MP4 to Subtitle
AIAuto-generate subtitles from MP4
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Auto-generate subtitles from MP4
About MP4 to Subtitle
Subtitles make a video easier to follow, more accessible, and watchable with the sound off, which is how a lot of people scroll these days. Creating them by hand means pausing, typing, and timing every line, which can take hours for even a short MP4.
This tool listens to your MP4 and auto-generates subtitles from the spoken audio, so the captions are matched to what's being said. It works in your browser, free, with no signup and no watermark. Upload the video, let the tool transcribe and time the speech, and you get subtitles ready to use or refine. It's a quick way to add captions without the manual grind.
Common uses
- Add captions to an MP4 so it can be watched without sound
- Make a training or explainer video more accessible
- Generate a first-pass subtitle file to fine-tune later
- Caption social or marketing videos quickly
How to use
- 1
Upload your file
Click the upload area or drag & drop your file. Supports MP4. Up to 50 MB.
- 2
Click "Process — MP4 to Subtitle"
Click the process button. Your file is converted instantly on our secure servers.
- 3
Download your result
Preview and download your converted file. No watermarks, no quality loss, no expiry.
Why ToolHub?
- 100% Free — no account needed
- Works in your browser — no software required
- Instant results
- Secure and private
- No data stored
- Simple to use
FAQ
Are the subtitles timed to the speech?
Yes. The tool transcribes the audio and aligns the caption lines to roughly when each part is spoken.
How accurate are auto-generated subtitles?
Accuracy depends on clear audio. Clean speech works best, and it's always worth a quick review to fix any names or tricky words.
Can I edit the subtitles afterward?
Yes. The generated subtitles are meant as a strong starting point, and you can adjust the wording or timing as needed.
Can I use MP4 to Subtitle on mobile?
Yes — ToolHub is fully responsive and works on iPhone, Android, tablets and all modern browsers. No app install needed.