Download and install the latest version of Filestar.
Right click on one or more Obu file(s) on your desktop and select Convert with Filestar.
Type convert to opus in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i file.obu -c "convert to opus" (how).
Documents - File Explorer─☐✕
This PC › Documents
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Desktop
Downloads
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.obuContract.obu
.xlsxBudget.xlsx
.pdfReport.pdf
.pngLogo.png
Filestar*Help✕
Drop files here to get started
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Let your AI agent convert OBU to OPUS
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 OBU files in my Downloads folder to OPUS”
Or run it yourself:
filestarcli -i file.obu -c "convert to opus"
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 OBU to OPUS?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.obu -c "convert to opus" on your computer, so your files stay on it.
An OPUS file is an audio file created in the Opus format (also called "Ogg Opus"), a lossy audio format developed for Internet streaming. It uses both SILK (used by Skype) and CELT (from Xiph.Org) codecs and supports variable bit rates from 6 kb/s to 510 kb/s.
