export declare const HEADER_SIZE = 11;
export interface FrameChunkHeader {
    timestamp: number;
    start: boolean;
    end: boolean;
    keyframe: boolean;
    sequence: number;
    isVP9: boolean;
    eos: boolean;
    ssrc: number;
}
export interface FrameChunk extends FrameChunkHeader {
    data: ArrayBuffer;
}
export declare function wrapHeader(timestamp: number, start: boolean, end: boolean, keyframe: boolean, sequence: number, isVP9: boolean, data: ArrayBuffer | null): ArrayBuffer;
export declare function parseChunk(data: ArrayBuffer): FrameChunk;
export declare function isKeyframeRequested(data?: ArrayBuffer): boolean;
export interface CcFeedback {
    seq: number;
    ts2: number;
}
export declare function parseCcFeedback(data?: ArrayBuffer): CcFeedback | null;
export declare function prepareKeyFrameRequest(ssrc: number): ArrayBuffer;