Launching today

NexSub

Launching today

The World’s First Fully Offline AI Video Subtitle Translator

7 followers

The World’s First Fully Offline AI Video Subtitle Translator

7 followers

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NexSub – Live subtitles for any online video, 100% offline and private. Watch YouTube, Netflix, live streams, or Zoom calls—NexSub captures system audio in real-time and generates accurate subtitles right on your machine. No cloud, no uploads, no subscriptions. Supports 100+ languages with bilingual display. Latency under 1.5s. One-click export to SRT/VTT. Perfect for travelers, privacy-conscious teams, and anyone tired of missing captions. Subtitles for everything you watch. Yours alone.

Free Options

Launch tags:Video

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Maker

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NexSub: The World’s First Fully Offline AI Video Subtitle Translator Enjoy accurate, real-time multilingual subtitles for any video in complete privacy. Break down language barriers instantly, 100% locally on your machine—no internet required, no subscriptions needed. Have you ever experienced these frustrating moments? - **The Language Barrier:** Found an incredible YouTube tech tutorial or regional indie film, but the creator speaks a language you don’t understand, and there are no subtitles available. - **The Commute Blackout:** Wanted to watch downloaded courses or documentaries during a flight or subway commute, but online translation tools stopped working without Wi-Fi. - **The Privacy Nightmare:** Need to process confidential corporate training, legal depositions, or internal materials, but company policy strictly forbids uploading sensitive data to third-party cloud AI services. **If any of these sound familiar, NexSub was built for you.** ## 🚀 Why Choose NexSub? ### 🔒 100% Private & Local-First Every second of your video and every byte of system audio stays on your computer. With **zero data leakage** and military-grade privacy by design, your viewing history and sensitive data remain yours alone. ### 🌐 100+ Languages Supported Powered by advanced local AI models, NexSub seamlessly handles everything from global mainstream languages (English, Spanish, Mandarin, French, Japanese) to regional dialects and niche accents. ### ⚡ True Real-Time, Zero-Cloud Costs By capturing your system's soundcard (Stereo Mix) directly, NexSub generates subtitles on the fly like a personal interpreter. No cloud APIs, no per-minute transcription fees. **Run it forever, for free, after download.** ### 🎯 Universal Compatibility One-click start. Since it captures raw system audio, it works universally with **YouTube, Netflix, Zoom meetings, Coursera, VLC player, or any local media file**. ## 🛠️ Core Application Scenarios **Scenario** **The Problem** **The NexSub Solution** **Global Online Video** Missing platform closed captions or poor auto-translation quality. Turn on **"Real-Time Mode"** to capture system audio. Instant subtitles appear over YouTube, Netflix, or live streams. **Local Media Files** Hard-to-find `.srt` files; manual synchronization takes hours. Just play the video. NexSub listens and translates in real-time as the video runs. **No-Internet Zones** Cloud-based translation apps are useless on planes or remote areas. NexSub runs completely offline. Watch and translate downloaded files anywhere, anytime. **Confidential Content** High risk of data leaks when uploading internal assets to the cloud. Enterprise-grade security. 100% local processing complies with strict corporate data governance. ## 💎 Premium Features Designed for Power Users - **Bilingual Display Support:** Display both the original spoken language and your translated language simultaneously—perfect for language learners and international teams. - **One-Click Subtitle Export:** Export the locally generated transcripts into standard `.srt` or `.vtt` formats instantly after watching. - **Low-Latency Architecture:** Optimized local AI inference ensures the latency between audio and subtitle generation is kept under **1.5 seconds** for a seamless viewing experience. ## 💻 Hardware Requirements & Performance Notice NexSub leverages your local GPU capability to run cutting-edge AI translation models locally. - **Minimum Configuration:** NVIDIA GTX 1660 / RTX 2060 (6GB VRAM) — _Suitable for standard speed and mainstream language models._ - **Recommended Configuration:** NVIDIA RTX 3060 / 4060 or higher (8GB+ VRAM) — _Unlocks high-precision large models and ultra-low latency real-time translation._ > **Supported Graphics Cards:** > > - **RTX 30 Series:** RTX 3050 (8GB) up to 3090 Ti > > - **RTX 40 Series:** RTX 4060 up to 4090 > > - **RTX 50 Series:** _Full day-one support for next-gen RTX 50 series architecture._ > > > _(Note: We are actively optimizing for Apple Silicon M-Series and AMD GPUs in our upcoming product roadmap!)_ ### **Translate Everything. Available Everywhere. Total Peace of Mind.** Say goodbye to cloud subscriptions, buffering wheels, and privacy concerns. Experience true viewing freedom with NexSub today. **purchase** Its price is USD$9/license Zero Subscription. Zero Hidden Fees.

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2d ago

How does it actually capture system audio on macOS without needing any special permissions or kernel extensions? That part always trips up tools like this.

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13h ago

Maker

@nilgnxmc0 work on Windows only.

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12h ago

how does it actually capture system audio without breaking on macOS sonoma with all the new mic permissions stuff?

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10h ago

Subtitles show up almost instantly on YouTube clips, and I love that nothing leaves my laptop. Bilingual mode on a Japanese podcast was a nice surprise, though accuracy drops a bit on fast speakers.

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12h ago

Finally got captions on a stream I thought would never have them, and the bilingual mode handled English/Japanese side by side without lag. The offline angle is what sold me, no more trusting random sites with my audio.

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10h ago