Monitoring Product Videos for Captions and Transcripts
Product videos multiply across a catalogue while captions and transcripts quietly fall behind. How to monitor media accessibility at catalogue scale.
A store can add two hundred product videos in a season, through supplier feeds, influencer clips, and its own shoots. Almost none of that pipeline asks about captions. The result is a catalogue where the most persuasive content is silent for deaf shoppers and unsearchable for everyone else.
Media accessibility is monitorable like any other structural property. This guide covers what to check, how to sample a large catalogue, and how to stop new videos arriving uncaptioned.
Check for caption tracks, not caption buttons
A video player showing a captions button proves nothing: the track behind it may be empty, auto generated and uncorrected, or missing for half the catalogue. Monitoring should inspect the actual caption track for each video and record whether a real, human checked track exists.
Auto captions are a starting point, not a finish. Error rates on product names, sizes, and technical terms are high enough that an uncorrected auto track can misinform a shopper about the product itself.
Sample the catalogue by source
A full manual review of thousands of videos is unrealistic, and unnecessary. Sample by source: supplier feed, agency shoots, user generated clips. Caption quality is consistent within a source, so a sample per source tells you where the pipeline leaks.
Weight the sample toward high traffic products. A missing caption track on a bestseller matters more than the same gap on a delisted line, and monitoring effort should follow shopper impact.
Watch transcripts as a separate asset
Transcripts serve shoppers who cannot use audio or video at all, and they make video content readable to search. Check that each featured video has a transcript on or linked from its page, and that the transcript matches the current edit of the video.
Stale transcripts are their own defect: a re edited video with an old transcript describes scenes and offers that no longer exist. Version checks belong in the same monitoring pass as presence checks.
Gate new videos at upload
Monitoring finds gaps. A gate prevents them. Add caption and transcript checks to the media upload process, so a product video cannot publish without at least a corrected caption track, or a named exception with an owner and a date.
Supplier contracts should carry the same requirement. When caption delivery is written into the feed specification, the catalogue stops depending on someone remembering to ask.
Related reading
If this topic is useful, these earlier guides go deeper on connected questions: Accessibility Monitoring for Multi Brand Store Groups, Monitoring Checkout Steps Without Breaking the Funnel, and Tracking Accessibility Regressions in Weekly Releases.
Frequently asked questions
Is a captions button enough evidence a video is captioned?
No. The button only shows the player supports captions. Monitoring must check the track itself for real content, and spot check its accuracy on product names and key claims.
Are auto generated captions acceptable?
As a draft to correct, yes. Published uncorrected, they misname products and garble terms often enough to mislead. High traffic videos deserve human checked captions first.
How should a large catalogue prioritise caption fixes?
By traffic and by source. Fix bestsellers first, then fix the source pipeline producing uncaptioned video, so the backlog stops growing while it is cleared.
Why monitor transcripts separately from captions?
Because they serve different shoppers and fail independently. A video can have good captions and no transcript, leaving shoppers who cannot use video at all with nothing.