Question

I am using MediaTimeline and MediaClock to control the WMV video playback.

Timeline = new MediaTimeline(new Uri(VideoFileName));
Clock = Timeline.CreateClock(true) as MediaClock;

When I look at the Clock.NaturalDuration, value is set to Automatic and does not
contain duration TimeSpan yet.

When I assign Clock to MediaElement and video starts playing, I can now see the NaturalDuration.TimeSpan is present and OK.

Is there a way to get the video duration other than assigning clock to media element and playing?

Is there a way to get duration even without usage of media element (this would be the best)?

Answer 1

I had similar need to check out video length, so I read that this property is available when MediaOpened event is being raised, otherwise is set to Automatic – read this
http://msdn.microsoft.com/en-us/library/system.windows.controls.mediaelement.naturalduration(v=vs.95).aspx

media.MediaOpened += new System.Windows.RoutedEventHandler(media_MediaOpened);
            media.LoadedBehavior = MediaState.Manual;
            media.UnloadedBehavior = MediaState.Manual;
            media.Play();

void media_MediaOpened( object sender, System.Windows.RoutedEventArgs e )
        {
            progress.Maximum = (int)media.NaturalDuration.TimeSpan.TotalSeconds;
            timer.Start();
            isPlaying = true;
        }