import IEncoder from './IEncoder';
import { OnFrameCallback } from './Types';
import WorkerBase from './WorkerBase';
export default class WebCodecsEncoder extends WorkerBase implements IEncoder {
    private readonly _sourceTrack;
    private readonly _trackProcessor;
    private readonly _onFrame;
    private readonly _useCongestionControl;
    private readonly _maxBitrate;
    private readonly _useCbr;
    private readonly _frameRate;
    constructor(sourceTrack: MediaStreamTrack, onFrame: OnFrameCallback, useCongestionControl: boolean, maxBitrate: number, useCbr: boolean, frameRate: number);
    init(): Promise<void>;
    requestFrame(keyFrame?: boolean): void;
    setBitrate(bitrate: number, useCbr: boolean, fps: number): void;
    isVP9(): boolean;
    destroy(): void;
    static isBrowserSupported(): boolean;
}