Convert PPTX to video in C++

Powerful cross-platform C++ API for converting PowerPoint to video using C++ code

Convert PowerPoint to video using Aspose.Slides

Aspose.Slides for C++ is a powerful C++ library used to create, edit and manipulate presentations and also convert PowerPoint presentations to other documents and videos. In this case, to convert PowerPoint to video, you need to use Aspose.Slides alongside ffmpeg.

This is how the PPTX to video conversion process works: Aspose.Slides is used to generate a set of frames (from the presentation slides) and then FFMpegCore (ffmpeg) is used to create a video based on the frames.

How to convert PPTX to video

Install Aspose.Slides for C++ by following the instructions here . Download ffmpeg here.
Add path to ffmpeg.exe to environment variable PATH.
Copy, paste, and then run the C++ PowerPoint to video code.

Convert PowerPoint to video in C++

Use this C++ code to convert PPTX to video:

C++ code for converting PowerPoint to video
void OnFrameTick(System::SharedPtr<PresentationPlayer> sender, System::SharedPtr<FrameTickEventArgs> args)
{
    System::String fileName = System::String::Format(u"frame_{0}.png", sender->get_FrameIndex());
    args->GetFrame()->Save(fileName);
}

void Run()
{
    auto presentation = System::MakeObject<Presentation>();
    auto slide = presentation->get_Slide(0);

    // Adds a smile shape and then animates it
    System::SharedPtr<IAutoShape> smile = slide->get_Shapes()->AddAutoShape(ShapeType::SmileyFace, 110.0f, 20.0f, 500.0f, 500.0f);
    auto sequence = slide->get_Timeline()->get_MainSequence();
    System::SharedPtr<IEffect> effectIn = sequence->AddEffect(smile, EffectType::Fly, EffectSubtype::TopLeft, EffectTriggerType::AfterPrevious);
    System::SharedPtr<IEffect> effectOut = sequence->AddEffect(smile, EffectType::Fly, EffectSubtype::BottomRight, EffectTriggerType::AfterPrevious);
    effectIn->get_Timing()->set_Duration(2.0f);
    effectOut->set_PresetClassType(EffectPresetClassType::Exit);

    const int32_t fps = 33;

    auto animationsGenerator = System::MakeObject<PresentationAnimationsGenerator>(presentation);
    auto player = System::MakeObject<PresentationPlayer>(animationsGenerator, fps);
    player->FrameTick += OnFrameTick;
    animationsGenerator->Run(presentation->get_Slides());

    const System::String ffmpegParameters = System::String::Format(
        u"-loglevel {0} -framerate {1} -i {2} -y -c:v {3} -pix_fmt {4} {5}",
        u"warning", m_fps, "frame_%d.png", u"libx264", u"yuv420p", "video.mp4");
    auto ffmpegProcess = System::Diagnostics::Process::Start(u"ffmpeg", ffmpegParameters);
    ffmpegProcess->WaitForExit();
}

Other Supported Conversions

You can also convert PowerPoint to files in other formats