    "refunded": 0
  },
  "input": {
    "prompt": "A red fox trots through fresh snow at sunrise, soft golden light, shallow depth of field",
    "keyframes": [
      {
        "image_url": "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg",
        "frame_index": 0
      }
    ]
  },
  "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,
    "timings": {}
  },
  "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, width, height, fps, duration, num_frames}Video produced by the model.
seed
integerSeed value used during generation.
timings
objectTiming data with prompt expansion, decoding, and upload omitted from `inference`, which measures only the model's video denoising in seconds.

More models: Image to Video

For AI agents: this page as Markdown is at https://doitong.com/developers/models/blackforestlabs/flux-3-max/keyframes-to-video.md. All models and guides: https://doitong.com/developers/llms.txt