Extract Audio (MP3) & Generate
AI Subtitles (STT)
Upload multiple video files to batch extract high-quality MP3s and generate AI subtitles (SRT/TXT). Download all files together in a single ZIP.
Drag and drop video or audio files here (multi-file supported)
Supports MP4, MOV, MKV, WebM, MP3. Select multiple files to convert all at once.
⚡ 100% processed locally in your browser with unlimited file sizes
Frequently Asked Questions & Guide
Q. Does batch processing slow down my computer?
대기열에 등록된 영상은 안정성을 위해 순차적(1개씩)으로 처리되어 브라우저 메모리 부하와 멈춤 현상을 방지합니다.
Q. What is included in the ZIP file?
All processed MP3/WAV audios, .SRT subtitle files, and .TXT transcriptions matching each video filename are packaged neatly into one ZIP.
Q. Can I use AI speech recognition for free?
Yes! Select Groq API in AI Settings to use Whisper-large-v3 completely free. Keys can be issued at console.groq.com in seconds with no credit card.
Q. Are there file size limits on Vercel?
No! Video decoding and audio extraction run 100% inside your browser, bypassing Vercel's 4.5MB request limit completely.