import type { AVIFormatContext } from "../AVFormatContext.ts";
import IFormat from "./IFormat.ts";
import { AVFormat, type AVPacket, type AVStream } from "@libmedia/avutil";
export default class IWebVttFormat extends IFormat {
    type: AVFormat;
    private queue;
    private index;
    private baseTs;
    constructor();
    init(formatContext: AVIFormatContext): void;
    private readChunk;
    private readCue;
    readHeader(formatContext: AVIFormatContext): Promise<number>;
    readAVPacket(formatContext: AVIFormatContext, avpacket: pointer<AVPacket>): Promise<number>;
    seek(formatContext: AVIFormatContext, stream: AVStream, timestamp: int64, flags: int32): Promise<int64>;
    getAnalyzeStreamsCount(): number;
}