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POST
/
generate-video
cURL
curl --request POST \
  --url https://nano-gpt.com/api/generate-video \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '{
  "model": "longstories",
  "prompt": "A serene lake at sunset with gentle ripples on the water",
  "script": "<string>",
  "conversationUUID": "<string>",
  "projectId": "<string>",
  "framework": "default",
  "shortRequestEnhancer": false,
  "targetLengthInWords": 70,
  "targetLengthInSeconds": 123,
  "directorNotes": "Warm, cozy lighting with focus on people interacting",
  "aspectRatio": "9:16",
  "scriptConfig": {
    "style": "default",
    "targetLengthInSeconds": 30
  },
  "imageConfig": {
    "model": "hidream_dev",
    "loraConfig": {
      "loraSlug": "ghibsky-comic-book"
    }
  },
  "videoConfig": {
    "enabled": true,
    "model": "kling_v2_1_std_5s"
  },
  "voiceoverConfig": {
    "enabled": true,
    "voiceId": "zWDA589rUKXuLnPRDtAG"
  },
  "captionsConfig": {
    "captionsEnabled": true,
    "captionsStyle": "tiktok"
  },
  "effectsConfig": {
    "transition": "fade",
    "floating": true
  },
  "musicConfig": {
    "enabled": true,
    "musicSlug": "gentle_ambient_loop",
    "volume": 0.3,
    "loop": true
  },
  "voice": "pNInz6obpgDQGcFmaJgB",
  "captionsShow": true,
  "captionsStyle": "default",
  "effects": {
    "transition": "fade",
    "floating": false
  },
  "quality": "medium",
  "motion": {
    "enabled": false,
    "strength": 3
  },
  "music": "video-creation/music/dramatic_cinematic_score.mp3",
  "duration": "5s",
  "aspect_ratio": "16:9",
  "negative_prompt": "blur, distort, and low quality",
  "cfg_scale": 0.5,
  "imageDataUrl": "<string>",
  "imageAttachmentId": "<string>",
  "prompt_optimizer": true,
  "num_inference_steps": 30,
  "pro_mode": false,
  "resolution": "720p",
  "num_frames": 123,
  "frames_per_second": 16,
  "seed": 123,
  "enable_safety_checker": true,
  "showExplicitContent": false,
  "enable_prompt_expansion": true,
  "acceleration": true,
  "shift": 123,
  "age_slider": 18,
  "audioEnabled": false,
  "video_quality": "Standard",
  "aspect": "Portrait"
}'
{
  "runId": "<string>",
  "projectId": "<string>",
  "status": "pending",
  "model": "<string>",
  "cost": 123,
  "paymentSource": "<string>",
  "remainingBalance": 123
}

Authorizations

​
x-api-key
string
header
required

Body

application/json

Parameters for video generation across different models and providers

​
model
enum<string>
default:longstories
required

The video model to use for generation

Available options:
longstories,
longstories-kids,
kling-video,
kling-video-v2,
veo2-video,
minimax-video,
hunyuan-video,
hunyuan-video-image-to-video,
wan-video-image-to-video,
kling-v21-standard,
kling-v21-pro,
kling-v21-master,
promptchan-video
​
prompt
string

Text prompt describing the video to generate

Example:

"A serene lake at sunset with gentle ripples on the water"

​
script
string

Fully-written script for LongStories models (takes precedence over prompt)

​
conversationUUID
string

UUID for conversation tracking

​
projectId
string

Project identifier for LongStories models

​
framework
enum<string>
default:default

Story framework for LongStories models

Available options:
default,
emotional_story,
product_showcase,
tutorial
​
shortRequestEnhancer
boolean
default:false

Smart Enhancement: if true, automatically choose better framework and add Director Notes if necessary

​
targetLengthInWords
integer
default:70

Target length in words for LongStories models (legacy parameter)

​
targetLengthInSeconds
integer

Target length in seconds (alternative to words)

​
directorNotes
string

Prompt for the image generation engine (LongStories). Example: 'Warm lighting' or 'Make the first image very impactful'

