Live Translator di Jack Knight
Real-time audio translation with close-captioning on videos. Captures tab audio and streams it to a local companion app for speech-to-text and translation.
SperimentâlSperimentâl
Metadâts de estension
Informazions su la estension
Version 0.2.0 â Initial Release
Live Translator is a browser extension that provides real-time audio transcription and translation with close-captioning on videos.
### Features
Audio Capture & Transcription
- Captures audio from browser tabs using the Tab Capture API (Chrome) or HTML5 captureStream() (Firefox)
- Streams audio to a local companion app (whisper.cpp) for real-time speech-to-text processing
- All processing runs locally on your machine â nothing is sent to external servers
Translation
- Translates transcribed speech into a user-selected target language
- Supports multiple translation models via the companion app
- Source language can be set manually or left on auto-detect
Caption Overlays
- Injects a close-captioning overlay at the bottom of HTML5 video elements
- Shows original text and translated text simultaneously
- Adjustable opacity (background darkness) and font size
- Captions auto-hide after 5 seconds of silence
- Fade-in animation for smooth appearance
Video Player Integration
- Injects a "Caption" button directly onto video players (YouTube, Twitch, etc.)
- Button appears on hover â toggle captions with one click
- Automatically detects video elements even on dynamic/SPA websites
- Re-checks periodically for late-loading videos
Model Management (Popup)
- Browse, download, select, and delete STT models
- Visual indicators for active, downloaded, and available models
- Model size and translation capability shown in the list
- One-click model switching
Companion App Integration
- WebSocket connection to ws://127.0.0.1:9876
- Auto-reconnect with configurable delay
- Status indicators (connecting, connected, error)
- Download link for the companion app when not detected
Settings & Preferences
- Server address configuration
- Source and target language selection
- Caption mode (video overlay only in this release)
- Opacity and font size controls
- All settings persisted via storage.local
### Technical
### Known Limitations
Live Translator is a browser extension that provides real-time audio transcription and translation with close-captioning on videos.
### Features
Audio Capture & Transcription
- Captures audio from browser tabs using the Tab Capture API (Chrome) or HTML5 captureStream() (Firefox)
- Streams audio to a local companion app (whisper.cpp) for real-time speech-to-text processing
- All processing runs locally on your machine â nothing is sent to external servers
Translation
- Translates transcribed speech into a user-selected target language
- Supports multiple translation models via the companion app
- Source language can be set manually or left on auto-detect
Caption Overlays
- Injects a close-captioning overlay at the bottom of HTML5 video elements
- Shows original text and translated text simultaneously
- Adjustable opacity (background darkness) and font size
- Captions auto-hide after 5 seconds of silence
- Fade-in animation for smooth appearance
Video Player Integration
- Injects a "Caption" button directly onto video players (YouTube, Twitch, etc.)
- Button appears on hover â toggle captions with one click
- Automatically detects video elements even on dynamic/SPA websites
- Re-checks periodically for late-loading videos
Model Management (Popup)
- Browse, download, select, and delete STT models
- Visual indicators for active, downloaded, and available models
- Model size and translation capability shown in the list
- One-click model switching
Companion App Integration
- WebSocket connection to ws://127.0.0.1:9876
- Auto-reconnect with configurable delay
- Status indicators (connecting, connected, error)
- Download link for the companion app when not detected
Settings & Preferences
- Server address configuration
- Source and target language selection
- Caption mode (video overlay only in this release)
- Opacity and font size controls
- All settings persisted via storage.local
### Technical
- Chrome MV3 with service worker
- Firefox MV2 with non-persistent background page
- PCM audio streaming (Int16, 16kHz sample rate)
- WebSocket binary protocol for audio data
- All innerHTML usage replaced with safe DOM methods for store compliance
### Known Limitations
- Firefox does not support tabCapture â uses captureStream() on video elements instead (requires an active <video> tag on the page)
- Requires the local companion app to be installed and running separately
- Floating overlay mode (captions outside the browser) is planned for a future release
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Permès e dâts
Permès obligatoris:
- Acedi ai tiei dâts di ducj i sÎts web
Racuelte dâts obligatorie, daÝr dal svilupadôr:
- ContignĂťt dai sĂŽts web
Racuelte dâts facoltative, daÝr dal svilupadôr:
- Dâts tecnics e di interazion
Altris informazions
- Colegaments component adizionâl
- Version
- 0.2.0
- Dimension
- 22,71 kB
- Ultin inzornament
- 4 zile ĂŽn urmÄ (26 iun. 2026)
- Categoriis coreladis
- Licence
- Licence MIT
- Informative su la riservatece
- Lei la informative su la riservatece par chest component adizionâl
- Cronologjie versions
- Zonte ae racuelte