{"$schema":"https://json-schema.org/draft/2020-12/schema","additionalProperties":false,"properties":{"aspect_ratio":{"default":"16:9","description":"Video aspect ratio","enum":["16:9","4:3","1:1","3:4","9:16","2:3","3:2","21:9"],"type":"string"},"duration":{"anyOf":[{"const":5,"type":"number"},{"const":8,"type":"number"},{"const":10,"type":"number"}],"default":5,"description":"Video duration in seconds"},"generate_audio":{"default":true,"description":"Whether to generate audio with the video","type":"boolean"},"image_input":{"description":"Base64-encoded reference image for image-to-video generation (data:image/...;base64,...). The image will be uploaded to Pixverse automatically.","type":"string"},"motion_mode":{"description":"Motion mode (fast only available when duration=5; 1080p does not support fast)","enum":["normal","fast"],"type":"string"},"negative_prompt":{"description":"Negative text prompt","maxLength":2048,"type":"string"},"prompt":{"description":"Text prompt describing the video to generate","maxLength":2048,"type":"string"},"quality":{"default":"720p","description":"Video quality","enum":["360p","540p","720p","1080p"],"type":"string"},"seed":{"description":"Random seed for reproducibility","maximum":2147483647,"minimum":0,"type":"integer"}},"required":["prompt","duration","aspect_ratio","quality","generate_audio"],"type":"object"}