Seedance 1.5 Pro Serverless API
Synchronized video and audio generation for dynamic storytelling.
POST /v2/seedance-1.5-pro · submit + poll 1# pip install "segmind>=1.1.0"
2# export SEGMIND_API_KEY="YOUR_API_KEY"
3from segmind import SegmindClient, InferenceFailed, InferenceTimeout
4
5# Async (v2) — recommended for long-running / video models.
6# run() blocks up to 600s; submit_async + job.wait(timeout=...) sets a longer
7# deadline and keeps the request_id so you can re-poll later.
8client = SegmindClient() # reads SEGMIND_API_KEY
9payload = {
10 "first_frame_url": "https://segmind-resources.s3.amazonaws.com/input/2398ce6d-ab67-4c6f-9ef6-144d64fd7b34-first_frame.jpg",
11 "duration": 5,
12 "prompt": "A sleek black Porsche 911 on a coastal cliff road at golden hour - camera slowly orbits 90 degrees around the car revealing the vast ocean backdrop - cinematic smooth orbital camera movement - warm golden backlit glow with lens flares - engine ignition roar fading into crashing ocean waves and coastal wind",
13 "resolution": "720p",
14 "seed": 12345,
15 "camera_fixed": False,
16 "aspect_ratio": "16:9",
17 "generate_audio": True,
18 "skip_moderation": "false",
19}
20job = client.submit_async("seedance-1.5-pro", **payload)
21print(job.request_id) # available immediately
22try:
23 result = job.wait(timeout=900, interval=2.0)
24 print(result["status"]) # COMPLETED
25 print(result.get("output")) # model output (e.g. video URL)
26except InferenceTimeout as e:
27 print("still running:", e.request_id) # re-poll later with this id
28except InferenceFailed as e:
29 print("failed:", e.detail)
30
31# Fast models (<=600s) can use the one-liner instead:
32# result = segmind.run("seedance-1.5-pro", **payload) 1# pip install "segmind>=1.1.0"
2# export SEGMIND_API_KEY="YOUR_API_KEY"
3from segmind import SegmindClient, InferenceFailed, InferenceTimeout
4
5# Async (v2) — recommended for long-running / video models.
6# run() blocks up to 600s; submit_async + job.wait(timeout=...) sets a longer
7# deadline and keeps the request_id so you can re-poll later.
8client = SegmindClient() # reads SEGMIND_API_KEY
9payload = {
10 "first_frame_url": "https://segmind-resources.s3.amazonaws.com/input/2398ce6d-ab67-4c6f-9ef6-144d64fd7b34-first_frame.jpg",
11 "duration": 5,
12 "prompt": "A sleek black Porsche 911 on a coastal cliff road at golden hour - camera slowly orbits 90 degrees around the car revealing the vast ocean backdrop - cinematic smooth orbital camera movement - warm golden backlit glow with lens flares - engine ignition roar fading into crashing ocean waves and coastal wind",
13 "resolution": "720p",
14 "seed": 12345,
15 "camera_fixed": False,
16 "aspect_ratio": "16:9",
17 "generate_audio": True,
18 "skip_moderation": "false",
19}
20job = client.submit_async("seedance-1.5-pro", **payload)
21print(job.request_id) # available immediately
22try:
23 result = job.wait(timeout=900, interval=2.0)
24 print(result["status"]) # COMPLETED
25 print(result.get("output")) # model output (e.g. video URL)
26except InferenceTimeout as e:
27 print("still running:", e.request_id) # re-poll later with this id
28except InferenceFailed as e:
29 print("failed:", e.detail)
30
31# Fast models (<=600s) can use the one-liner instead:
32# result = segmind.run("seedance-1.5-pro", **payload)API Endpoint
https://api.segmind.com/v1/seedance-1.5-proParameters
aspect_ratiorequiredstringSet video shape; 16:9 for widescreen, 9:16 for vertical.
"16:9""adaptive""16:9""4:3""1:1""3:4""9:16"durationrequiredintegerSet video length; 4 for shorts, 10 for extended scenes.
promptrequiredstringDefine animation content; example: Journey through a bustling cityscape.
resolutionrequiredstringChoose video quality; 720p for standard, 1080p for clear detail.
"720p""480p""720p""1080p"camera_fixedoptionalbooleanDecide on camera movement; enable for static scenes like landscapes.
falsefirst_frame_urloptionalstring (uri)Starting frame image for smooth transitions; use https://example.com/start.png for a bright start.
""generate_audiooptionalbooleanGenerate audio if needed; enable for dynamic content.
truelast_frame_urloptionalstring (uri)Ending frame image for coherent transitions; use https://example.com/end.png for a soft close.
""seedoptionalintegerEnsure consistency with a seed; select 12345 for reproducible scenes.
12345Range: 1 - 999999skip_moderationoptionalbooleanBypass BytePlus content moderation pre-filter. Useful when generating artistic content or faces that may trigger false positives. Baseline BytePlus safety policies still apply.
falseResponse Type
Returns: Video
Asynchronous requests (v2)
Use Async for video, long-running (>~60s), or high-concurrency workloads; Sync is simplest for fast image & LLM calls. Async submits a request and you poll it to completion.
- 1
POST /v2/seedance-1.5-proSubmit — returns request_id, status_url, response_url
- 2
GET /v2/requests/{id}/statusPoll — until COMPLETED or FAILED
- 3
GET /v2/requests/{id}Result — final response body
Status states
- A FAILED request is served as HTTP 422 — the body still carries the error detail.
- An unknown or expired request_id returns HTTP 404.
- Results are retained for 1 hour, then expire.
- Content / RAI blocks surface as FAILED, not a separate state.
- Track completion by polling the status endpoint.
Common Error Codes
The API returns standard HTTP status codes. Detailed error messages are provided in the response body.
Bad Request
Invalid parameters or request format
Unauthorized
Missing or invalid API key
Forbidden
Insufficient permissions
Not Found
Model or endpoint not found
Insufficient Credits
Not enough credits to process request
Rate Limited
Too many requests
Server Error
Internal server error
Bad Gateway
Service temporarily unavailable
Timeout
Request timed out