Automatic live captions can help when a compatible system transcribes speech, but they may mishear names, accents, overlapping voices and specialist terms. A prepared caption track can include carefully timed speech and relevant sound information. Evaluate the actual result rather than assuming either label guarantees accuracy.
Know which feature is active
An app’s caption selector and an operating system’s live-caption feature are separate controls. Both can be enabled at once, producing duplicate text. Identify which one is showing before changing preferences. System features can also have their own language, processing and privacy behaviour that should be checked in current official documentation.
Use errors as a practical limit
A fast interview, crowd noise or a player’s name can challenge automatic transcription. Treat generated text cautiously where exact wording matters. A prepared track can also contain errors, but it may have been edited for context and sound cues in ways that a real-time speech tool does not reproduce.
Keep access options available
Try the supplied caption or SDH track first when it meets the viewer’s needs, then use a supported live-caption tool as an additional option where useful. Report persistent supplied-track errors with a timestamp. Do not advertise automatic captions as a guaranteed translation or full accessibility service for every programme and language.
