Processing files before upload

[Thomas]

Hi,

I'm using Telerik Upload for uploading multiple Videos. All is setup and working with Upload handler. Now, I need to add a feature where I must create a thumbnail of the video file before its uploaded. see below my current code for generating the thumbnail

private byte[] CreateThumbNail(string fileExtention, FileInfo vidFile)
{
    //FileInfoFileInfo mFile = new FileInfo(filepath);
    try
    {
        WriteableBitmap thumbnail = null;
        switch (fileExtention)
        {
            case ".wmv":
            case ".mp4":
            case ".mov":
                SimplePlayerSettings mSettings = new SimplePlayerSettings();
                SimplePlayer mediaPlayer = new SimplePlayer();
                //mSettings.DeliveryMethod = Microsoft.SilverlightMediaFramework.Plugins.Primitives.DeliveryMethods.Streaming;
                mSettings.StreamSource = vidFile.OpenRead();
                mediaPlayer.InitPlayer(mSettings);
                mediaPlayer.Playlist.Clear();
                mediaPlayer.Stop();
                mediaPlayer.SeekToPosition(5);
                thumbnail = new WriteableBitmap(mediaPlayer, null);
                break;
            default:
                return null;
        }

        BitmapImage bmpImg = new BitmapImage();
        using (MemoryStream stream = new MemoryStream())
        {
            PngBitmapEncoder encoder = new PngBitmapEncoder();
            encoder.Frames.Add(BitmapFrame.Create(thumbnail));
            encoder.Save(stream);
            return stream.ToArray();
        }
    }
    catch (Exception ex)
    {
        return null;
    }

}

Now, what my problem is, the video file cannot be loaded and throws an error about access denied. Any help would be appriciated.

Thanks

[Tina Stancheva]

Hello Eric,

Unfortunately I wasn't able to reproduce this issue from the code you provided. And I'm not sure how and where you call the CreateThumbNail() method. Can you please elaborate a bit more on your implementation?

Thank you in advance.

All the best,
Tina Stancheva
the Telerik team