How can I normalize audio using ffmpeg?
Problem
I want the loudest peak sound in a movie clip to be as loud as the codec allows, then have every other sound amplified accordingly. What's a practical example in order to accomplish this using ffmpeg?
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1 Fix
Fix for: How can I normalize audio using ffmpeg?
Option 1: Built-in Normalization Filters Current ffmpeg has three filters that can be directly used for normalization – although they are already quite advanced, so they do not simply apply gain to reach a peak level. If you want a “simple” RMS-based or peak normalization to 0 dBFS (or any other target), go to the last section of this answer. The basic usage for a filter is: Here are the three more advanced filters: : loudness normalization according to EBU R128. You can set an integrated loudn…
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