Video Stream Over UDP

[bajoelkid12]

i'm workin on client - server video capturing and displaying application.. .my client capture the video via webcam then send it to the server over WLAN via UDP, then the server display the captured video stream continously (real - time).. i have made a simple client - server application using QUdpsocket. but the problem now is to put the video stream into the socket.. any suggestion ?

here is the udp client - server code that i developed :

#include "jcxudp.h"
 
jcxUDP::jcxUDP(QObject *parent) :
    QObject(parent)
{
    socket = new QUdpSocket(this);
    socket->bind(QHostAddress::LocalHost,5678);
    connect(socket,SIGNAL(readyRead()),this,SLOT(SiapBaca()));
}
 
void jcxUDP::NulisHallo()
{
    QByteArray Data;
    Data.append("halo dari jincheng");
    socket->writeDatagram(Data,QHostAddress::LocalHost,5678);
}
 
void jcxUDP::SiapBaca()
{
    QByteArray Buffer;
    Buffer.resize(socket->pendingDatagramSize());
 
    QHostAddress sender;
    quint16 senderPort;
    socket->readDatagram(Buffer.data(),Buffer.size(),&sender,&senderPort);
 
    qDebug() << "Pesan Dari :" << sender.toString();
    qDebug() << "Port Pesan :" << senderPort;
    qDebug() << "Pesan :" << Buffer;
}

#include "jcxudp.h"

jcxUDP::jcxUDP(QObject *parent) :
    QObject(parent)
{
    socket = new QUdpSocket(this);
    socket->bind(QHostAddress::LocalHost,5678);
    connect(socket,SIGNAL(readyRead()),this,SLOT(SiapBaca()));
}

void jcxUDP::NulisHallo()
{
    QByteArray Data;
    Data.append("halo dari jincheng");
    socket->writeDatagram(Data,QHostAddress::LocalHost,5678);
}

void jcxUDP::SiapBaca()
{
    QByteArray Buffer;
    Buffer.resize(socket->pendingDatagramSize());

    QHostAddress sender;
    quint16 senderPort;
    socket->readDatagram(Buffer.data(),Buffer.size(),&sender,&senderPort);

    qDebug() << "Pesan Dari :" << sender.toString();
    qDebug() << "Port Pesan :" << senderPort;
    qDebug() << "Pesan :" << Buffer;
}

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[squidge]

Break it down. How are you encoding the video stream for transfer? Are you using MPEG compression? MJPEG? Raw images? Take each frame and send it to the server and then re-assemble at the server side. Note that the server will need to know the expected sizes when receiving.

[bajoelkid12]

this is my problem too.. how can we implement the MPEG compression in Qt ? what class should i use ?

[squidge]

There isn't one as far as I know, you'll need to find an appropriate C++ class to do it for you.

[SIFE]

There a outdated tutorial about using ffmpeg but it is still useful