int PacketDataSaveThread::savePacketData(int id, AVPacket *pkt)

{

    int ret = ;

    QString filename;

    filename.append(QString::number(pkt->stream_index)).append("_").append(QString::number(id)).append(".pkt");

    QFile file(filename);

    file.open(QIODevice::WriteOnly);

    file.write(QByteArray((const char *)pkt->data, pkt->size));

    file.close();

    return ret;

}