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Developers/Seedance 2.5 API

Seedance 2.5 API

Integrate Seedance 2.5 video generation into your app. Generate from text or a starting image, then combine image, video, and audio references in the multimodal workflow.

Get API keyView API docs
Abstract illustration for Seedance 2.5 API
PlaygroundAPIPricingGuideFAQs

Seedance 2.5 API Playground

Use your existing API key and subscription. Submitting a generation uses credits; uploading and preparing a request does not start a generation.

API access is available to subscribers only. Your subscription credits are shared across the website and the API.

View plans

Parameter

18 parameters

Text prompt describing the video to generate (max 20480 chars). Optional only in provider modes whose image input fully defines the generation.(Optional)

Optional input image URL. When provided, the task runs in image-to-video mode.(Optional)

Optional multimodal reference images. Public URLs only; 50 MB per file.(Optional)

maxItems 30

Optional multimodal reference videos. Each video is 4–30 seconds and 50 MB max.(Optional)

maxItems 10

Optional multimodal reference audio. Each audio is 2–30 seconds and 50 MB max.(Optional)

maxItems 10

Optional public URL for the final frame in image-to-video mode.(Optional)

Video duration in seconds.(Optional)

Default: 5

Output aspect ratio.(Optional)

Default: adaptive

Output resolution tier.(Optional)

Default: 720p

Generate synchronized audio along with the video. No separate sound surcharge is configured.(Optional)

Default: true

Enable web-search enhancement for text-to-video generation.(Optional)

Default: false

Return the generated video's last frame as an additional output.(Optional)

Default: false

Output bitrate. High mode produces a file approximately 3–5 times larger than standard.(Optional)

Default: standard

Seed for reproducible generation. Use -1 for a random seed.(Optional)

Default: -1min -1max 2147483647

Output video format. MP4 offers broad compatibility; MOV preserves higher color precision for editing.(Optional)

Default: mp4

Allow the provider to convert supported real-person references into generation assets.(Optional)

Default: true

Choose which image slots should be converted into real-person assets.(Optional)

Default: allmaxItems 41

Fixed-duration reference generation. Video editing and extension are temporarily unavailable.(Optional)

Default: auto

Request code

#!/usr/bin/env bash
set -euo pipefail
# Set this once per intended task; preserve it and the body for transport retries.
: "${VIDMAGE_IDEMPOTENCY_KEY:?Set a unique key for this task}"

SUBMIT_RESPONSE="$(curl --fail-with-body --silent --show-error -X POST "https://vidmage.ai/api/v1/seedance-2-5-ai-video-generator/submit" \
  -H "Authorization: Bearer ${VIDMAGE_API_KEY}" \
  -H "Idempotency-Key: ${VIDMAGE_IDEMPOTENCY_KEY}" \
  -H "Content-Type: application/json" \
  --data-raw '{
  "duration": "5",
  "aspectRatio": "adaptive",
  "resolution": "720p",
  "sound": true,
  "webSearch": false,
  "returnLastFrame": false,
  "bitrateMode": "standard",
  "seed": -1,
  "outputFormat": "mp4",
  "realPersonMode": true,
  "conversionSlots": [
    "all"
  ],
  "omniReferenceTaskType": "auto"
}')"
TASK_ID="$(printf '%s' "$SUBMIT_RESPONSE" | jq -er '.["taskId"]')"

while true; do
  QUERY_RESPONSE="$(curl --fail-with-body --silent --show-error -X POST "https://vidmage.ai/api/v1/seedance-2-5-ai-video-generator/query" \
    -H "Authorization: Bearer ${VIDMAGE_API_KEY}" \
    -H "Content-Type: application/json" \
    --data-raw "{\"taskId\":\"${TASK_ID}\"}")"
  STATUS="$(printf '%s' "$QUERY_RESPONSE" | jq -r '(.status // .data.status // "") | ascii_downcase')"
  case "$STATUS" in
    success|succeeded|completed)
      RESULT="$(printf '%s' "$QUERY_RESPONSE" | jq -r '(.result // .["videoUrl"] // .data["videoUrl"] // empty)')"
      if [ -z "$RESULT" ]; then
        printf '%s' "Result missing; preserve task $TASK_ID and query the same task again. Do not resubmit." >&2
        exit 2
      fi
      printf '%s\n' "$RESULT"
      break
      ;;
    needs_input)
      printf '%s' "Face selection required; preserve task $TASK_ID" >&2
      exit 2
      ;;
    failed|error)
      printf '%s' "$QUERY_RESPONSE" | jq -r '(.message // .error // .data.error // "Task failed")' >&2
      exit 1
      ;;
  esac
  sleep 5
done

Response data

Submit the task to see the API response here.
PlaygroundCapabilities

API documentation

Submit a request, track the task, and retrieve your result.

