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MP4 to SRT

MP4 to SRT, generated locally

Turn an MP4 video into an SRT subtitle file on your own computer. SnailText reads the audio, transcribes the speech, and writes the SRT, no upload and no per-minute meter.

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Generate SRT and VTT locally, nothing uploaded

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Convert MP4 to an SRT subtitle file

An SRT is the most widely supported subtitle file, and it is what most players and editors expect. SnailText makes one from your MP4 by transcribing the speech in the video and writing the timing into an SRT, all on your machine.

You get a separate .srt file, not captions burned into the video, so the subtitles stay editable and you can attach them wherever you need them.

How to convert MP4 to SRT

  1. Open the Transcribe files screen in SnailText.
  2. Add your MP4 video (or a folder of videos).
  3. Choose SRT as the output before you run it.
  4. Run it. The .srt file is saved next to your video, ready to drop onto it.

Try it on your own files

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Generate SRT and VTT locally, nothing uploaded

MP4 to SRT free, without uploading the video

Online "mp4 to srt" converters upload your whole video to a server and usually cap the free tier. SnailText does it locally: the video never leaves your computer, there is no length limit beyond your memory, and the free tier has no watermark. Video formats use a one-time codec pack the app downloads for you, then run offline.

If you just want the plain transcript of an MP4 rather than a subtitle file, the MP4 to text page covers that. This page is specifically for generating an SRT subtitle file.

MP4 to SRT FAQ

How do I convert an MP4 to an SRT file for free?
Install SnailText, open Transcribe files, add your MP4, choose SRT as the output, and run it. It generates the SRT locally with the Whisper model, no account and no per-minute charge. Video formats use a one-time codec pack the app downloads for you.
Is the MP4 uploaded anywhere to make the SRT?
No. SnailText reads the MP4, pulls the audio, and transcribes it on your machine, so the video never leaves your computer. Online MP4-to-SRT tools upload the file to a server, which SnailText does not do.
What is the difference between MP4 to SRT and MP4 to text?
MP4 to SRT produces a timed subtitle file (.srt) you attach to the video. MP4 to text produces a plain transcript with no timestamps, for reading or editing. SnailText does both, you just pick the output before the run.
Does the mp4 to srt burn the subtitles into the video?
SnailText writes a separate SRT or VTT file and does not hardcode captions into the video. That keeps the subtitles editable and lets you attach them in any player or editor. If you want them burned in, overlay the SRT in a video editor afterward.
Are the subtitles word-level or phrase-level?
The subtitles are phrase-level: SnailText writes one cue per spoken phrase with a start and end time, the standard readable format for an SRT or VTT file. It does not produce word-by-word or animated karaoke-style captions.
How much does it cost?
The free tier generates subtitles locally with the compact Whisper models, no account and no per-minute meter. Pro adds the larger, more accurate models and an optional on-device AI cleanup pass, $7.49/mo or $89/yr for up to 3 devices.

More ways to transcribe and caption

Generate an SRT from your MP4

Free local subtitle generation, no account needed. SRT and VTT files on Mac and Windows.

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