import { LoggerService } from '../logger/logger-service';
import { MediaTrackContentHint } from './media-track-content-hint';
import { RTCConfig } from '../config/rtc-config';
type MediaStreamTrackWithContentHint = MediaStreamTrack & MediaTrackContentHint;
export declare class MediaTrackOptimizer {
    private rtcConfig;
    private logger;
    constructor(rtcConfig: RTCConfig, logger: LoggerService);
    /**
     * Try to add contentHint according to:
     * https://w3c.github.io/mst-content-hint/#introduction
     * Available in chrome 70v+
     */
    addContentHint(track: MediaStreamTrackWithContentHint): void;
    private addConentHintToAudioTrack;
    private addConentHintToVideoTrack;
}
export {};