AI Subtitle Generator Online
Adding captions increases video watch time and accessibility. Utool's AI Subtitle Generator automatically transcribes audio or video file speech with high precision. Powered by Groq Whisper, it supports formats like MP3, MP4, WAV, and outputs timed SRT tracks.
Performance Advantage
- Zero server uploads: Safe from leaks.
- Instant execution: Local CPU operations.
Key Benefits
Whisper-Large AI Accuracy
Utilizes Groq's high-speed Whisper pipeline to transcribe complex accents and voices clearly.
Timed SRT Subtitles
Outputs timed segments in SRT subtitle format, ready to load directly into video editors.
Universal Formats
Supports MP3, MP4, WAV, MOV, M4A with high-performance local buffer streaming.
How to Use Online
Upload your video (MP4, MOV) or audio (MP3, WAV) file.
Click 'Generate Subtitles' to run transcription.
Review the timed transcription text segments in the preview.
Download timed SRT or plain TXT files.
Increasing Accessibility and Reach with Subtitles
Captions are vital for video accessibility on social channels where clips autoplay on mute. Utilizing high-performance AI engines to write transcripts ensures accuracy and saves time compared to manual transcription workflows.