get_CaptionTracks()

IVideoFrame::get_CaptionTracks() method

Returns the closed captions collection of the video. Read-only ICaptionsCollection.

virtual System::SharedPtr<ICaptionsCollection> Aspose::Slides::IVideoFrame::get_CaptionTracks()=0

Remarks

Example:

System::SharedPtr<Presentation> pres = System::MakeObject<Presentation>(u"video with captions.pptx");

for (auto&& shape : pres->get_Slide(0)->get_Shapes())
{
    System::SharedPtr<IVideoFrame> videoFrame = System::AsCast<IVideoFrame>(shape);
    if (videoFrame != nullptr)
    {
        continue;
    }

    for (auto&& captionTrack : videoFrame->get_CaptionTracks())
    {
        // Extracts the captions binary data and saves them to the file
        System::IO::File::WriteAllBytes(System::Convert::ToString(captionTrack->get_CaptionId()) + u".vtt", captionTrack->get_BinaryData());
    }
}

See Also

set_TrimFromEnd()