AAC to FLAC
Convert AAC audio to FLAC. You are starting from AAC, which is cleaner than MP3 at the same bitrate, and standard across Apple devices. FLAC is lossless compression, so bit-perfect audio at about half the size of WAV. FLAC is lossless, but it cannot rebuild what AAC already threw away. You get a larger file containing exactly what the AAC held, which helps before editing and achieves nothing as an archive upgrade. Runs on your own Vistalyth Tools instance. Files never reach a third party.
Features
- Lossless encode, with no quality call to make
- Tags, artwork, and track metadata carried across wherever FLAC supports them
- Batch conversion across a whole library
- Your AAC files are processed on your own server and never uploaded anywhere
What you can do
- Move a AAC into FLAC for editing or archiving
- Standardise a mixed music or voice library on a single format
- Meet an upload requirement that names FLAC specifically
Self-hosted. Your files never leave your network.
Vistalyth Tools runs entirely on your own infrastructure. Files processed with AAC to FLAC are never uploaded to third-party servers. Deploy a single Docker container and process files with full privacy, no watermarks, and no usage limits. Open source under AGPL-3.0.
Frequently asked questions
- Will AAC to FLAC lose quality?
- Nothing is lost on this hop. Whether that is useful depends on the source: from a lossy original you get a faithful copy of already-reduced audio, not a restored one.
- Are tags and cover art kept?
- Yes, wherever the target has somewhere to put them. FLAC carries the common fields; anything exotic in the source may not survive.
- Anything peculiar about AAC I should know?
- A raw .aac stream has no container and no dependable duration header, which is why some players scrub through it badly. Converting fixes that even when the codec stays the same.
- Can I convert a whole folder at once?
- Yes. Batch conversion applies the same settings to every file and returns them together.
Ready to try AAC to FLAC?
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