SAMI → VTT
Convert SAMI to VTT
Free online SAMI to VTT subtitle converter. Transform SAMI (.smi) files to WebVTT (.vtt) format instantly in your browser. No upload required.
Format Comparison
| SAMI | VTT | |
|---|---|---|
| Full Name | SAMI | WebVTT |
| Extension | .smi | .vtt |
| Category | xml | text |
| Key Features | Multi-language support, CSS styling, HTML-like syntax, Class-based language switching | CSS styling support, Cue positioning, Region definitions, HTML5 native support |
| Common Uses | Windows Media Player, Microsoft platforms, Multi-language captioning | HTML5 video, Web streaming, HLS/DASH manifests, Browser-based players |
| Limitations | Windows-centric, Verbose syntax, Limited modern tool support | Limited legacy player support, More complex than SRT, Browser rendering varies |
How to Convert SAMI to VTT
- 1
Open the subtitle converter
Go to the Subtitle Tool and select your source SAMI file by pasting the text or uploading the .smi 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 VTT as output format
Choose WebVTT (.vtt) from the output format dropdown.
- 4
Download your converted file
Click the download button to save your converted VTT file. You can also copy the output text directly.
Frequently Asked Questions
How do I convert SAMI to VTT?
Upload or paste your SAMI (.smi) file into the converter, select VTT 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 SAMI and VTT?
SAMI is sami (synchronized accessible media interchange) is a microsoft-developed caption format using html-like markup. VTT is webvtt (web video text tracks) is the w3c standard for displaying timed text in html5 video. They differ in features like multi-language support (SAMI) versus css styling support (VTT).
Is the SAMI to VTT 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 SAMI to VTT?
VTT has some limitations: limited legacy player support. Timing accuracy is preserved using frame-based conversion through the timecodes library, but format-specific features like multi-language support and css styling may not carry over.