CODEWITHSUNDEEP
c#windows-phone-8
Nitesh Kothari
Nitesh Kothari

Reputation: 888

Video File to Base64String issue in Windows Phone 8

I have created a video recording feature in Windows Phone 8, and am converting byte array to a base-64 string. How do I get the duration of the recording? My byte array memory size becomes too large and therefore the base64String is also too big, so I am getting error like this:

"System.OutOfMemoryException"

for more information see my code below:

private IsolatedStorageFileStream isoVideoFile;
string isoVideoFileName = "CameraMovie.mp4";

isoVideoFile = new IsolatedStorageFileStream(isoVideoFileName,
                   FileMode.OpenOrCreate, FileAccess.ReadWrite,
                   IsolatedStorageFile.GetUserStoreForApplication());
MemoryStream stream = new MemoryStream();
isoVideoFile.Write(stream.GetBuffer(), 0, (int)stream.Position);

byte[] binaryData = new Byte[isoVideoFile.Length];
long bytesRead = isoVideoFile.Read(binaryData, 0, (int)isoVideoFile.Length);
string videofile = Convert.ToBase64String(binaryData, 0, binaryData.Length);

For video length:

    private void Element_MediaOpened1(object sender, RoutedEventArgs e)
    {
        if (mediaElement_1.NaturalDuration.HasTimeSpan)
        timelineSlider.Maximum = mediaElement_1.NaturalDuration.TimeSpan.TotalSeconds;
    }

Upvotes: 2

Views: 180

Answers (1)

ad1Dima
ad1Dima

Reputation: 3197

You get over per app memory limit.

Try to dispose resources. It's good practice to use using with streams. Something like this: private IsolatedStorageFileStream isoVideoFile; string isoVideoFileName = "CameraMovie.mp4";

using(isoVideoFile = new IsolatedStorageFileStream(isoVideoFileName,
                   FileMode.OpenOrCreate, FileAccess.ReadWrite,
                   IsolatedStorageFile.GetUserStoreForApplication()))
{
    using(MemoryStream stream = new MemoryStream())
    {
        isoVideoFile.Write(stream.GetBuffer(), 0, (int)stream.Position);
    }
    byte[] binaryData = new Byte[isoVideoFile.Length];
    long bytesRead = isoVideoFile.Read(binaryData, 0, (int)isoVideoFile.Length);
    string videofile = Convert.ToBase64String(binaryData, 0, binaryData.Length);
}

And what about video duration, here is thread on msdn forums

Upvotes: 1

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