Live Subtitle Ai
Live AI subtitles & translation for any app on Windows
Details
- External ID
- 1261238
- Source
- PH
- Company
- —
- Product
- Subtitle Kit
- Website domain
- producthunt.com
- Launched
- Sept. 29, 2026
- Cohort
- —
- Upvotes
- 1
- Upvotes percentile
- 0.30815693820825313
- Tags
- Productivity, Artificial Intelligence, GitHub, Video
- Fetched at
- Sept. 29, 2026, 5 p.m.
- Updated at
- Sept. 29, 2026, 5 p.m.
Description
ExtormSub adds real-time AI subtitles to anything playing on your Windows PC — YouTube, movies, games, meetings, streams. It captures system audio or mic, transcribes locally with whisper.cpp or faster-whisper (GPU or CPU, nothing uploaded), and overlays a transparent, click-through subtitle window above any app. Optional live translation into your language via any OpenAI-compatible API, or fully free & offline with built-in LibreTranslate. No admin rights, no cloud dependency for speech.
Enrichment
- Theme
- voice dictation and control tools
- Vertical
- Horizontal
- Function
- Workflow automation
- Audience
- Prosumer
- AI stance
- AI-native
- Project type
- Commercial product
- Normalized one-liner
- real-time speech translation and subtitle overlay for windows users
- Manually corrected
- False
Could you build this?
Partial Creating a desktop overlay UI is straightforward, but capturing low-latency loopback system audio in Windows, feeding it to native C++ bindings for whisper.cpp/faster-whisper, and managing real-time streaming inference without lag requires native desktop system integration.
What it would actually take: The application requires a Windows desktop framework (C#/WPF, C++, or Tauri/Rust) using Windows Core Audio (WASAPI) loopback capture to record system output in real-time. The hard part is pipeline orchestration: managing streaming VAD (voice activity detection), chunking audio, interfacing via FFI with whisper.cpp/faster-whisper with hardware acceleration (DirectML/CUDA), and rendering an overlay window using Windows WS_EX_TRANSPARENT/WS_EX_LAYERED styles without stuttering.
Competitors
Other products that read as similar to this one — 175 launches clear the similarity bar, closest 8 shown.
Attention rank: #76 of 176 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 319 days after the earliest competitor.
- LivaSub AI Live Captions · ph · 2026-09-24 · 1 upvotes · similarity 0.59
- Media-AI: Video Subtitles · ph · 2026-09-20 · 1 upvotes · similarity 0.57
- AI Video Translator · ph · 2026-09-25 · 1 upvotes · similarity 0.55
- SublyAI · ph · 2026-09-25 · 1 upvotes · similarity 0.53
- LiveSub · ph · 2026-09-22 · 1 upvotes · similarity 0.49
- LiveTranslate · ph · 2026-09-30 · 1 upvotes · similarity 0.49
- Omni Player by OmniSubs · ph · 2026-09-23 · 1 upvotes · similarity 0.49
- AI Recognizer · ph · 2026-09-30 · 1 upvotes · similarity 0.49
Other launches for this product
Same idea, different domain
Nobody's really built a workflow automation tool for Real estate yet.