What should I do when my product video has no quiet moment for an audio description of an important visual action?

Identify the information that speech does not convey

Audio description communicates visual information needed to understand video content. It is not a second promotional voiceover or a narration of every decorative camera movement.

W3C WAI's Description of Visual Information guidance identifies several approaches, including integrated description, separate audio description and described video versions. It specifically discusses the case where descriptions cannot fit into existing audio spaces.

Begin by watching and listening to the actual final video. For each important action, write what a person relying on the audio would understand without seeing the screen.

If the narrator says 'press the side release' while the video clearly shows the control's location, determine whether that wording supplies enough location information. If the narrator only says 'easy to use,' the location and action may remain inaccessible.

Separate essential details from optional visual styling. A color-changing background may be incidental. A hidden latch position, the order of assembly or an on-screen compatibility condition may be necessary to understand the demonstration.

Do not invent product instructions from a generated action. Use approved real product documentation to establish what the operation means.

Map available audio space before recording

Create a timeline with narration intervals, meaningful sound effects, quiet gaps and visual events. Mark the moments where description is needed.

Do not treat music as an automatically suitable gap. Music may be lowered when appropriate, but essential speech and meaningful sounds should remain understandable.

For each missing description, estimate the wording needed and compare it with the actual available interval. If the description cannot fit naturally, do not simply accelerate the narration until it becomes difficult to follow.

W3C explains that a separately described video can include pauses or extended intervals when the original soundtrack has insufficient space. That approach changes the duration of the described version while preserving the essential content.

Keep the approved original separate from any revised edit. Extending a shot or holding a frame can create space, but it must not imply that a product mechanism pauses or operates for a different real-world duration.

The decision is an editorial and accessibility-production choice, not an automatic capability of CartVisual or a guarantee that a particular player supports an alternate track.

Hypothetical example: a latch revealed during continuous speech

Hypothetical example; no video was edited, recorded or tested. A fictional storage-case video contains twelve seconds of continuous narration. At seconds five to seven, the picture shows a thumb pressing a small release beneath the handle, but the narration discusses the case's exterior finish.

Candidate A overlays 'The thumb presses the release beneath the handle' directly on top of the existing narration. Two competing spoken messages occupy the same interval.

Candidate B revises the approved narration so that the relevant interval describes the control and action. If the message can be changed without losing essential information, this is the preferred integrated-description plan.

Candidate C preserves the original narration but creates a separately described version with an extended visual hold and sufficient time for the missing sentence.

B is preferred under the fictional assumption that narration is still editable. C remains a valid alternative when the original speech must remain intact. Neither option establishes that the depicted latch operates as shown without authoritative product evidence.

Review the described version as a complete film

After the external edit, listen to the described version without watching it. Can a reviewer identify the release location, the depicted action and the resulting product state?

Then watch the video with the description. Confirm that the spoken explanation matches the visible moment and does not describe an action before it occurs.

For an integrated narration, check whether other necessary claims or instructions were lost during rewriting. For an extended described version, check that added pauses do not create a misleading impression of operating duration.

Verify the destination player's actual support for the selected delivery method. An alternative audio track, separate described video and nearby descriptive transcript are not interchangeable technical features; each requires an appropriate publishing route.

Record the original file version, missing visual information, chosen method, revised timing and final reviewed deliverable. W3C's guidance establishes the available description approaches; the hypothetical timing comparison is an editorial exercise.

If the media changes, revisit the description. A later trim can remove the visual action while leaving its spoken explanation behind.

Record your own observations

The filled rows are illustrative examples. Use the blank row for your own files and observations.

Download the editable CSV worksheet

What the references establish

• W3C WAI — Description of Visual Information: Primary guidance on integrated description, separate described versions and the treatment of videos with insufficient audio space.
• W3C WAI — Making Audio and Video Media Accessible: Explains the roles of captions, transcripts, visual description and media accessibility planning.