Audio and Video

Presentations may contain audio or video that can be played when a slideshow is running.

In the GemBox.Presentation API, the media-related types are grouped in the GemBox.Presentation.Media namespace.

The following example shows how you can create and customize audio and video content using the GemBox.Presentation API.

Note: The playing of media created with the GemBox.Presentation API currently works only on MS PowerPoint 2013. In subsequent updates, we will add media-playing support for older versions of MS PowerPoint.

Screenshot of PowerPoint audio and video created with GemBox.Presentation

C#
VB.NET

using System.IO;
using GemBox.Presentation;
using GemBox.Presentation.Media;

class Program
{
    static void Main()
    {
        // If using Professional version, put your serial key below.
        ComponentInfo.SetLicense("FREE-LIMITED-KEY");

        var presentation = new PresentationDocument();

        // Create new presentation slide.
        var slide = presentation.Slides.AddNew(SlideLayoutType.Custom);

        // Create and add audio content.
        AudioContent audio = null;
        using (var stream = File.OpenRead("%#Applause.wav%"))
            audio = slide.Content.AddAudio(AudioContentType.Wav, stream, 2, 2, LengthUnit.Centimeter);

        // Set the ending fade durations for the media.
        audio.Fade.End = TimeOffset.From(300, TimeOffsetUnit.Millisecond);

        // Get the picture associated with this media.
        var picture = audio.Picture;

        // Set drawing properties.
        picture.Action.Click.Set(ActionType.PlayMedia);
        picture.Layout.Width = Length.From(7, LengthUnit.Centimeter);
        picture.Layout.Height = Length.From(7, LengthUnit.Centimeter);
        picture.Name = "Applause.wav";

        // Create and add video content.
        VideoContent video = null;
        using (var stream = File.OpenRead("%#Wildlife.wmv%"))
            video = slide.Content.AddVideo("video/x-ms-wmv", stream, 10, 2, 10, 5.6, LengthUnit.Centimeter);

        // Set drawing properties.
        video.Picture.Action.Click.Set(ActionType.PlayMedia);
        video.Picture.Name = "Wildlife.wmv";

        // Set the amount of time to be trimmed from the start and end of the media.
        video.Trim.Start = TimeOffset.From(600, TimeOffsetUnit.Millisecond);
        video.Trim.End = TimeOffset.From(800, TimeOffsetUnit.Millisecond);

        // Set the starting and ending fade durations for the media.
        video.Fade.Start = TimeOffset.From(100, TimeOffsetUnit.Millisecond);
        video.Fade.End = TimeOffset.From(200, TimeOffsetUnit.Millisecond);

        // Add video bookmarks.
        video.Bookmarks.Add(TimeOffset.From(1500, TimeOffsetUnit.Millisecond));
        video.Bookmarks.Add(TimeOffset.From(3000, TimeOffsetUnit.Millisecond));

        presentation.Save("Audio and Video.pptx");
    }
}

Imports System.IO
Imports GemBox.Presentation
Imports GemBox.Presentation.Media

Module Program

    Sub Main()

        ' If using Professional version, put your serial key below.
        ComponentInfo.SetLicense("FREE-LIMITED-KEY")

        Dim presentation = New PresentationDocument

        ' Create New presentation slide.
        Dim slide = presentation.Slides.AddNew(SlideLayoutType.Custom)

        ' Create and add audio content.
        Dim audio As AudioContent = Nothing
        Using stream As Stream = File.OpenRead("%#Applause.wav%")
            audio = slide.Content.AddAudio(AudioContentType.Wav, stream, 2, 2, LengthUnit.Centimeter)
        End Using

        ' Set the ending fade durations for the media.
        audio.Fade.End = TimeOffset.From(300, TimeOffsetUnit.Millisecond)

        ' Get the picture associated with this media.
        Dim picture = audio.Picture

        ' Set drawing properties.
        picture.Action.Click.Set(ActionType.PlayMedia)
        picture.Layout.Width = Length.From(7, LengthUnit.Centimeter)
        picture.Layout.Height = Length.From(7, LengthUnit.Centimeter)
        picture.Name = "Applause.wav"

        ' Create and add video content.
        Dim video As VideoContent = Nothing
        Using stream As Stream = File.OpenRead("%#Wildlife.wmv%")
            video = slide.Content.AddVideo("video/x-ms-wmv", stream, 10, 2, 10, 5.6, LengthUnit.Centimeter)
        End Using

        ' Set drawing properties.
        video.Picture.Action.Click.Set(ActionType.PlayMedia)
        video.Picture.Name = "Wildlife.wmv"

        ' Set the amount of time to be trimmed from the start And end of the media.
        video.Trim.Start = TimeOffset.From(600, TimeOffsetUnit.Millisecond)
        video.Trim.End = TimeOffset.From(800, TimeOffsetUnit.Millisecond)

        ' Set the starting And ending fade durations for the media.
        video.Fade.Start = TimeOffset.From(100, TimeOffsetUnit.Millisecond)
        video.Fade.End = TimeOffset.From(200, TimeOffsetUnit.Millisecond)

        ' Add video bookmarks.
        video.Bookmarks.Add(TimeOffset.From(1500, TimeOffsetUnit.Millisecond))
        video.Bookmarks.Add(TimeOffset.From(3000, TimeOffsetUnit.Millisecond))

        presentation.Save("Audio and Video.pptx")
    End Sub
End Module

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If you want to try the GemBox.Presentation yourself, you can download the free version. It delivers the same performance and set of features as the professional version, but with some operations limited. To remove the limitation, you need to purchase a license.