Convert PowerPoint to Video

By converting your PowerPoint presentation to video, you get

Increase in accessibility: All devices (regardless of platform) are equipped with video players by default compared to presentation-opening applications, so users find it easier to open or play videos.
More reach: Through videos, you can reach a large audience and target them with information that might otherwise seem tedious in a presentation. Most surveys and statistics suggest that people watch and consume videos more than other forms of content, and they generally prefer such content.

You may want to check our PowerPoint to Video Online Converter because it is a live and effective implementation of the process described here.

PowerPoint to Video Conversion in Aspose.Slides

In Aspose.Slides 22.11, we implemented support for presentation to video conversion.

Use Aspose.Slides to generate a set of frames (from the presentation slides) that correspond to a certain FPS (frames per second)
Use a third-party utility like ffmpeg (for java) to create a video based on the frames.

Convert PowerPoint to Video

Add this to your POM file:

   <dependency>
     <groupId>net.bramp.ffmpeg</groupId>
     <artifactId>ffmpeg</artifactId>
     <version>0.7.0</version>
   </dependency>

Download ffmpeg here.
Run the PowerPoint to video Java code.

This Java code shows you how to convert a presentation (containing a figure and two animation effects) to a video:

Presentation presentation = new Presentation();
try {
    // Adds a smile shape and then animates it
    IAutoShape smile = presentation.getSlides().get_Item(0).getShapes().addAutoShape(ShapeType.SmileyFace, 110, 20, 500, 500);
    ISequence mainSequence = presentation.getSlides().get_Item(0).getTimeline().getMainSequence();
    IEffect effectIn = mainSequence.addEffect(smile, EffectType.Fly, EffectSubtype.TopLeft, EffectTriggerType.AfterPrevious);
    IEffect effectOut = mainSequence.addEffect(smile, EffectType.Fly, EffectSubtype.BottomRight, EffectTriggerType.AfterPrevious);
    effectIn.getTiming().setDuration(2f);
    effectOut.setPresetClassType(EffectPresetClassType.Exit);

    final int fps = 33;
    ArrayList<String> frames = new ArrayList<String>();

    PresentationAnimationsGenerator animationsGenerator = new PresentationAnimationsGenerator(presentation);
    try
    {
        PresentationPlayer player = new PresentationPlayer(animationsGenerator, fps);
        try {
            player.setFrameTick((sender, arguments) ->
            {
                try {
                    String frame = String.format("frame_%04d.png", sender.getFrameIndex());
                    arguments.getFrame().save(frame, ImageFormat.Png);
                    frames.add(frame);
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            });
            animationsGenerator.run(presentation.getSlides());
        } finally {
            if (player != null) player.dispose();
        }
    } finally {
        if (animationsGenerator != null) animationsGenerator.dispose();
    }

    // Configure ffmpeg binaries folder. See this page: https://github.com/rosenbjerg/FFMpegCore#installation
    FFmpeg ffmpeg = new FFmpeg("path/to/ffmpeg");
    FFprobe ffprobe = new FFprobe("path/to/ffprobe");

    FFmpegBuilder builder = new FFmpegBuilder()
            .addExtraArgs("-start_number", "1")
            .setInput("frame_%04d.png")
            .addOutput("output.avi")
            .setVideoFrameRate(FFmpeg.FPS_24)
            .setFormat("avi")
            .done();

    FFmpegExecutor executor = new FFmpegExecutor(ffmpeg, ffprobe);
    executor.createJob(builder).run();
} catch (IOException e) {
    e.printStackTrace();
}

Video Effects

You can apply animations to objects on slides and use transitions between slides.

You may want to see these articles: PowerPoint Animation, Shape Animation, and Shape Effect.

Animations and transitions make slideshows more engaging and interesting—and they do the same thing for videos. Let’s add another slide and transition to the code for the previous presentation:

// Adds a smile shape and animates it

// ...

