About
Vico - Local-First Video Converter & Transcriber
Convert, crop, trim and transcribe videos entirely in your browser with no uploads, no servers, complete privacy.
Built on browser-native APIs:
WebCodecs for hardware-accelerated video/audio processing
WebAssembly (ONNX Runtime) for in-browser transcription
Key Features:
Local-First Privacy: Everything runs 100% locally in-browser. Your files never leave your device.
Format Support: Convert between MP4, WebM, MOV, MKV (video) and MP3, AAC, WAV (audio) with full codec control — H.264, H.265/HEVC, VP9, AV1.
Video to Audio: Extract audio from any video file instantly.
Visual Cropping: Crop with preset aspect ratios (16:9, 9:16, 1:1, 4:5, etc.) or free-form crop
In-Browser Transcription (Beta): Powered by whisper.cpp with model cached to your browser. Supports multiple languages with automatic detection
(Transcription is in Beta — minor bugs exist, full rollout coming shortly). The transcription still runs on the main thread (ONNX WASM), which can cause UI freezing. Memory exhaustion - Loading large video + audio buffer + Whisper model exceeds browser limits so avoid transcribing large files and using large whisper models until v2 is released.
Files <500MB: Processed instantly in-browser
Files >500MB ( prefer ultrafast mode): Downloaded to device for processing