Build the version map before the final mix
A campaign can begin with a single film and end with a complex set of cutdowns, languages, platform variants and retail uses. If these are treated as late exports, the sonic identity may be reduced to whatever fits the remaining seconds. Map likely versions early. Distinguish confirmed requirements from provisional ones, and assign someone to update the list as media plans change.
For each version, record duration, picture reference, language, channel layout, file format, intended destination and approval owner. Include the source of the technical specification and the date it was checked. Platform requirements change, and a remembered value from another job is not a reliable delivery instruction. Where the destination has not supplied a requirement, ask rather than inventing a universal target.
Preserve relationships rather than whole arrangements
A short cut may not have room for the full musical phrase, the voiceover and an exposed product detail. Return to the identity definition. If the recognisable relationship is a particular sequence of attacks, protect that sequence and remove supporting material. If the tactile action carries the campaign’s meaning, create space around it rather than simply making every stem louder.
Shortening is a creative task. Cutting the middle out of a long mix can leave an unresolved harmony or a cue with no preparation. Ask the composer for workable short forms, and ask the sound designer which decays or transitions depend on their original context. Review the shortened film as its own experience, not only as a checklist of elements retained from the master.
| Context | Protect | Check |
|---|---|---|
| Long-form film | Narrative pacing and dynamic relationships | Full-length transitions and speech clarity |
| Short social edit | Identity-bearing gesture and essential action | Small-speaker audibility and abrupt endings |
| Retail loop | Coherent entry and exit points | Repetition, installation level and room conditions |
| Audio-only version | Meaning without the picture | Whether unseen actions remain understandable |
Measure the right thing, then listen
ITU-R BS.1770 describes algorithms for measuring audio programme loudness and true-peak level. EBU R 128 provides loudness-normalisation recommendations for its broadcast context. ATSC A/85 addresses loudness management in digital television. These references are related, but they should not be flattened into one number for every use. A commissioning broadcaster or platform may specify its own required implementation and deliverables.
Loudness measurements help assess compliance; they do not guarantee that the mix is intelligible or creatively balanced. A brief transient, a masked consonant and an awkward music entrance can pass a numerical check while still needing attention. Measure the exported file, inspect for clipping and unexpected channel behaviour, then listen all the way through. The session playback is not proof that the rendered asset is correct.
Use a small, repeatable listening circuit
Check on a trusted monitor setup, headphones and a representative small speaker. Where appropriate, check mono compatibility and the actual platform transcode. Note the device and listening conditions rather than reporting only that a mix “works on mobile”. Different phones, headphones, rooms and playback settings vary. A practical check exposes risks; it does not certify every possible listener experience.
Keep review level sensible and reasonably consistent between alternatives. Louder playback can obscure meaningful comparisons, and prolonged exposure is not a badge of careful work. Where a cue relies entirely on very low-frequency energy or wide stereo effects, test whether its identity remains when those features are reduced. Consider a purpose-made adaptation rather than overcorrecting the master for one constrained device.
The last creative decision may be the one made by an editor who never attended the first meeting.
Make handover difficult to misunderstand
Supply a clear manifest linking each file to its picture version, language and approval state. Use stable names rather than an expanding sequence of “final” labels. Separate approved masters from work in progress. Include appropriate stems, consistent start points, tail guidance and notes about processing that affects reconstruction. Stems do not always sum to the master when shared bus processing responds differently, so test the promised workflow.
Rights documentation should travel with the delivery plan, without exposing unnecessary personal information. Record permitted media, territories, term, adaptation permissions and any restrictions that matter to future use. Music, performances, samples and recorded locations can raise different questions. Obtain suitable professional advice rather than assuming a commission or a library download covers every eventual campaign extension.
Close the loop after publication
Where access permits, check the published asset for unexpected changes in level, timing or encoding. Keep a correction route and archive the approved version alongside its specification. Document departures and their reasons. A concise post-delivery note helps the next production preserve what mattered, rather than repeating an avoidable compromise because it happened to appear in the most recent export.
Return to the identity decision →
Draft your sound brief