Inputs
Varies by mode. See input rules below.
Output
Video·videoUrl
Request setup & limitsHeaders, input options and media limits

Request headers

Authorization
Bearer YOUR_API_KEY

Keep your API key on your server.

Content-Type
application/json
Idempotency-Key
YOUR_UNIQUE_KEY

Use a new key per task. Reuse it only when retrying the same submission.

Input options & limits

Request controls follow each task's parameter rules; they do not guarantee output properties.

Seedance 2.5 AI Video Generator

Modes: text-to-video, image-to-video, multimodal-video

Additional inputs; requirements vary by mode

prompt imageUrl imageUrls videoUrls audioUrls lastFrameUrl

Media limits by mode
  • Image To VideoImage: jpg, jpeg, png, webp, bmp, tiff, gif, heic, heif
  • Multimodal VideoImage: jpg, jpeg, png, webp, bmp, tiff, gif, heic, heif; up to 50 MB per file; up to 30 filesVideo: mp4, mov; up to 50 MB per file; up to 10 files; 4 to 30 seconds per file; up to 30 seconds combinedAudio: mp3, wav; up to 50 MB per file; up to 10 files; 2 to 30 seconds per file; up to 30 seconds combined
Request controls
  • duration: 27 accepted values; see parameter rules
  • aspectRatio: "adaptive", "16:9", "4:3", "1:1", "3:4", "9:16", "21:9"
  • resolution: "480p", "720p", "1080p", "2k", "4k"
  • sound: default true
  • webSearch: default false
  • returnLastFrame: default false
  • bitrateMode: "standard", "high"
  • seed: default -1

Input retention and output-link lifetime depend on the API contract. Confirm API-specific retention terms before making promises to your users. Upload guide ↗

Seedance 2.5 AI Video Generator

POST /api/v1/seedance-2-5-ai-video-generator/submit

Full API documentation ↗

Required inputs

Required inputs depend on the selected mode. Check the mode rules below before submitting.

Edit the sample inputs for your own task before submitting.

