Correct this code if im doing it wrong to calculate remainingTime of download a file

I tried to get remainingTime of downloading a file, as you can see from the source code below, i set some variables on updateFileStatus SLOT which i connected to updateProgress signal from QNetworkReply.
The problem is, the result fo the remainingTime is nor correct, it's return wrong time like 20:32:17 ... [QTime string format] // when i return the integer values of hour, minute, remSecond it's something like empty/null/uninitialized variable'

Code:

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QString Status::remainingTime() const
{
 
    if(_downloadRate){
        qDebug() << _downloadRate << "###" << _totalLength << "###" << _completedLength;
        int speed = _downloadRate;
        int remLength = _totalLength - _completedLength;
        int remSecond = remLength/speed;
        int hour = remSecond/3600;
        remSecond = remSecond%3600;
        int minute = remSecond/60;
        remSecond = remSecond%60;
        return QTime(hour, minute, remSecond).toString();
    }
 
    return QString("n/a");
 
}
 
QString Status::downloadRate() const
{
    if(_downloadRate){
        int rate = _downloadRate/1024;
        if(rate < 1)
            return QString(tr("%1Kb/s").arg(rate));
        else if(rate >= 1)
            return QString(tr("%1Mb/s").arg(rate));
    }
    return QString(tr("n/a"));
}
 
void Status::updateFileStatus(qint64 bytesReceived, qint64 bytesTotal)
{
    qDebug() <<  _startTime->elapsed();
    if(!_totalLength)
        _totalLength = bytesTotal;
    _completedLength = bytesReceived;
    _progress = _completedLength*100/_totalLength;
    _downloadRate = _completedLength / _startTime->elapsed();
}

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What does bytesTotal contain?

From the Qt doc :D

Quote:

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bytesTotal indicates the total number of bytes expected to be downloaded

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I told so, i connected to QNetworkReply::downloadProgress ( qint64 bytesReceived, qint64 bytesTotal ) [signal]

No, you don't understand. I'm asking about the exact value you get in this variable. Is it by any chance -1?

No, it's not.
It's exact file size!
To insure myself about that, also i put

Code:

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qDebug() << _downloadRate << "###" << _totalLength << "###" << _completedLength;

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to keep eye on it :|
Is it becuase of the type [qint64] which i get them from the downoadProgress ?

And how do you calculate the download rate?

Quote:

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Originally Posted by wysota

And how do you calculate the download rate?

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Stop asking weird question, i provide the source, what is it?
Next i'm sure you gonna asking about my lip stick color :|
//
Anyway, i fixed it, i just mimic the minitube way to calculate downloadRate, remainingTime.

Quote:

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Originally Posted by Alir3z4

Stop asking weird question, i provide the source, what is it?

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Quote:

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Anyway, i fixed it, i just mimic the minitube way to calculate downloadRate, remainingTime.

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So the question about how you calculate the rate wasn't so weird after all, was it?