Download and install the latest version of Filestar.
Right click on one or more Vtt file(s) on your desktop and select Convert with Filestar.
Type convert to sbv in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i file.vtt -c "convert to sbv" (how).
Documents - File Explorer─☐✕
This PC › Documents
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Desktop
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.vttContract.vtt
.xlsxBudget.xlsx
.pdfReport.pdf
.pngLogo.png
Filestar*Help✕
Drop files here to get started
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Let your AI agent convert VTT to SBV
Claude Code, Codex, Cursor and other agents can do this on your computer with Filestar. Your files stay on your machine.
Install Filestar and add it to your agents:
npm install -g filestar
filestarcli agent install
Then ask your agent:
“Convert the VTT files in my Downloads folder to SBV”
Or run it yourself:
filestarcli -i file.vtt -c "convert to sbv"
Runs on your computer, so your files stay on it. Works on Windows, macOS and Linux. 50 free conversions with the npm install, no account needed.
Can my AI agent convert VTT to SBV?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.vtt -c "convert to sbv" on your computer, so your files stay on it.
WebVTT (Web Video Text Tracks) is a text file format that is used to store subtitles and captions for online video content. It is supported by many web browsers and can be used to add captions and subtitles to HTML5 videos.
SBV (SubViewer) is a file format used for synchronized video subtitles. It consists of a text-based file with time codes and subtitle text that can be used to display subtitles while watching a video.