WEBVTT

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How does caption text appear at the right moment?

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A WebVTT track pairs text cues with start and end times for a media player.

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Check the track in the real player.
6 WebVTT checks.

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Start with the right text
Prepare accurate text for the information the track represents.
Accurate wording · Relevant information · Clear text

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Use the expected file structure
A WebVTT file begins with the WEBVTT header and contains timed cues.
WEBVTT header · Timed cues · Text content

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Review cue start and end times
Each cue needs the interval when its text should appear.
Start time · End time · Intended moment

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Attach the track to the player
The website or hosting system needs the actual track connection.
Media player · Track file · Correct connection

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Identify language and purpose
Use suitable language and track labels for the content.
Track language · Useful label · Caption purpose

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Watch with the track enabled
Check timing, readable wording and the player controls.
Track enabled · Matching timing · Usable controls

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Your checklist
Start with the right text · Use the expected file structure · Review cue start and end times · Attach the track to the player · Identify language and purpose · Watch with the track enabled

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Verify the displayed text and timing through the actual published player.
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