export declare const SEEDANCE_2_5_MODEL = "doubao-seedance-2-5-260628";
export declare const SEEDANCE_2_0_MODEL = "doubao-seedance-2-0-260128";
export declare const SEEDANCE_2_0_FAST_MODEL = "doubao-seedance-2-0-fast-260128";
export declare const SEEDANCE_VIDEO_MODEL_IDS: readonly ["doubao-seedance-2-5-260628", "doubao-seedance-2-0-260128", "doubao-seedance-2-0-fast-260128"];
export type SeedanceVideoModel = (typeof SEEDANCE_VIDEO_MODEL_IDS)[number];
export type SeedanceCreateMode = 't2v' | 'i2v_first' | 'i2v_first_last' | 'multimodal_reference';
export type SeedanceMultimodalTaskIntent = 'reference_generation' | 'video_edit' | 'video_extension';
export type SeedanceOutputFormat = 'mp4' | 'mov';
export declare const SEEDANCE_RATIOS: readonly ["16:9", "4:3", "1:1", "3:4", "9:16", "21:9", "adaptive"];
export interface SeedanceVideoModelCapabilities {
    id: SeedanceVideoModel;
    name: string;
    description: string;
    resolutions: readonly string[];
    defaultResolution: string;
    minimumDuration: number;
    maximumDuration: number;
    defaultDuration: number;
    maximumReferenceImages: number;
    maximumReferenceVideos: number;
    maximumReferenceAudios: number;
    allowsAudioOnlyReference: boolean;
    outputFormats: readonly SeedanceOutputFormat[];
}
export interface SeedanceVideoParameterPolicy {
    capabilities: SeedanceVideoModelCapabilities;
    ratios: readonly string[];
    durations: readonly number[];
    defaultRatio: string;
    defaultDuration: number;
    forcedRatio?: string;
    forcedDuration?: number;
}
export declare function isSeedanceVideoModel(model: string): model is SeedanceVideoModel;
export declare function getSeedanceVideoModelCapabilities(model: SeedanceVideoModel): SeedanceVideoModelCapabilities;
export declare function getSeedanceVideoParameterPolicy(model: SeedanceVideoModel, createMode: SeedanceCreateMode, taskIntent?: SeedanceMultimodalTaskIntent): SeedanceVideoParameterPolicy;