Example:

"Warm, cozy lighting with focus on people interacting"

​
aspectRatio
enum<string>
default:9:16

Video aspect ratio for LongStories

Available options:
9:16,
16:9
​
scriptConfig
object

Script generation configuration for LongStories

​
imageConfig
object

Image generation configuration for LongStories

​
videoConfig
object

Video generation configuration for LongStories

​
voiceoverConfig
object

Voiceover configuration for LongStories

​
captionsConfig
object

Captions configuration for LongStories

​
effectsConfig
object

Effects configuration for LongStories

​
musicConfig
object

Music configuration for LongStories

​
voice
string

Legacy: Voice ID for narration (use voiceoverConfig.voiceId instead)

Example:

"pNInz6obpgDQGcFmaJgB"

​
captionsShow
boolean
default:true

Legacy: Whether to show captions (use captionsConfig.captionsEnabled instead)

​
captionsStyle
enum<string>
default:default

Legacy: Style for captions (use captionsConfig.captionsStyle instead)

Available options:
default,
minimal,
neon,
cinematic,
fancy,
tiktok,
highlight,
gradient,
instagram,
vida,
manuscripts
​
effects
object

Legacy: Video effects configuration (use effectsConfig instead)

​
quality
enum<string>
default:medium

Legacy: Video quality (handled by videoConfig now)

Available options:
low,
medium,
high
​
motion
object

Legacy: Motion configuration (handled by videoConfig now)

​
music
string

Legacy: Music track (use musicConfig instead)

Example:

"video-creation/music/dramatic_cinematic_score.mp3"

​
duration

Video duration (format varies by model - '5s' for Veo2, '5' for Kling, etc.)

Example:

"5s"

​
aspect_ratio
enum<string>
default:16:9

Aspect ratio for FAL models

Available options:
16:9,
9:16,
1:1,
4:3,
3:4
​
negative_prompt
string

Negative prompt to avoid certain elements

Example:

"blur, distort, and low quality"

​
cfg_scale
number
default:0.5

Classifier-free guidance scale

Required range: 0 <= x <= 20
​
imageDataUrl
string

Base64 data URL of input image for image-to-video models

​
imageAttachmentId
string

Library attachment ID for input image

​
prompt_optimizer
boolean
default:true

Whether to optimize the prompt (MiniMax model)

​
num_inference_steps
integer
default:30

Number of inference steps

Required range: 1 <= x <= 50
​
pro_mode
boolean
default:false

Enable pro mode for Hunyuan Video

​
resolution
enum<string>
default:720p

Video resolution

Available options:
720p,
1080p,
540p
​
num_frames
default:81

Number of frames to generate

​
frames_per_second
integer
default:16

Frames per second

Required range: 5 <= x <= 24
​
seed
integer

Random seed for reproducible results

​
enable_safety_checker
boolean
default:true

Enable safety content filtering

​
showExplicitContent
boolean
default:false

Allow explicit content (inverse of safety checker)

​
enable_prompt_expansion
boolean

Enable automatic prompt expansion

​
acceleration
boolean

Enable acceleration for faster processing

​
shift
number

Shift parameter for certain models

​
age_slider
integer
default:18

Age setting for PromptChan model

Required range: 18 <= x <= 60
​
audioEnabled
boolean
default:false

Enable audio for PromptChan model

​
video_quality
enum<string>
default:Standard

Video quality for PromptChan model

Available options:
Standard,
High
​
aspect
enum<string>
default:Portrait

Aspect setting for PromptChan model

Available options:
Portrait,
Landscape,
Square

Response

Video generation request submitted successfully (asynchronous processing)

​
runId
string
required

Unique identifier for the video generation request

​
status
enum<string>
default:pending
required

Current status of the generation

Available options:
pending,
processing,
completed,
failed
​
model
string
required

The model used for generation

​
projectId
string

Project identifier (for LongStories models)

​
cost
number

Cost of the video generation

​
paymentSource
string

Payment source used (USD or XNO)

​
remainingBalance
number

Remaining balance after the generation

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