SRT and VTT files
SRT subtitle generator
In short
AutoSubtitles generates SRT, VTT, and TXT subtitle files from any video. It transcribes the audio with AI, lets you edit the text and timestamps, and exports a correctly formatted .srt or .vtt file you can use anywhere.
Overview
At a glance
| Best for | Creating subtitle files for any player or platform |
|---|---|
| File formats | SRT, VTT, TXT |
| Timestamps | Editable per line and per word |
| Languages | 20+ with automatic detection |
| Install | None, runs in the browser |
| Plan | Subtitle file download is a Pro feature |
Workflow
How it works
- 1
Upload your video
Drop in an MP4, MOV, or WebM file.
- 2
Auto-transcribe
AI generates timestamped subtitles from the audio.
- 3
Edit timestamps
Correct wording and adjust start and end times line by line.
- 4
Download .srt
Export a correctly formatted SRT, VTT, or TXT file.
Capabilities
Features
Standards-compliant files
SRT uses HH:MM:SS,mmm timing and VTT uses the WebVTT format, ready for any player.
AI transcription
Generate timestamped subtitles automatically instead of typing them out.
Precise timing control
Tune start and end times per line so every cue lands exactly right.
20+ languages
Transcribe in 20+ languages with automatic language detection.
Formats
Supported formats
| SRT | SubRip, HH:MM:SS,mmm timestamps |
|---|---|
| VTT | WebVTT, HH:MM:SS.mmm with header |
| TXT | Plain transcript, no timestamps |
Plans
Free vs Pro
Start free, upgrade only if you need more.
| Capability | Free | Pro |
|---|---|---|
| SRT, VTT and TXT download | No | Yes |
| AI subtitle generation | Yes | Yes |
| Editable text and timing | Yes | Yes |
| Export captioned video | Yes | Yes |
| HD and 4K export | No | Yes |
| Animations and word highlights | No | Yes |
| AI translation | No | Yes |
| Custom fonts | No | Yes |
| Saved style presets | No | Yes |
Use cases
Who it's for
YouTube creators
Upload an SRT alongside your video so viewers can toggle captions.
Educators
Provide subtitle files for lectures to meet accessibility requirements.
Podcasters
Generate transcripts and subtitle files from recorded episodes.
No account required, start in seconds
FAQ
Frequently asked questions
Q.How do I generate an SRT file from a video?
Upload your video to AutoSubtitles, let the AI transcribe the audio into timestamped subtitles, edit the text and timing, then download a formatted .srt file.
Q.What is the difference between SRT and VTT?
SRT (SubRip) uses comma-separated millisecond timestamps and is widely supported. VTT (WebVTT) uses period-separated timestamps with a header and is designed for the web. AutoSubtitles can export both.
Q.Can I edit the timestamps?
Yes. You can adjust the start and end time of each line, and even fine-tune word-level timing, before exporting.
Q.Is the SRT generator free?
Generating and editing subtitles is free. Downloading subtitle files such as SRT and VTT is part of the Pro plan.
Q.Will the SRT work on YouTube and other players?
Yes. The exported files follow the standard SRT and VTT formats, so they work with YouTube, video players, and editing software.
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