export default class SdpUtil {
    private static vp8;
    private static vp9;
    private static h264;
    private static av1x;
    private static h265;
    private static hevc;
    private static svac;
    private static tail;
    private static config;
    static isLoopIpAddress(ip: string): boolean;
    static getRtpmapRegByMode(mode: 'VP8' | 'VP9' | 'H264' | 'AV1X' | 'H265' | 'HEVC' | 'SVAC'): RegExp;
    static hasVp8(sdp: string): boolean;
    static hasVp9(sdp: string): boolean;
    static hasH264(sdp: string): boolean;
    static hasAV1X(sdp: string): boolean;
    static hasH265(sdp: string): boolean;
    static hasHEVC(sdp: string): boolean;
    static hasSVAC(sdp: string): boolean;
    static hasMode(sdp: string, mode: 'VP8' | 'VP9' | 'H264' | 'AV1X' | 'H265' | 'HEVC' | 'SVAC'): boolean;
    static setAudioBitrate(sdp: string, bitrate: number): string;
    static setBitRate(sdp: string, startBitrate: number, maxBitrate: number, minBitrate: number): string;
    static setModeBitRate(sdp: string, startBitrate: number, maxBitrate: number, minBitrate: number, mode: 'VP8' | 'VP9' | 'H264' | 'AV1X'): string;
    static removeVp8(sdp: string): string;
    static removeVp9(sdp: string): string;
    static removeH264(sdp: string): string;
    static removeAV1X(sdp: string): string;
    static removeH265(sdp: string): string;
    static removeHEVC(sdp: string): string;
    static removeSVAC(sdp: string): string;
    static sdpFilter(sdp: string, mode: 'VP8' | 'VP9' | 'H264' | 'AV1X' | 'H265' | 'HEVC' | 'SVAC'): string;
    static sdpGooAttrLine(...attrs: string[]): string;
    static sdpBlankAttrLine(...attrs: string[]): string;
    static getBlankAttrs(sdpLine: string): string[];
    static getAttrName(sdpLine: string): string;
}