VTT → SAMI
Convert VTT to SAMI
Free online VTT to SAMI subtitle converter. Transform WebVTT (.vtt) files to SAMI (.smi) format instantly in your browser. No upload required.
Format Comparison
| VTT | SAMI | |
|---|---|---|
| Full Name | WebVTT | SAMI |
| Extension | .vtt | .smi |
| Category | text | xml |
| Key Features | CSS styling support, Cue positioning, Region definitions, HTML5 native support | Multi-language support, CSS styling, HTML-like syntax, Class-based language switching |
| Common Uses | HTML5 video, Web streaming, HLS/DASH manifests, Browser-based players | Windows Media Player, Microsoft platforms, Multi-language captioning |
| Limitations | Limited legacy player support, More complex than SRT, Browser rendering varies | Windows-centric, Verbose syntax, Limited modern tool support |
How to Convert VTT to SAMI
- 1
Open the subtitle converter
Go to the Subtitle Tool and select your source VTT file by pasting the text or uploading the .vtt file.
- 2
Set your framerate
Choose the framerate that matches your video (e.g., 23.976, 25, 29.97). This ensures frame-accurate timestamp conversion.
- 3
Select SAMI as output format
Choose SAMI (.smi) from the output format dropdown.
- 4
Download your converted file
Click the download button to save your converted SAMI file. You can also copy the output text directly.
Frequently Asked Questions
How do I convert VTT to SAMI?
Upload or paste your WebVTT (.vtt) file into the converter, select SAMI as the output format, and click Convert. The tool processes everything in your browser — no file uploads to a server.
What is the difference between VTT and SAMI?
VTT is webvtt (web video text tracks) is the w3c standard for displaying timed text in html5 video. SAMI is sami (synchronized accessible media interchange) is a microsoft-developed caption format using html-like markup. They differ in features like css styling support (VTT) versus multi-language support (SAMI).
Is the VTT to SAMI converter free?
Yes, completely free with no limits. The converter runs entirely in your browser using the timecodes library — no server processing, no sign-up, no watermarks.
Will I lose formatting when converting from VTT to SAMI?
SAMI has some limitations: windows-centric. Timing accuracy is preserved using frame-based conversion through the timecodes library, but format-specific features like css styling support and cue positioning may not carry over.