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PolySub is a cloud-based video subtitle and captioning app designed to generate professional WebVTT subtitle files or burn captions directly into videos. It uses automatic speech recognition and context-aware AI to transcribe, translate, and verify subtitles, helping improve accuracy for spoken content across different subjects and languages.
The app supports video processing in 24+ languages and is built for use cases such as content creation, online learning, marketing, and internal communication. Users can upload a video, select the source and target languages, and receive downloadable subtitle files or a video with burned-in captions. PolySub also uses cloud processing, which allows subtitle generation to run remotely without relying on local device performance.
Additional features include secure file storage, support for higher-definition burned-in captions, and output options tailored for accessibility, localization, and multilingual video distribution. It is intended for users who need a straightforward subtitle generator and video captioning tool for professional or educational content.
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