// Adds a new slide and animated transition

ISlide newSlide = presentation.getSlides().addEmptySlide(presentation.getSlides().get_Item(0).getLayoutSlide());

newSlide.getBackground().setType(BackgroundType.OwnBackground);

newSlide.getBackground().getFillFormat().setFillType(FillType.Solid);

newSlide.getBackground().getFillFormat().getSolidFillColor().setColor(Color.MAGENTA);

newSlide.getSlideShowTransition().setType(TransitionType.Push);

Aspose.Slides also supports animation for texts. So we animate paragraphs on objects, which will appear one after the other (with the delay set to a second):

Presentation presentation = new Presentation();
try {
    // Adds text and animations
    IAutoShape autoShape = presentation.getSlides().get_Item(0).getShapes().addAutoShape(ShapeType.Rectangle, 210, 120, 300, 300);
    Paragraph para1 = new Paragraph();
    para1.getPortions().add(new Portion("Aspose Slides for Java"));
    Paragraph para2 = new Paragraph();
    para2.getPortions().add(new Portion("convert PowerPoint Presentation with text to video"));

    Paragraph para3 = new Paragraph();
    para3.getPortions().add(new Portion("paragraph by paragraph"));
    IParagraphCollection paragraphCollection = autoShape.getTextFrame().getParagraphs();
    paragraphCollection.add(para1);
    paragraphCollection.add(para2);
    paragraphCollection.add(para3);
    paragraphCollection.add(new Paragraph());

    ISequence mainSequence = presentation.getSlides().get_Item(0).getTimeline().getMainSequence();
    IEffect effect1 = mainSequence.addEffect(para1, EffectType.Appear, EffectSubtype.None, EffectTriggerType.AfterPrevious);
    IEffect effect2 = mainSequence.addEffect(para2, EffectType.Appear, EffectSubtype.None, EffectTriggerType.AfterPrevious);
    IEffect effect3 = mainSequence.addEffect(para3, EffectType.Appear, EffectSubtype.None, EffectTriggerType.AfterPrevious);
    IEffect effect4 = mainSequence.addEffect(para3, EffectType.Appear, EffectSubtype.None, EffectTriggerType.AfterPrevious);

    effect1.getTiming().setTriggerDelayTime(1f);
    effect2.getTiming().setTriggerDelayTime(1f);
    effect3.getTiming().setTriggerDelayTime(1f);
    effect4.getTiming().setTriggerDelayTime(1f);

    final int fps = 33;
    ArrayList<String> frames = new ArrayList<String>();

    PresentationAnimationsGenerator animationsGenerator = new PresentationAnimationsGenerator(presentation);
    try
    {
        PresentationPlayer player = new PresentationPlayer(animationsGenerator, fps);
        try {
            player.setFrameTick((sender, arguments) ->
            {
                try {
                    String frame = String.format("frame_%04d.png", sender.getFrameIndex());
                    arguments.getFrame().save(frame, ImageFormat.Png);
                    frames.add(frame);
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            });
            animationsGenerator.run(presentation.getSlides());
        } finally {
            if (player != null) player.dispose();
        }
    } finally {
        if (animationsGenerator != null) animationsGenerator.dispose();
    }

    // Configure ffmpeg binaries folder. See this page: https://github.com/rosenbjerg/FFMpegCore#installation
    FFmpeg ffmpeg = new FFmpeg("path/to/ffmpeg");
    FFprobe ffprobe = new FFprobe("path/to/ffprobe");

    FFmpegBuilder builder = new FFmpegBuilder()
            .addExtraArgs("-start_number", "1")
            .setInput("frame_%04d.png")
            .addOutput("output.avi")
            .setVideoFrameRate(FFmpeg.FPS_24)
            .setFormat("avi")
            .done();

    FFmpegExecutor executor = new FFmpegExecutor(ffmpeg, ffprobe);
    executor.createJob(builder).run();
} catch (IOException e) {
    e.printStackTrace();
}

Video Conversion Classes

To allow you to perform PowerPoint to video conversion tasks, Aspose.Slides provides the PresentationAnimationsGenerator and PresentationPlayer classes.

PresentationAnimationsGenerator allows you to set the frame size for the video (that will be created later) through its constructor. If you pass an instance of the presentation, Presentation.SlideSize will be used and it generates animations that PresentationPlayer uses.