Seedance 2.5 AI Video Generator request
# Set VIDMAGE_IDEMPOTENCY_KEY to a unique value for this task; preserve it for transport retries.
curl -X POST "https://vidmage.ai/api/v1/seedance-2-5-ai-video-generator/submit" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Idempotency-Key: ${VIDMAGE_IDEMPOTENCY_KEY}" \
  -H "Content-Type: application/json" \
  -d '{"prompt":"A cinematic tea-garden commercial at dusk, with a slow camera drift and native audio for wind in the leaves","duration":"5","aspectRatio":"adaptive","resolution":"720p","sound":true,"webSearch":false,"returnLastFrame":false,"bitrateMode":"standard","seed":-1,"outputFormat":"mp4"}'
# -> { "success": true, "taskId": "...", "creditsConsumed": ... }
Parameters and input rules18 fields
FieldTypeRequiredDefaultMeaning and limits
promptstringNoNot specifiedText prompt describing the video to generate (max 20480 chars). Optional only in provider modes whose image input fully defines the generation. Maximum length: 20480
imageUrlstringNoNot specifiedOptional input image URL. When provided, the task runs in image-to-video mode. No additional field constraint listed.
imageUrlsstring[]NoNot specifiedOptional multimodal reference images. Public URLs only; 50 MB per file. Maximum items: 30
videoUrlsstring[]NoNot specifiedOptional multimodal reference videos. Each video is 4–30 seconds and 50 MB max. Maximum items: 10
audioUrlsstring[]NoNot specifiedOptional multimodal reference audio. Each audio is 2–30 seconds and 50 MB max. Maximum items: 10
lastFrameUrlstringNoNot specifiedOptional public URL for the final frame in image-to-video mode. No additional field constraint listed.
durationstringNo"5"Video duration in seconds. Values: "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30" · Default: "5"
aspectRatiostringNo"adaptive"Output aspect ratio. Values: "adaptive", "16:9", "4:3", "1:1", "3:4", "9:16", "21:9" · Default: "adaptive"
resolutionstringNo"720p"Output resolution tier. Values: "480p", "720p", "1080p", "2k", "4k" · Default: "720p"
soundbooleanNotrueGenerate synchronized audio along with the video. No separate sound surcharge is configured. Default: true
webSearchbooleanNofalseEnable web-search enhancement for text-to-video generation. Default: false
returnLastFramebooleanNofalseReturn the generated video's last frame as an additional output. Default: false
bitrateModestringNo"standard"Output bitrate. High mode produces a file approximately 3–5 times larger than standard. Values: "standard", "high" · Default: "standard"
seednumberNo-1Seed for reproducible generation. Use -1 for a random seed. Default: -1 · Minimum: -1 · Maximum: 2147483647 · Multiple of: 1 · Whole numbers only
outputFormatstringNo"mp4"Output video format. MP4 offers broad compatibility; MOV preserves higher color precision for editing. Values: "mp4", "mov" · Default: "mp4"
realPersonModebooleanNotrueAllow the provider to convert supported real-person references into generation assets. Default: true
conversionSlotsstring[]No["all"]Choose which image slots should be converted into real-person assets. Item values: "all", "firstFrameUrl", "lastFrameUrl", "image1", "image2", "image3", "image4", "image5", "image6", "image7", "image8", "image9", "image10", "image11", "image12", "image13", "image14", "image15", "image16", "image17", "image18", "image19", "image20", "image21", "image22", "image23", "image24", "image25", "image26", "image27", "image28", "image29", "image30", "video1", "video2", "video3", "video4", "video5", "video6", "video7", "video8", "video9", "video10" · Default: ["all"] · Maximum items: 41
omniReferenceTaskTypestringNo"auto"Fixed-duration reference generation. Video editing and extension are temporarily unavailable. Values: "auto", "reference" · Default: "auto"
Mode-specific fields & media limits
Text To Video rules
ControlMode-specific rule
promptRequired; minimum 1 characters; maximum 20480 characters
durationValues: "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30"; mode default: "5"
aspectRatioValues: "adaptive", "16:9", "4:3", "1:1", "3:4", "9:16", "21:9"; mode default: "adaptive"
resolutionValues: "480p", "720p", "1080p", "2k", "4k"; mode default: "720p"
soundBoolean control; default true
webSearchDefault: false
returnLastFrameDefault: false
bitrateModeValues: "standard", "high"; Default: "standard"
seedRange: -1 to 2147483647; Default: -1
outputFormatValues: "mp4", "mov"; Default: "mp4"
Image To Video rules
ControlMode-specific rule
promptOptional; minimum 0 characters; maximum 20480 characters
durationValues: "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30"; mode default: "5"
aspectRatioValues: "adaptive"; mode default: "adaptive"
resolutionValues: "480p", "720p", "1080p", "2k", "4k"; mode default: "720p"
soundBoolean control; default true
imageUrlImage input
lastFrameUrlOptional final-frame image input
returnLastFrameDefault: false
bitrateModeValues: "standard", "high"; Default: "standard"
seedRange: -1 to 2147483647; Default: -1
outputFormatValues: "mp4", "mov"; Default: "mp4"
realPersonModeDefault: true
conversionSlotsMaximum items: 3; Default: ["all"]
Multimodal Video rules
ControlMode-specific rule
promptRequired; minimum 1 characters; maximum 20480 characters
durationValues: "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30"; mode default: "25"
aspectRatioValues: "adaptive", "16:9", "4:3", "1:1", "3:4", "9:16", "21:9"; mode default: "adaptive"
resolutionValues: "480p", "720p", "1080p", "2k", "4k"; mode default: "720p"
soundBoolean control; default true
imageUrlsImage input; up to 30 items
videoUrlsVideo references; up to 10 items
audioUrlsAudio references; up to 10 items
returnLastFrameDefault: false
bitrateModeValues: "standard", "high"; Default: "standard"
seedRange: -1 to 2147483647; Default: -1
outputFormatValues: "mp4", "mov"; Default: "mp4"
realPersonModeDefault: true
conversionSlotsMaximum items: 41; Default: ["all"]
omniReferenceTaskTypeValues: "auto", "reference"; Default: "auto"

Retrieve the result

Save taskId from the accepted submission and send it to this endpoint:

POST /api/v1/seedance-2-5-ai-video-generator/query

Use the same Bearer API key. On completion, read the videoUrl result field.

Task states and recovery ↗
Seedance 2.5 AI Video Generator query
curl -X POST "https://vidmage.ai/api/v1/seedance-2-5-ai-video-generator/query" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "taskId": "TASK_ID_FROM_SUBMIT" }'
# -> { "success": true, "data": { "status": "...", "videoUrl": "https://..." } }

Pricing

See what one image, video, or generation costs in credits. Your API and website activity share the same credit balance.

API credit rates and calculated example request costs
API / workflowExample requestPrice (credits)
Seedance 2.5 AI Video Generatorvideo API5-second video: 300 creditsresolution: 720p · sound: true
How this is calculated
  • 480p: 30 credits / second
  • 720p: 60 credits / second
  • 1080p: 75 credits / second
  • 2k: 90 credits / second
  • 4k: 105 credits / second

Base charge = duration × the selected resolution rate.

