{"servers":[{"url":"https://api.modellix.ai/api/v1/bytedance/seedance-2.5-t2v"}],"post":{"description":"[Core Function] Seedance 2.5 T2V is ByteDance Dreamina Seedance 2.5 text-to-video generation. [Strengths] It generates longer clips up to 30 seconds at 480p/720p with optional mp4 or mov output and native audio generation. [Best For] Highly recommended for: longer-form text-to-video storytelling, social clips beyond 15 seconds, and Seedance workflows that need mov output. [Limitations] Do NOT use this model if the user provides images, video, or audio as inputs. Do NOT use this model when the user requires 1080p or 4k output. [Routing] Prefer Seedance 2.5 T2V when the user needs more than 15 seconds of text-to-video. Use Seedance 2.0 T2V when 1080p or 4k is required. Use Seedance 2.5 I2V or V2V when media inputs are provided.","operationId":"seedance25T2vAsync","requestBody":{"content":{"application/json":{"examples":{"advanced":{"summary":"Longer clip with mov output","value":{"camera_fixed":false,"duration":20,"generate_audio":true,"output_format":"mov","prompt":"A drone shot flying over misty forests at sunrise","ratio":"16:9","resolution":"720p"}},"basic":{"summary":"Basic text-to-video","value":{"prompt":"A cinematic mountain road at dusk with smooth camera motion"}},"square_social":{"summary":"Square social format","value":{"duration":8,"prompt":"A rotating product showcase on a clean studio background","ratio":"1:1","resolution":"480p"}}},"schema":{"description":"Text-only request. Required: prompt. Images, video, and audio inputs are not supported on T2V.","properties":{"camera_fixed":{"default":false,"description":"Whether to keep the camera fixed during generation","example":false,"type":"boolean"},"duration":{"default":5,"description":"Video duration in seconds. Allowed values are integers from 4 to 30","enum":[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],"example":5,"type":"integer"},"execution_expires_after":{"default":172800,"description":"Task expiration time in seconds","example":172800,"maximum":259200,"minimum":3600,"type":"integer"},"generate_audio":{"default":true,"description":"Whether to generate an audio track with the video","example":true,"type":"boolean"},"output_format":{"default":"mp4","description":"Output video container. mp4 for general playback; mov for higher color precision in editing workflows","enum":["mp4","mov"],"example":"mp4","type":"string"},"prompt":{"description":"Text prompt describing the desired video. Maximum 10000 characters","example":"A cinematic mountain road at dusk with smooth camera motion","maxLength":10000,"minLength":1,"type":"string"},"ratio":{"default":"16:9","description":"Specifies the aspect ratio for the generated video","enum":["21:9","16:9","4:3","1:1","3:4","9:16"],"example":"16:9","type":"string"},"resolution":{"default":"720p","description":"Specifies the resolution tier for the generated video. Seedance 2.5 supports 480p and 720p only","enum":["480p","720p"],"example":"720p","type":"string"},"return_last_frame":{"default":false,"description":"Whether to return the last frame of the generated video","example":false,"type":"boolean"},"seed":{"default":-1,"description":"Random number seed for reproducibility. Use -1 for random. Identical seeds cannot guarantee completely identical results","example":-1,"maximum":4294967295,"minimum":-1,"type":"integer"}},"required":["prompt"],"type":"object"}}},"required":true},"responses":{"200":{"content":{"application/json":{"schema":{"properties":{"code":{"description":"Response code, 0 indicates success","example":0,"type":"integer"},"data":{"description":"Detailed data about the submitted asynchronous task.","properties":{"get_result":{"description":"API information to query the task result","properties":{"method":{"description":"HTTP method","example":"GET","type":"string"},"url":{"description":"Full URL to query the task result","example":"https://api.modellix.ai/api/v1/tasks/task-abc123","type":"string"}},"type":"object"},"model_id":{"description":"Model ID","example":"model-123","type":"string"},"status":{"description":"Task status","enum":["pending","processing"],"example":"pending","type":"string"},"task_id":{"description":"Unique task identifier","example":"task-abc123","type":"string"}},"required":["status","task_id","model_id"],"type":"object"},"message":{"description":"Response message","example":"success","type":"string"}},"required":["code","message","data"],"type":"object"}}},"description":"Task submitted successfully"}},"summary":"Seedance 2.5 T2V","x-mint":{"href":"bytedance/seedance-2-5-t2v"}}}