When animations are generated, a NewAnimation event is generated for each subsequent animation, which has the IPresentationAnimationPlayer parameter. The latter is a class that represents a player for a separate animation.

To work with IPresentationAnimationPlayer, the Duration (the full duration of the animation) property and SetTimePosition method are used. Each animation position is set within the 0 to duration range, and then the GetFrame method will return a BufferedImage that corresponds to the animation state at that moment:

Presentation presentation = new Presentation();
try {
    // Adds a smile shape and animates it
    IAutoShape smile = presentation.getSlides().get_Item(0).getShapes().addAutoShape(ShapeType.SmileyFace, 110, 20, 500, 500);
    ISequence mainSequence = presentation.getSlides().get_Item(0).getTimeline().getMainSequence();
    IEffect effectIn = mainSequence.addEffect(smile, EffectType.Fly, EffectSubtype.TopLeft, EffectTriggerType.AfterPrevious);
    IEffect effectOut = mainSequence.addEffect(smile, EffectType.Fly, EffectSubtype.BottomRight, EffectTriggerType.AfterPrevious);
    effectIn.getTiming().setDuration(2f);
    effectOut.setPresetClassType(EffectPresetClassType.Exit);

    PresentationAnimationsGenerator animationsGenerator = new PresentationAnimationsGenerator(presentation);
    try {
        animationsGenerator.setNewAnimation(animationPlayer ->
        {
            System.out.println(String.format("Animation total duration: %f", animationPlayer.getDuration()));
            animationPlayer.setTimePosition(0); // initial animation state
            try {
                // initial animation state bitmap
                animationPlayer.getFrame().save("firstFrame.png", ImageFormat.Png);
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
            animationPlayer.setTimePosition(animationPlayer.getDuration()); // final state of the animation
            try {
                // last frame of the animation
                animationPlayer.getFrame().save("lastFrame.png", ImageFormat.Png);
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        });
    } finally {
        if (animationsGenerator != null) animationsGenerator.dispose();
    }
} finally {
    if (presentation != null) presentation.dispose();
}

To make all animations in a presentation play at once, the PresentationPlayer class is used. This class takes a PresentationAnimationsGenerator instance and FPS for effects in its constructor and then calls the FrameTick event for all the animations to get them played:

Presentation presentation = new Presentation("animated.pptx");
try {
    PresentationAnimationsGenerator animationsGenerator = new PresentationAnimationsGenerator(presentation);
    try {
        PresentationPlayer player = new PresentationPlayer(animationsGenerator, 33);
        try {
            player.setFrameTick((sender, arguments) ->
            {
                try {
                    arguments.getFrame().save("frame_" + sender.getFrameIndex() + ".png", ImageFormat.Png);
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            });
            animationsGenerator.run(presentation.getSlides());
        } finally {
            if (player != null) player.dispose();
        }
    } finally {
        if (animationsGenerator != null) animationsGenerator.dispose();
    }
} finally {
    if (presentation != null) presentation.dispose();
}

Then the generated frames can be compiled to produce a video. See the Convert PowerPoint to Video section.

Supported Animations and Effects

Entrance:

Animation Type	Aspose.Slides	PowerPoint
Appear
Fade
Fly In
Float In
Split
Wipe
Shape
Wheel
Random Bars
Grow & Turn
Zoom
Swivel
Bounce

Emphasis:

Animation Type	Aspose.Slides	PowerPoint
Pulse
Color Pulse
Teeter
Spin
Grow/Shrink
Desaturate
Darken
Lighten
Transparency
Object Color
Complementary Color
Line Color
Fill Color

Exit:

Animation Type	Aspose.Slides	PowerPoint
Disappear
Fade
Fly Out
Float Out
Split
Wipe
Shape
Random Bars
Shrink & Turn
Zoom
Swivel
Bounce

Motion Paths:

Animation Type	Aspose.Slides	PowerPoint
Lines
Arcs
Turns
Shapes
Loops
Custom Path

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