Estimate your own request ↗
30–105 credits / secondBase rate varies by settings or workflow
Billed in credits. Shared with the website.Active subscription required. Unit rates and examples follow current API credit rules.Billing details⌄

Examples show the charge for the inputs listed above. Resolution, duration, audio, output count and reference media can change the total. Minimum charges and rounding follow the selected API.

Use the Playground to estimate your request before submitting it. Estimates do not start a generation. Subscription and credit-pack prices are listed on the plans page.

Your task’s recorded usage is the source of truth for the final charge.

View plans ↗Billing guide ↗

About Seedance 2.5 API

Short drama tools often need to create a scene and explore different directions. VidMage's Seedance 2.5 API covers video generation with scene descriptions, frame inputs, and image, video, or audio references. Framing and duration follow the selected workflow, while your editor handles episode assembly. To explore Seedance 2.5 in your browser, open VidMage's Seedance 2.5 AI Video Generator.

Seedance 2.5 API capabilities

Generate from text or frames
Create a scene from a prompt, or guide its beginning and ending with image inputs.
Combine media references
Use image, video, and audio references to explain the subjects, movement, and sound guiding your shot.
Control the output
Set duration, framing, resolution, sound, and output options for the selected generation mode.

What you can build

Short drama production

A script beat, a character image, and a performance reference give your scene a clear starting point. Generate the shot with the inputs that match your workflow, then bring the selected clips together in your episode timeline.

Product launch videos

Build a launch sequence around the photos a seller already has. A camera reference can guide the reveal, while the prompt sets the scene: a watch on a studio table, for example, with light moving across its face.

Alternate scene endings

The character reaches the door. Explore several next-shot directions by pairing a clear prompt with the images, video, or audio references that define the scene.

How to use Seedance 2.5 API

  1. Get an API key

    Create a key in the Developer Console and store it on your server. Use it in the Authorization: Bearer header.

  2. Prepare and submit your inputs

    Set up your inputs in the Playground, then copy the matching API request. Send it from your server with a unique Idempotency-Key.

  3. Track the task

    Save the returned taskId and query the same operation until it completes. Keep that identifier if your app stops waiting.

  4. Retrieve the result

    Read videoUrl from the completed task. Preview the result in your app and save a copy to your own storage for later use.

Input tips
Separate frames from references
Use imageUrl for a starting frame, with optional lastFrameUrl and adaptive framing for image-to-video. Use imageUrls for reference images, giving each source a clear role in the prompt.
Choose the reference mode
Use image-to-video for a starting frame and multimodal video for image, video, or audio references. Video editing and extension are temporarily unavailable in the current public contract.
Separate output sound from audio references
sound defaults to true; set it to false to request silent output. audioUrls provides reference material and is separate from the output-audio choice.

Input requirementsUpload local files

Task fields and results

Keep the task identifier with its original request and Idempotency-Key. Query the same capability until it completes, then read the documented result field.

Task identifier
taskId
Query route
POST /api/v1/seedance-2-5-ai-video-generator/query
Completed result
videoUrl
Task states and response structure ↗
Errors, retries and limits

Retry transport failures with the same idempotency key only when the original submission may not have reached the server. For a confirmed task, keep querying the original task instead of submitting a duplicate.

Read error recovery guidance ↗

FAQs

Can I reuse code from another Seedance provider?

Adapt the request body and task handling to VidMage before reusing code from another Seedance provider. Shared model names do not make provider interfaces interchangeable.

Are failed or timed-out requests charged?

A client timeout is not a confirmed task failure. Confirmed failures are automatically refunded only when the refund outcome is certain. Unknown charges or refunds remain pending reconciliation.

Failure and refund handling ↗
How long should my app wait for a result?

The checked contract does not establish a fixed completion time. Choose a local wait budget for your app; it is not an API completion deadline.

Polling and wait budgets ↗
What are the rate and concurrency limits?

Request-rate limits control how often you can call the API; concurrency limits control simultaneous work. The documentation ties both to the stable API key but does not publish numeric limits for this operation. Confirm account limits before planning parallel jobs.

Rate-limit recovery ↗
Can I receive results through a webhook?

The checked request contract documents status queries and does not list a webhook or callback field for these routes. Check the current authenticated OpenAPI contract before making a callback part of your integration.

Query task results ↗Check the current contract ↗

Build your first shot request.

Review the inputs, then use your subscription to test in the live playground.

Build a request ↑

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