Free online VTT to SUB converter
Convert VTT subtitles to SUB for broader player compatibility and easier playback.
Convert VTT to SUB online - free
Your file is processed instantly and never stored on our servers.
How to convert vtt to sub file
- Video subtitles
- No ratings yet.
101convert.com assistant bot
3mos
VTT and SUB are subtitle file formats used to display captions in video playback. VTT usually means WebVTT, a modern subtitle format commonly used on websites and streaming platforms. SUB can refer to several subtitle formats, but in file conversion it often means a simple subtitle file used by media players, sometimes paired with an IDX file in the VobSub format or used as a standalone subtitle file depending on the software.
What is VTT
VTT files store subtitle cues with timing, optional styling, positioning, and metadata. They are widely supported in browsers and online video platforms.
What is SUB
SUB files are subtitle files used by many media players and authoring tools. Depending on the subtype, they may contain plain subtitle timing and text or bitmap-based subtitle data.
Why convert VTT to SUB
Converting VTT to SUB is useful when a video player, editing tool, or playback device does not support WebVTT but works better with SUB subtitles. This can improve compatibility with older media software and some standalone players.
How to convert VTT to SUB
The conversion usually involves importing the VTT file into a subtitle editor or converter and exporting it as SUB. If the target SUB format is a specific subtype, make sure the software supports that exact output.
- Open the VTT file in a subtitle editor.
- Check timing, line breaks, and character encoding.
- Choose File → Save As or File → Export.
- Select SUB as the output format.
- Save the converted subtitle file and test it in your player.
Best software for conversion
Aegisub is one of the best tools for subtitle editing and format conversion when you need control over timing and subtitle layout. It is especially useful if you want to review and adjust cues before exporting.
Subtitle Edit is another excellent choice because it supports many subtitle formats and offers easy conversion between them. For quick online conversion, a reliable subtitle converter can work well, but desktop software is usually safer for preserving timing and formatting.
Things to check before saving
- Timing accuracy after conversion.
- Encoding, especially if subtitles contain special characters.
- Line breaks and reading speed.
- Compatibility with the target media player.
Summary
VTT to SUB conversion is a practical way to make subtitles work with more players and devices. For the best results, use Subtitle Edit or Aegisub, verify the output format, and test the subtitle file after export.
Note: This vtt to sub conversion record is incomplete, must be verified, and may contain inaccuracies. Please vote below whether you found this information helpful or not.
VTT vs SUB: format comparison
How the VTT and SUB formats compare on the properties that matter most for this conversion.
| Property | .VTT WebVTT | .SUB MicroDVD subtitle |
|---|---|---|
| Text styling | Basic | Basic |
| On-screen positioning | Yes | Yes |
| Timing precision | Milliseconds | Frame-based |
| Storage | Embedded in the file | Separate file |
| Player support | Wide | Limited |
| Plain-text readable | Yes | Yes |
| Typical file size | Very small | Very small |
| Open standard | Yes | No |
| Introduced | 2010 | — |
| Developer | W3C | — |
| MIME type | text/vtt | — |
Frequently asked questions
Is the VTT to SUB converter free?
Yes, converting VTT to SUB on 101convert.com is completely free. No registration, email address or installation is required.
How large can my VTT file be?
You can upload VTT files up to 100 MB and convert up to 100 files at once in a single batch.
What happens to my uploaded files?
Files are processed automatically and deleted from our servers within a few minutes after conversion. We never view or share your files.
Do I need to install any software to convert VTT to SUB?
No. The VTT to SUB conversion runs entirely online in your browser and works on Windows, Mac, Linux, Android and iPhone.
Did the conversion fail?
In most cases, the cause is an incorrect file format. Please upload a valid VTT file for this VTT to SUB conversion. Occasionally, the issue may be on our side. We analyze recurring conversion failures and disable or fix the converter if we detect a defect.