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Video Closed Captioning

Synchronized, accurate, audit-ready captions

WCAG requires captions for prerecorded video with audio. We deliver human-reviewed, synchronized closed captions in WebVTT and SRT — for one video or your entire library.

Captions Are a WCAG Requirement, Not a Nice-to-Have

WCAG requires synchronized captions for prerecorded video with audio. Auto-captions with wrong names, missing punctuation, and drifting timing don't pass an audit — and they frustrate every viewer watching on mute. We deliver accurate, synchronized closed captions in the formats your players expect.

00:00:04.000 --> 00:00:07.200
Welcome to the spring product walkthrough.
‍


00:00:07.400 --> 00:00:11.000
Today we're covering the three biggest changes
to the checkout experience.
‍00:00:11.200 --> 00:00:13.600
[upbeat music fades]

Sample formatting — synchronized cues, clean line breaks, and non-speech audio noted.

Frequently Asked Questions

What's the difference between captions, subtitles, and transcripts?

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Captions are synchronized text for viewers who can't hear the audio and include non-speech sounds. Subtitles assume the viewer can hear and usually translate dialogue. Transcripts are standalone text documents. WCAG requires captions for prerecorded video with audio — we can deliver all three.

Do auto-generated captions meet WCAG?

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Generally no. Accuracy, punctuation, speaker changes, and non-speech audio all matter for conformance, and auto-captions routinely fail on each. We machine-draft for speed and human-review for accuracy.

What file formats do you deliver?

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WebVTT and SRT sidecar files as standard — compatible with HTML5 players, YouTube, Vimeo, and most LMS platforms. Burned-in (open) captions are available on request.

Can you caption our whole back catalog?

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Yes — library-scale batches are exactly what this service is built for. Send a representative video and we'll quote the full archive.

How is pricing structured?

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Per-batch, scoped by total runtime and audio complexity. Recurring arrangements are available for teams publishing video on a schedule.