CODEWITHSUNDEEP
uwpvisual-studio-2017mediaelement
user2431727
user2431727

Reputation: 907

How to get the total duration of a video using MediaElement of UWP

I'am playing a video using MediaElement. Now I want to get it's total duration before playing it. How is it possible? 

FileOpenPicker openPicker = new FileOpenPicker();
foreach (string extension in FileExtensions.Video)
{
    openPicker.FileTypeFilter.Add(extension);
}
StorageFile file = await openPicker.PickSingleFileAsync();
// mediaPlayer is a MediaElement defined in XAML
if (file != null)
{
    var stream = await file.OpenAsync(Windows.Storage.FileAccessMode.Read);
    videoMediaElement.SetSource(stream, file.ContentType);

    var totalDurationTime = videoMediaElement.NaturalDuration.TimeSpan.TotalSeconds;//get value zero
    var totalDurationTime1 = TimeSpan.FromSeconds(videoMediaElement.NaturalDuration.TimeSpan.TotalSeconds);//get zero
    videoMediaElement.Play();
}

Upvotes: 0

Views: 4737

Answers (2)

Manan
Manan

Reputation: 434

in xaml use 

<TextBox x:Name="startTime" Width="20" Height="20" VerticalAlignment="Bottom" HorizontalAlignment="Right" BorderThickness="1" InputScope="Number" />

and

<TextBox x:Name="endTime" Width="20" Height="20" VerticalAlignment="Bottom" HorizontalAlignment="Right" Margin="0,0,630,135" BorderThickness="1" InputScope="Number"/>

then in xaml.cs file

long x = Int64.Parse(startTime.Text);
long y = Int64.Parse(endTime.Text);


var clip = await MediaClip.CreateFromFileAsync(pickedFile);
clip.TrimTimeFromStart = new TimeSpan(x * 10000000);
clip.TrimTimeFromStart = new TimeSpan(y * 10000000);


composition = new MediaComposition();
composition.Clips.Add(clip);
mediaElement.Position = TimeSpan.Zero;
 mediaStreamSource = composition.GeneratePreviewMediaStreamSource((int)mediaElement.ActualWidth, (int)mediaElement.ActualHeight);
mediaElement.SetMediaStreamSource(mediaStreamSource);

you wil get total duration by using the following code : clip.OriginalDuration.TotalSeconds

Upvotes: 0

Sunteen Wu
Sunteen Wu

Reputation: 10627

As @Hannes said, if you want to get the media duration by NaturalDuration property of MediaElement class, you need to put the above code snippet inside MediaOpened event handle, for example:

<MediaElement x:Name="videoMediaElement" MediaOpened="videoMediaElement_MediaOpened"></MediaElement>

private void videoMediaElement_MediaOpened(object sender, RoutedEventArgs e)
{
    var totalDurationTime = videoMediaElement.NaturalDuration.TimeSpan.TotalSeconds; 
    var totalDurationTime1 = TimeSpan.FromSeconds(videoMediaElement.NaturalDuration.TimeSpan.TotalSeconds);
}

Actually, you can get the duration of the video file through the file VideoProperties. You can get the duration even before you opened the file.

StorageFile file = await openPicker.PickSingleFileAsync();
Windows.Storage.FileProperties.VideoProperties videoProperties = await file.Properties.GetVideoPropertiesAsync();
Duration videoDuration = videoProperties.Duration;

Upvotes: 4

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