NexSub

Can NexSub capture subtitles from streaming services like Netflix or YouTube without downloading the video?

Yes. NexSub captures audio directly from your system output, so it works with Netflix, YouTube, Zoom, and any other streaming service or application playing through your speakers or headphones. You do not need to download or upload the video file itself; it processes the audio in real time as you watch.

What happens to my video and audio data when NexSub generates subtitles?

Everything stays on your machine. NexSub processes audio locally without sending it to the cloud, storing it on servers, or using any internet connection. Your video files and the audio NexSub captures never leave your computer, which makes it suitable for confidential materials like corporate training or legal documents.

Does NexSub work completely offline, or do I need internet to download the AI models?

You need internet only once to download NexSub and its AI models. After that, subtitle generation works entirely offline without any internet connection required. The models run on your local machine, so speed and accuracy depend on your hardware rather than network availability.

Can I display the original language and translated subtitles at the same time?

Yes. NexSub supports bilingual display, so you can watch a video with both the original language subtitles and the translated version visible simultaneously. This is useful for language learning or following content where you want to compare the original text with the translation.