/**
 * FFmpeg Video Processing Plugin
 * Transcode videos, generate thumbnails, create HLS streams, and extract metadata
 *
 * @module @plyaz/storage/plugins/video-processing
 *
 * @example
 * ```typescript
 * import { FFmpegVideoPlugin } from '@plyaz/storage/plugins';
 *
 * const videoPlugin = new FFmpegVideoPlugin({
 *   ffmpegPath: '/usr/bin/ffmpeg',
 *   ffprobePath: '/usr/bin/ffprobe',
 *   resolutions: [
 *     { name: '480p', width: 854, height: 480, bitrate: '1000k' },
 *     { name: '720p', width: 1280, height: 720, bitrate: '2500k' },
 *     { name: '1080p', width: 1920, height: 1080, bitrate: '5000k' },
 *   ],
 *   thumbnails: {
 *     count: 5,
 *     timestamps: [0.1, 0.25, 0.5, 0.75, 0.9],
 *   },
 *   useQueue: true,
 * });
 * ```
 */
import { BasePlugin } from '../../base/BasePlugin';
import type { StoragePluginUploadResult, StoragePluginContext, StoragePluginHealth, FFmpegVideoPluginConfig, StorageVideoProcessingPluginStatistics } from '@plyaz/types/storage';
/**
 * FFmpeg Video Processing Plugin
 * Production-ready video processing using FFmpeg
 *
 * Features:
 * - Video transcoding to multiple resolutions
 * - Thumbnail generation at intervals
 * - HLS adaptive streaming
 * - Metadata extraction (duration, resolution, codec)
 * - Background queue processing
 */
export declare class FFmpegVideoPlugin extends BasePlugin {
    private readonly ffmpegPath;
    private readonly ffprobePath;
    private readonly resolutions;
    private readonly thumbnails?;
    private readonly hls?;
    private readonly useQueue;
    private readonly supportedMimeTypes;
    private readonly uploadVariants;
    private readonly tempDir;
    private videosProcessed;
    private variantsGenerated;
    constructor(config?: FFmpegVideoPluginConfig);
    /**
     * Initialize the plugin - set FFmpeg paths
     */
    initialize(): Promise<void>;
    /**
     * Process video after upload
     */
    afterUpload(result: StoragePluginUploadResult, context: StoragePluginContext): Promise<void>;
    /**
     * Process video - transcode and generate thumbnails
     */
    private processVideo;
    /**
     * Extract video metadata using ffprobe
     */
    private extractMetadata;
    /**
     * Generate video thumbnails
     */
    private generateThumbnails;
    /**
     * Calculate evenly distributed timestamps for thumbnails
     */
    private calculateTimestamps;
    /**
     * Generate HLS (HTTP Live Streaming) segments and playlists
     */
    private generateHLS;
    /**
     * Transcode video to different resolution
     */
    private transcodeVideo;
    /**
     * Check if file is a video
     */
    private isVideoFile;
    /**
     * Health check
     */
    healthCheck(): Promise<StoragePluginHealth>;
    /**
     * Get processing statistics
     */
    getStatistics(): StorageVideoProcessingPluginStatistics;
    /**
     * Helper: Clean up input temp file
     */
    private cleanupInputPath;
    /**
     * Helper: Clean up output temp files
     */
    private cleanupOutputPaths;
}