/// <reference types="node" />
import { FfmpegConfig, ServerError } from './types';
import { Logger } from 'tslog';
import TypedEmitter from "typed-emitter";
export declare const FfmpegErrors: {
    [name: string]: ServerError;
};
export declare type FfmpegEvents = {
    error: (error: ServerError) => void;
    destroyed: () => void;
    ffmpegOutput: (message: string) => void;
};
export declare type FfmpegStatus = {
    status: string;
    framesSent: number;
    lastFrameSentTime?: number;
    pid?: number;
    options: FfmpegConfig;
};
declare const Ffmpeg_base: new () => TypedEmitter<FfmpegEvents>;
export default class Ffmpeg extends Ffmpeg_base {
    private options;
    private logger;
    private process?;
    private status;
    private framesSent;
    private lastFrameSentTime?;
    private lastOutput;
    constructor(logger: Logger, options: FfmpegConfig);
    start(): void;
    destroy(): void;
    getStatus(): FfmpegStatus;
    private emitError;
    private onProcessOutput;
    private onProcessStdinError;
    private onProcessError;
    sendData(data: Buffer): Promise<void>;
    private getAudioEncoding;
    private createOptions;
}
export {};