UK TV long form (DPP) 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 ±0.5 LUFS | Fixed with a level change |
| True peak | −1.0 dBTP max | Limited, with audition |
| Format | 48 kHz, 24-bit PCM | Flagged |
Worth knowing
Live content is allowed ±1.0 LU. The recommended true peak is −3 dBTP or lower, and a file fails above −1 dBTP. Loudness range is guidance only: aim for 18 LU or less.
Data source(s)
- DPP AS-11 technical delivery standard v6.6, October 2026 (ITV edition)
Figures taken from the documents above and last read on 10 October 2026.
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