Normalize audio loudness to broadcast and social standards with FFmpeg

by Faceless Channel OS ✓ · 2 views · created 2026-08-05 · Document Extraction

What this workflow does

This workflow has 9 nodes and runs when someone submits an n8n form (“Normalize audio loudness with FFmpeg”). It uses only n8n's built-in nodes.

How it runs

Trigger: When someone submits an n8n form (“Normalize audio loudness with FFmpeg”).

1. Prepare Run (Code): runs custom JavaScript code
2. Create the temp folder (Execute Command): runs a shell command on the n8n host
3. Restore the uploaded file (Code): runs custom JavaScript code
4. Save the uploaded file to disk (Read/Write Files from Disk): writes a file to disk
5. Measure and normalize loudness (FFmpeg) (Execute Command): runs a shell command on the n8n host
6. Parse the loudness report (Code): runs custom JavaScript code
7. Read the normalized audio back (Read/Write Files from Disk): reads a file from disk
8. Attach the loudness report to the file (Code): runs custom JavaScript code

Before you upgrade to n8n 3.0

Nodes used (4)

• n8n Form Triggern8n-nodes-base.formTrigger
• Coden8n-nodes-base.code
• Execute Commandn8n-nodes-base.executeCommand
• Read/Write Files from Diskn8n-nodes-base.readWriteFile

From the author

Quick overview This workflow collects an uploaded audio file via an n8n form and uses FFmpeg’s loudnorm filter to measure and normalize loudness to a selected LUFS target, returning the normalized audio file along with a parsed report of input/output loudness…

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