MP3 to SRT
Make SRT subtitles from an MP3 of speech, such as a podcast or interview, timed line by line. Free, with no upload.
Drop an MP3 to make its SRT subtitles
The speech is recognized on your device, so nothing is uploaded and there's no limit on length.
MP3, M4A, WAV, FLAC, and other audio, or a video with sound.
How to convert MP3 to SRT
Open the MP3 and Mastershot writes subtitles from what's said in it, timed line by line, on your device. Download the SRT file for a podcast video, an audiogram, or your editor.
Step 1
Choose your MP3Pick a file or drop it above.Step 2
Make the subtitlesLines are timed to the speech on your device.Step 3
Download the SRTUse it in your editor or for a podcast video.
What to expect
- Supported inputs
- MP3 files, and any other recording or video this browser can read.
- What happens
- Whisper, a speech recognition model, writes down each word with its time, and the words are grouped into short lines that are easy to read.
- Limits
- The first time, the browser downloads the 77 MB speech model and keeps it. Speech comes out well; sung lyrics over music don't.
Private by design
Your video stays on your device
Mastershot processes your file locally in this browser. It does not need to be uploaded to a server, and you do not need an account to use the tool.
- No upload
- No signup
- No watermark
Questions
Yes. Make the SRT here, then add it to the video in your editor, or turn the MP3 into a video with MP3 to video.
No. Everything runs in your browser.