Download and install the latest version of Filestar.
Right click on one or more M4a file(s) on your desktop and select Convert with Filestar.
Type convert to ffv1 in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i file.m4a -c "convert to ffv1" (how).
Downloads - File Explorer─☐✕
This PC › Downloads
Home
Desktop
Downloads
Documents
Pictures
Music
.m4aInterview.m4a
.mp3Podcast.mp3
.pdfInvoice.pdf
.wavMemo.wav
Filestar*Help✕
Drop files here to get started
ConvertMergeCompressExtractMoveZip
Let your AI agent convert M4A to FFV1 (Lossless Video)
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 M4A files in my Downloads folder to FFV1 (Lossless Video)”
Or run it yourself:
filestarcli -i file.m4a -c "convert to ffv1"
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 M4A to FFV1 (Lossless Video)?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i file.m4a -c "convert to ffv1" on your computer, so your files stay on it.
An M4A file is an audio file created in the MPEG-4 format, a multimedia container format used to store compressed audio and video data. It contains audio encoded with either the Advanced Audio Coding (AAC) codec or the Apple Lossless Audio Codec (ALAC).