{"servers":[{"url":"https://api.modellix.ai/api/v1/minimax/minimax-h3-fl2v"}],"post":{"description":"[Core Function] MiniMax H3 FL2V generates video guided by a first frame, a last frame, or both. [Strengths] It supports first-only, last-only, and first-plus-last conditioning with 4-15 second duration and 768P or 2K output. Output framing follows the input frame imagery. [Best For] Highly recommended for: start-frame animation, end-frame targeting, before-and-after transitions, and storyboard frame bridging. [Limitations] Do NOT use this model for pure text-to-video, reference-image subject remix, or reference-video remix. Provide prompt, duration, resolution, and at least one of first_frame_image or last_frame_image. Do NOT send reference_images, reference_videos, or reference_audios on this endpoint. [Routing] Choose MiniMax H3 FL2V when the user supplies a start and/or end frame. For reference images without frame roles, use MiniMax H3 I2V. For reference videos, use MiniMax H3 V2V. For text only, use MiniMax H3 T2V.","operationId":"minimaxH3FL2VAsync","requestBody":{"content":{"application/json":{"examples":{"both":{"summary":"First and last frame","value":{"duration":5,"first_frame_image":"https://example.com/first.png","last_frame_image":"https://example.com/last.png","prompt":"Transition between frames","resolution":"2K"}},"first_only":{"summary":"First frame only","value":{"duration":5,"first_frame_image":"https://example.com/first.png","prompt":"Camera pulls focus","resolution":"2K"}}},"schema":{"anyOf":[{"required":["first_frame_image"]},{"required":["last_frame_image"]}],"description":"prompt, duration, and resolution are required. Provide at least one of first_frame_image or last_frame_image; both may be set together.","properties":{"duration":{"default":5,"description":"Required video duration in seconds.","enum":[4,5,6,7,8,9,10,11,12,13,14,15],"type":"integer"},"first_frame_image":{"description":"First-frame image URL. Required when last_frame_image is omitted; may be combined with last_frame_image.","minLength":1,"type":"string"},"last_frame_image":{"description":"Last-frame image URL. 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