What this guide helps you do
Create a voiceover timing map for AI video production
Key takeaways
- Use the accepted audio file, never word count, as the clock.
- Give every beat exact timecodes, one viewer outcome, and a visual budget.
- A changed voice track must explicitly invalidate dependent picture and finishing work.
Film evidence
Use rendered narration instead of estimated word timing
Names, scientific terms, pauses, emphasis, and delivery speed make a geology script's real duration unpredictable from word count. By accepting and measuring the voice first, the production can assign accurate visual windows to tectonic explanation, aerial orientation, summit detail, and the human expedition layer.
That stable timeline reduces late trimming and filler, but it does not remove editorial judgment. Cuts should follow changes in idea, location, scale, or emotional pressure rather than every sentence. The finished mix still needs checks for pronunciation, caption timing, music masking, silence, and whether each visual remains on screen long enough to be understood.
Rising Giants · 00:50 · Explainer cut. This is a finished first-party Onira production, not customer proof or archive footage.
View the full film and production notesWhat to watch for
- Narration determines duration before visual fan-out
- Shot changes follow ideas rather than equal intervals
- Captions and score align to the accepted performance
Section 1
1. Accept and version the narration master
Review factual wording, pronunciation, pace, emphasis, silence, clipping, and completeness in the exact file intended for the cut. Record the script revision, voice, language, file identity, reviewer, and approval date. A new performance is a new timing contract even when the filename remains unchanged.
The master should be decoded and measured from the media itself. Word count and text-to-speech estimates are planning hints; they cannot own shot duration, captions, or final assembly.
- +Exact accepted script and audio identity.
- +Pronunciation and performance approval.
- +Measured duration from decoded media.
Section 2
2. Segment the track into editorial beats
Split at changes of claim, example, place, time, scale, subject, emotional pressure, or act. Keep intentional pauses as real ranges. Preserve word alignment for captions when available, but choose beat boundaries editorially rather than at every sentence or punctuation mark.
Give each beat a stable ID, audio in and out time, approved spoken text, source or uncertainty note, and one sentence describing what the viewer must understand, notice, or feel by the end.
- +Stable beat ID and precise time range.
- +One viewer outcome per beat.
- +Claim and uncertainty boundary attached to picture planning.
Section 3
3. Allocate a visual budget and continuity boundary
Divide each measured beat into one or more visual jobs: orient, make concrete, compare, reveal consequence, or transition. Cut when the editorial idea changes, not because a fixed interval elapsed. A dense line may need restrained picture; a long explanation may need orientation, human detail, and consequence.
For every shot, separate appearance from motion. Record start and end state, geography, screen direction, people, wardrobe, objects, weather, and the transition into the next accepted shot. This turns the map into a usable contract for generation and continuity review.
- +Exact shot budget inside the beat duration.
- +Separate image and motion direction.
- +Explicit transition and continuity state.
Section 4
4. Finish and revise from the same clock
Captions should align to the accepted take. Score should follow real act durations. Sound effects should fit the scene without masking words. The canonical timeline should reference the same narration version and beat IDs used by picture planning.
When the script or performance changes, calculate and invalidate the affected scope: source record, beat timing, shot durations, trims, captions, score, effects, and neighboring transitions. Preserve accepted unaffected work, then rerun one uninterrupted sequence review after repair.
- +One audio version across picture and finish.
- +Bounded invalidation after a change.
- +Normal-speed review before technical diagnosis.
Working standard
Publication checklist
- 01The exact narration file is accepted, measured, and versioned.
- 02Each beat has an ID, time range, spoken text, and viewer outcome.
- 03Each shot has a purpose and fits its measured budget.
- 04Appearance, motion, transitions, and continuity are separate fields.
- 05Captions, score, effects, and render use the same clock.
- 06Revision rules preserve unaffected accepted work.
Primary references
Sources and further reading
Policy and model capabilities change. These sources were reviewed on July 13, 2026; open the current official page before making a production or publication decision.
Related production guides
Questions
What does audio-first video production mean?
For narration-led work, it means the exact approved voice track is measured and converted into a beat-level timing map before final visual architecture is generated.
What belongs in a voiceover timing map?
Use beat IDs, audio in and out points, approved text, viewer outcome, source or uncertainty note, visual jobs, shot ranges, transitions, continuity state, and acceptance status.
What happens when the narration changes?
Create a new audio version and explicitly invalidate affected timing, picture, captions, score, effects, and transitions. Preserve accepted work outside the changed scope.