export declare const enum WebCodec {
    VP9 = "vp09.00.50.08",
    VP8 = "vp8"
}
export declare const enum MessageType {
    INIT = "init",
    READY = "ready",
    FRAME = "frame",
    SET_BITRATE = "set_bitrate",
    ERROR = "error",
    DEBUG = "debug",
    LOG_ERROR = "log_error"
}
export type EncodedVideoFrame = Pick<EncodedVideoChunk, 'type' | 'duration' | 'byteLength' | 'data'> & {
    width: number;
    height: number;
    timestamp: number;
};
export interface EncodedVideoFrameChunk {
    sequence: number;
    timestamp: number;
    data: ArrayBuffer;
    frameSize: number;
    isFirst: boolean;
    isLast: boolean;
    isKey: boolean;
}
export type OnFrameCallback = (chunk: EncodedVideoFrame | null, error?: string) => void;
export type OnCongestionCallback = (bitrate: number, useCbr: boolean, fps: number) => void;