Replace the audio on your video files — fast. Drag in video and audio, Laybacker auto-matches the pairs, normalises loudness to broadcast spec, and exports. Built for sound post-production.
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Drop video and audio together — Laybacker matches them by duration and name, and lets you fix any pairing by hand.
Normalise to LUFS targets (EBU R128 −23, streaming −16, ATSC A/85) or full-scale peak, measured to ITU-R BS.1770-4.
Verify and fix head/tail silence for UK broadcast delivery, with clean fades to avoid clicks.
Keep the original streams or re-encode to H.264 / AAC. Smart filenames with optional date stamps.
No separate install — a pinned, bundled FFmpeg ships inside the app. Nothing else to set up.
Every file is processed on your own machine. Nothing is ever uploaded.
Open → Open.More info → Run anyway.
Don't just take our word for it — Laybacker is built to be independently checkable. Four ways to confirm it's safe and untampered:
The full source is public and every installer is built automatically by GitHub from a tagged commit, with public build logs. Read the code.
Each release is scanned by 70+ antivirus engines, with the report links in the release notes. Or scan it yourself at virustotal.com.
Every release publishes SHA256SUMS files so you can confirm your download matches our build exactly, byte for byte.
Each binary carries a cryptographic attestation tying it to the exact public source. Verify with gh attestation verify <file> --repo soundrich-bot/laybacker.