EBU R128 long form loudness spec
What a file has to measure to pass this spec, and where each figure comes from.
| Check | Required | In LC-1 |
|---|---|---|
| Integrated loudness | −23.0 ±0.2 LUFS | Fixed with a level change |
| True peak | −1.0 dBTP max | Limited, with audition |
Worth knowing
The ±0.2 LU is the measurement tolerance R128 allows in quality control. Live content is allowed ±1.0 LU.
Data source(s)
- EBU R 128 v5, November 2023
Figures taken from the documents above and last read on 10 October 2026.
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