import type { VideoAsset } from './types.js';
export interface YouTubeReference {
    videoId: string;
    title: string;
    description: string;
    channelTitle: string;
    publishedAt: string;
    thumbnailUrl?: string;
    url: string;
    duration?: string;
    viewCount?: string;
    likeCount?: string;
    license?: string;
    sourceType: 'reference-only';
    allowedForRendering: false;
    untrustedExternalText: true;
    query: string;
}
declare function sanitizeExternalText(value: string | undefined, maxLength: number): string;
export interface ResearchYouTubeInput {
    projectDir: string;
    queries?: string[];
    maxResultsPerQuery?: number;
    regionCode?: string;
    publishedAfter?: string;
    creativeCommonsOnly?: boolean;
    order?: 'relevance' | 'viewCount' | 'date';
}
export declare function researchYouTube(input: ResearchYouTubeInput): Promise<YouTubeReference[]>;
export interface PexelsVideoResult {
    id: number;
    width: number;
    height: number;
    duration: number;
    pageUrl: string;
    author?: string;
    authorUrl?: string;
    previewImage?: string;
    downloadUrl?: string;
    downloadWidth?: number;
    downloadHeight?: number;
    license: 'Pexels License';
    attribution: string;
    query: string;
}
interface PexelsSearchResponse {
    videos?: Array<{
        id: number;
        width: number;
        height: number;
        duration: number;
        url: string;
        image?: string;
        user?: {
            name?: string;
            url?: string;
        };
        video_files?: Array<{
            link?: string;
            width?: number;
            height?: number;
            file_type?: string;
        }>;
    }>;
}
declare function bestPexelsFile(files?: NonNullable<PexelsSearchResponse['videos']>[number]['video_files']): {
    link?: string;
    width?: number;
    height?: number;
    file_type?: string;
};
export interface SearchStockInput {
    projectDir: string;
    queries?: string[];
    orientation?: 'landscape' | 'portrait' | 'square';
    perQuery?: number;
}
export declare function searchStock(input: SearchStockInput): Promise<PexelsVideoResult[]>;
declare function validatePexelsUrl(value: string): URL;
declare function hasMp4Signature(filePath: string): boolean;
export interface DownloadStockSelection {
    id: number;
    downloadUrl: string;
    pageUrl: string;
    author?: string;
    attribution?: string;
}
export declare function downloadStockAssets(projectDir: string, selections: DownloadStockSelection[]): Promise<VideoAsset[]>;
export interface GenerateImageInput {
    projectDir: string;
    prompt: string;
    name?: string;
    model?: 'gpt-image-2' | 'gpt-image-1.5' | 'gpt-image-1' | 'gpt-image-1-mini';
    quality?: 'low' | 'medium' | 'high' | 'auto';
    size?: '1024x1024' | '1024x1536' | '1536x1024';
}
export declare function generateImage(input: GenerateImageInput): Promise<VideoAsset>;
export declare const __testing: {
    bestPexelsFile: typeof bestPexelsFile;
    validatePexelsUrl: typeof validatePexelsUrl;
    hasMp4Signature: typeof hasMp4Signature;
    sanitizeExternalText: typeof sanitizeExternalText;
};
export {};