export interface H264AccessUnit {
    readonly timestamp: number;
    readonly data: Uint8Array;
    readonly keyFrame: boolean;
}
/** Packetizes an Annex-B access unit into RFC 6184 single-NAL/FU-A payloads. */
export declare function packetizeH264AnnexB(data: Uint8Array, maxPayload?: number): Uint8Array[];
/** WhatsApp's native sender packs the complete Annex-B access unit as one NAL
 * before applying FU-A fragmentation. This intentionally differs from generic
 * RFC 6184 packetization and keeps SPS/PPS/IDR together for mobile receivers. */
export declare function packetizeWhatsAppH264AccessUnit(data: Uint8Array, maxPayload?: number): Uint8Array[];
/** RFC 6184 depacketizer for single NAL, STAP-A and FU-A payloads. */
export declare class H264Depacketizer {
    private static readonly MAX_BUFFERED_BYTES;
    private timestamp;
    private parts;
    private keyFrame;
    private fuParts;
    private bufferedBytes;
    push(payload: Uint8Array, timestamp: number, marker: boolean): H264AccessUnit[];
    reset(): void;
    private resetFrame;
    private appendNal;
    private appendStapA;
    private appendFuA;
    private flush;
}