3. Export review
When an export from the ‘Export file(s) …’ button finishes, the output histogram stays on screen and the export review opens in front of it. The review measures the saved files, including every completed file from a batch, and checks them against the Export target, which is what the export settings guarantee:
- The limiter ceiling, as true peak in True Peak mode or sample peak in Peak mode.
- With export compensation set to Integrated, Integrated LUFS within 1 LU of the target range center.
With the limiter off and compensation other than Integrated, the export target has nothing to check. Choose a reference target or Custom limits to check delivery requirements, and use Save HTML … or Save CSV … to keep a report. Hover over a result or value to see its limit and status. Close the review to return to the optimizer.
Measurements include duration, sample rate, channel count, channel layout, and:
| Measurement | Meaning |
|---|---|
| Integrated LUFS | BS.1770 K-weighting and gating over the file, weighted by channel layout with LFE excluded; requires at least 400 ms and measurable gated audio. |
| Whole-file RMS | Mean squared sample energy across all channels, including LFE and silence, expressed in dBFS. |
| LRA | Gated short-term loudness range per EBU Tech 3342; requires at least 3 seconds. Below 60 seconds it is provisional and its limit is not evaluated. |
| Sample peak | Highest absolute sample across all channels, in dBFS. |
| True peak | Highest reconstructed peak across all channels, in dBTP. |
Integrated, LRA, and true peak use the same measurement and channel weighting as live metering. Channels without a known position, such as unlabeled discrete channels, do not count toward Integrated or LRA.
Each selected criterion is Within range, Outside range, or Not evaluated, using unrounded measurements. Missing measurements, unselected limits, and a mismatched mono/stereo profile are not evaluated. Silence has -inf RMS and peak readings; its Integrated and LRA readings are unavailable.
In Custom limits, choose Integrated LUFS or whole-file RMS and enter inclusive minimum/maximum values. Optionally set maximum true peak (dBTP), sample peak (dBFS), and LRA (LU). Leave a field blank to omit that limit.
Streaming targets are playback references, not upload acceptance tests. The ACX profile checks RMS and sample peak only. Noise floor, encoding, chapter spacing, dialogue gating, and other delivery requirements are not evaluated. Dialogue-gated Netflix checks are not supported. A report evaluates only the selected audio limits.