Troubleshooting

FFmpeg not found

Leonardo requires FFmpeg to run conversions.

• Linux: install via your package manager (example: sudo pacman -S ffmpeg).
• Windows/macOS: if your build does not bundle FFmpeg, install it and ensure ffmpeg is on your PATH.

“Output file exists” / overwrite prevented

Leonardo intentionally prevents overwriting existing files to protect your work. Choose a different output name or folder.

Conversion fails immediately

• Verify input file plays normally.
• Try a different output folder (permissions issue).
• Ensure you have free disk space.
• Check that FFmpeg runs in a terminal: ffmpeg -version

Audio out of sync / playback weird

This is usually source-related or container-related. Try the Resolve mode (MP4→MOV) or remux mode if available.

Where is the config stored?

Leonardo stores preferences such as theme, last folder, and last mode in a local configuration file on your system.

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